US5433764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable filter assembly
Assignee: Molecucare Inc
•
Filing: 1993-11-23
•
Granted: 1995-07-18
•
Expires: 2013-11-23
Abstract
Abstract A filter consisting of a conventional filter medium mounted between retaining layers of a porous fabric cut to fit the shape of the opening in the mechanism in which it is to be mounted. A tab extends from one edge of the filter. Around the outer periphery of one of the retaining layers is a layer of adhesive which is, in turn, covered by a protective layer of paper, cardboard or the like. Upon removal of the protective layer, the filter is held in place by the layer of adhesive against its mounting. The protective paper is left on a portion of the tab, thereby, reinforcing the tab and allows it to remain free to manipulate the filter assembly during installation and removal.
Inventors
- 👤 Arthur L. Matschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:12
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
A filter comprising a filter member having a layer of adhesive around the outer edge of a side of the filter member and a layer of protective material which is treated to only lightly adhere to said adhesive having a tab which extends from one edge of the filter member, said protective layer being cut so as to allow the protective layer to remain on the tab when the protective layer is removed from the rest of the filter member.
Claim 2
Dependent Claim
80 words
A filter comprising a filter member having a layer of adhesive around the outer edge of a side of the filter member and a layer of protective material which is treated to only lightly adhere to said adhesive having a tab which extends from one edge of the filter member, said protective layer being cut so as to allow the protective layer to remain on the tab when the protective layer is removed from the rest of the filter member.
Claim 3
Dependent Claim
15 words
A filter as claimed in claim 1 wherein the filter member is substantially circular shaped.
Claim 4
Dependent Claim
25 words
The filter as claimed in claim 1 where the filter member consists of a layer of filter material and surrounding layers of porous cover material.
Claim 5
Dependent Claim
26 words
A filter as claimed in claim 3 wherein a stiffening ring is placed around the outer edge of one of the layers of porous cover material.
References Cited (Backward Citations)
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US2142064A
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US2557279A
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US3122197A
Cited
US3458130A
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US3831759A
Cited
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Cited
US4410341A
Cited
US5227074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |