Hydroponics Online Store



Hydroponic Systems

Hydroponic Grow Lights & Bulbs

Hydroponic Tents & Grow Boxes

Hydroponic Ballasts

Grow Light Reflectors

Hydroponic Nutrients

Grow Media Rocks

Hydroponic Pumps

Hydroponic Pots

Hydroponic Books

Meters

Hydroponic Exhaust Fans

Hydroponic Seeds

Hydroponic Foggers

Home Store Blog Forums FAQs Lesson Plans Pictures


Search:



US \'204:Reusable Green-Technology Filtration System PATENT FOR SALE. . For Sale


US \'204:Reusable Green-Technology Filtration System PATENT FOR SALE. .
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.



Buy Now

US \'204:Reusable Green-Technology Filtration System PATENT FOR SALE. . :
$35000.00

LOW PRICEOFFER.............

We have been making and selling pool and Hot tub filters, butare just going back to be inventingmore new products.We do not have the expertise

to get these products to the next level. And with this patent allowing limitless applications makes for a great business.

This patent cost over $20,000 dollars alone so if you want to be protected for many many years this is the one.

Please take alook at our response from our happy customers, and email them if you like.

We have sold to every state in the USA and a lot of Canada, so you already have a lot of happy customers.

Buyer is responsible for patenttransfer fees. Once patent is paid for have your patent attorney contact us and we will sign it over asap. The website go\'s with the patent so then have your internet provider transfer it to you.There are maintenance fees that are due and will be up to the buyer.

ezcleanfilter video

Our site

This filter can be made for all applications and shapes and processes . And this kind of filter replaces all Walmart,fleetfarm,kmart, and all theswimming pools in big lotstores and internet.It can be made to last 1 season or many and replaces all there throw away filters and gives the customer a Green reusable cleanable filter. We where invited to Menards but could not supply every store due to cost.

So if you are looking at getting your own product into the big lotsand industrial applications this product can be yours to manufacture 1000\'s of different ways.

Page mill patents has done the report and has put a price tag ofaround amillion dollars for a patent like this, butwe are at our limit on where we can take this . So if your wanting to start your own business with your own products here is your chance.

Patent Report:
US 7,115,204
Two-Stage Wrap Filter The Technology
US 7,115,204 (US ‘204) discloses an efficient and reusable filter system that can be applied in a wide
variety of pumps --from pool pumps to aquariums to air filters to shop vacs . The inventor, from
Sheboygan, Wisconsin, created the filter after he grew tired of buying new filters every few weeks for
his pool pump. His solution was a two-stage filtration system that utilizes a long filter element
wrapped around posts to create a first zone of filtration, and a central tube to create a second zone
of filtration. The granularity of filtration can be easily adjusted by the amount of wraps around the
outer posts or central tube. The filter can be quickly cleaned by removing the wrapped filter element,
cleaning it, and wrapping it back around the central tube and posts. Inventor has been making
and selling this patented filter adapted for pools for seven years.


The Patent
US ‘204 was filed on November 17, 2003 and was approximately issued three years later after a
single office action. A Patent Term Adjustment of 261 days occurred: the patent will expire on
August 4, 2024. The patent consists of 40 claims, five of which are independent. The claims are well
structured and cover myriads of variations of the filter invention, which will make it very difficult for
a would-be infringer to design around. From the Backward Citation analysis (Section V), it is clear
that US ‘204 is wholly unlike any of the prior filtration systems. The patent’s specification gives a
complete disclosure and supports all 40 claims. No limiting estoppel occurred in the patent’s
prosecution history, and the patent has never been licensed, litigated or assigned.


Conclusion
In short, US ‘204 is a strong patent with a long life that covers all variations of two stage wrap filters.


INDEPENDENT CLAIMS

CLAIM 1
A filter comprising:
a. a cartridge comprising:
i. first and second end plates at a predetermined distance apart, at least the
first end plate having a central opening therethrough;
ii. a center tube between the first and second end plates including a wall that
defines at least one hole through; and
iii. a plurality of posts extending between and secured to the end plates;
b. a flexible screen having at least one first wrap around the center tube and at least one
second wrap around the posts; and
c. means for removeably holding the at least one screen second wrap against the posts.
CLAIM 8
Apparatus for filtering a fluid comprising:
a. a cage comprising:
i. a pair of end plates spaced a predetermined distance apart, at least one end plate
having a central opening therethrough; and
ii. at least three posts extending between and secured to the end plates;
b. a center tube captured in the cage and having a wall that defines at least one hole
therethrough;
c. a screen having a first end laid against the center tube and a second end, the screen being
wrapped with at least one first wrap around the center tube and with at least one second
wrap around the posts, the screen second end being alongside the at least one second wrap;
and
d. means for holding the screen at least one second wrap against the posts.

7
CLAIM 15
In combination with a pump having a chamber with an open end and a fluid inlet passage to the
chamber;
a sealing ring removeably sealed to the chamber open end and having an outlet passage;
and means for pumping fluid through the inlet passage to the chamber and out the sealing ring
outlet passage,
a two-sage filter insertable into and removable from the pump chamber comprising:
a. a cartridge comprising a center tube having a foraminous wall, and a plurality of posts each
secured to two spaced apart end plates having respective central openings and cooperating
with the posts to capture the center tube between the end plates and posts;
b. a screen having at least one first wrap around the center tube and at least one second wrap
around the posts; and
c. means for holding the at least one second wrap around the posts, so that a fluid pumped
through the inlet passage to the chamber flows through the filter at least one second wrap,
through the at least one first wrap, and through the center tube wall to the sealing ring outlet
passage.
CLAIM 24
A method of assembling a filter comprising the steps of:
a. providing first and second end plates at a predetermined distance apart;
b. providing multiple posts, said multiple posts extending between and secured to said plates;
c. capturing a foraminous center tube between the end plates and the posts;
d. wrapping the screen with at least one inner wrap around the center tube;
e. wrapping the screen with at least one outer wrap around the posts; and
f. holding the at least one outer wrap against the posts.
CLAIM 33
A method of filtering a liquid comprising the steps of:
a. providing a chamber having a inlet passage and an open end;
8
b. sealing the chamber open end with a sealing ring having an outlet;
c. providing a two-stage filter comprising the steps of;
i. capturing a center tube having a foraminous wall between two end plates each
secured to opposed ends of multiple posts;
ii. wrapping a flexible screen with at least one inner wrap around the center tube;
iii. wrapping the flexible screen with at least one outer wrap around the posts; and
iv. surrounding and holding the at least one outer wrap against the posts;
d. inserting the filter into the chamber; and
e. flowing liquid through the inlet passage to the chamber, through the filter, and out the
sealing ring outlet.


BACKWARD CITATION ANALYSIS


This section reviews all patents that were cited against US ‘204 in prosecution. Each bullet point
gives a short summary of the patent’s disclosure and analysis of the shortcomings of each patent in
regards to US’ 204.
• US 3,486,626 “Replaceable medium, extended area filter unit”
o Summary: A sleeve shaped filter element that attaches to a filter bracket system.
o Lacking: US ‘626 is a single stage filter system, not a two stage. It also does not
disclose a center tube that the filter element is wrapped around, or posts to wrap the
filter around. It uses a sleeve filter, not a wrapping filter. Finally, US ‘626 does not
teach or suggest wrapping a filter element around a center tube and posts to create
an inexpensive but effective reusable two-stage filter.
• US 4,052,317 “Filtering equipment”
o Summary: A filter system that accommodates cylindrical filter elements of different
axial lengths.
o Lacking: US ‘317 is a single stage filter system, not a two stage. It also does not
disclose a center tube with holes or posts to wrap the filter element around. It uses
filter element cartridges, not a wrapping filter. Finally, US ‘317 does not teach or
suggest wrapping a filter element around a center tube and posts to create an
inexpensive but effective reusable two-stage filter.
• US 4,811,559 “Apparatus for removing soot from the exhaust gases of an internal
combustion engine”
o Summary: An electrical soot filter with a wrapped electrode.
o Lacking: US ‘559 is a single stage filter system, not a two stage. It also does not
disclose a center tube and posts to wrap the filter element around; it is a highly
specialized electrical wrap electrode filter. US ‘559 does not teach or suggest
wrapping a filter element around a center tube and posts to create an inexpensive but
effective reusable two-stage filter.
• US 4,848,989 “In-line filter assembly for compressed air”
o Summary: An air filter with two coaxial filter pads.
o Lacking: US ‘989 does not disclose a center tube or posts to wrap the filter element
around. It uses pad filter elements, not wrapping filter elements. Finally, US ‘989
does not teach or suggest wrapping a filter element around a center tube and posts to
create an inexpensive but effective reusable two-stage filter.
• US 4,988,437 “In-line leaf trap”
o Summary: A leaf filter with two filter bags.
o Lacking: US ‘437 does not teach or suggest a center tube to wrap a filter around, or
posts to wrap a filter element around. It uses a bag filter system, not a wrap filter.
Furthermore, US ‘437 does not teach or suggest wrapping a filter element around a
central tube and posts to create an inexpensive but effective reusable two-stage filter.
• US 5,028,323 “Filter for corrosive liquids”
o Summary: A sleeve filter system.
o Lacking: US ‘323 does not disclose a center tube or posts to wrap the filter element
around. It uses sleeve filter elements that are simply inserted and removed. The
system does not teach or suggest a wrapping filter element. Furthermore, it does
10
teach or suggest wrapping a filter element around a central tube and posts to create
an inexpensive but effective reusable two-stage filter.
• US 5,338,446 “Filter unit for in-line use in a pool vacuum hose”
o Summary: A pool filter with a baffle filter.
o Lacking: US ‘446 does not disclose a center tube or posts to wrap the filter element
around. It uses pad filter elements, not wrapping filter elements. Finally, US ‘446
does not teach or suggest wrapping a filter element around a center tube or posts to
create an inexpensive but effective reusable two-stage filter.
• US 6,299,763 “Autogenous bone and cell filter trap”
o Summary: A mesh bone and blood filter.
o Lacking: US ‘763 does not disclose a center tube or posts to wrap the filter element
around. It uses a mesh/bag filter element, not a wrapping filter element. Finally, US
‘763 does not teach or suggest wrapping a filter element around a central tube and
posts to create an inexpensive but effective reusable two-stage filter.
• US 6,555,013 “Treatment method for things like sludge and treatment apparatus”
o Summary: A moving sheet filter that is disposed of by wrapping around posts and
incinerating.
o Lacking: US ‘013 does not disclose a center tube to wrap a filter element around.
The posts ‘013 disclose are used for drying out the filter element so that it may be
incinerated, not for filtration purposes. It uses a single filter element on a tram-like
conveyor system; the system does not create a wrapped filtration system. Finally, US
‘013 does not teach or suggest wrapping a filter element around a central tube and
posts to create an inexpensive but effective reusable two-stage filter.
• US 6,860,394 “Candle filter element”
o Summary: A sheath filtration system.
o Lacking: US ‘394 does not teach or suggest posts to wrap the filter element around.
Its central tube does not support the filter element. The outside “sheath” supports a
non-wrap filter. It uses an axial sheath filter element, not a wrapping filter element.
Finally, US ‘394 does not teach or suggest wrapping a filter element around a central
tube and posts to create an inexpensive but effective reusable two-stage filter.


FORWARD CITATION ANALYSIS
--No forward citations-- PATENT PROSECUTION HISTORY
US ‘204’s prosecution history is absent of limiting estoppel. It was allowed after the first and only
rejection, which was on 35 U.S.C. 112, Second Paragraph (“indefiniteness”) grounds. The rejection
was remedied by a minor amendment and the patent was issued on October 3, 2006. Total
prosecution time was approximately three years, with a Patent Term Adjust of 261 days. The patent
will expire on August 4, 2024.

LITIGATION, LICENSING, AND ASSIGNMENTS
US ‘204 has not been subject to litigation or review. It has never been licensed or assigned.
It is free of encumbrances.



Buy Now


 

Hydroponic Forum Discussions:


Popular Hydroponic Items: