US3431133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric coated with binder and pulverulent molecular sieve and process of making same
Assignee: WR Grace and Co
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Filing: 1966-10-12
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Granted: 1969-03-04
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 George L Braude
- 👤 Edwin W Lard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:47
CPC Classifications
D; D06; D06M; D06M16/00; A; A61; A61F; A61F13/00; A61F13/01; A61F13/01008; A61F13/15; A61F13/53; A61F13/534; A61F2013/00089; A61F2013/00217; A61F13/15577; A61F2013/15821; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/53445; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/258; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN ARTICLE OF MANUFACTURE COMPRISING A SELF-SUPPORTING, FLEXIBLE, BREATHABLE, PRTECTIVE, SELF-DECONTAMINATING LAMINATE, SAID LAMINATE HAVING: (A) A SUBSTRATE COMPRISING A FABRIC MADE FROM FIBERS; (B) A FLEXIBLE, BREATHABLE FILM-FORMING POLYMER, SAID FILM BEING IMPREGNATED THROUGH AND BONDED T THE SUBSTRATE, THEREBY TO FORM TWO EXPOSED SURFACES OF SAID FILM, THE SUBSTRATE:FILM WEIGHT RATIO BEING ABOUT 200:1 TO 3:1; (C) AT LEAST ONE COATING COMPRISING AT LEAST ONE MOLECULAR SIEVE, SAID MOLECULAR SIEVE BEING IN PULVERULENT FORM AND HAVING A PORE DIAMETER OF ABOUT 4-10 A. AND A PARTICLE DIAMETER OF ABOUT 3-800 MICRONS, SAID COATING BEING BONDED AT LEAST OT ONE EXPOSED SURFACE OF THE FILM OF POLYMER, THE SUBSTRATE: MOLECULAR SIEVE WEIGHT RATIO BEING ABOUT 50:1 TO 3:1.
Claim 2
Dependent Claim
24 words
THE ARTICLE OF CLAIM 6, SAID ARTICLE HAVING A COATING OF THE PULVERULENT MOLECULAR SIEVE BONDED TO TWO SURFACES OF THE FOLM OF POLYMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |