Patent US4816330A successfully refreshed from Google Patents.
US4816330A
Expired / Lapsed
US
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Chemical resistant laminated garment material
Assignee: MSA Safety Inc
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Filing: 1987-08-26
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Granted: 1989-03-28
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Expires: 2007-08-26
Abstract
Abstract A chemical resistant garment material, that is a laminate formed from layers of skived Teflon that have been adhered to a cloth substrate, for use in protective clothing to guard against exposure to toxic agents.
Inventors
- 👤 Paul X. Freund
- 👤 Zane N. Frund, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:04
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A62; A62B; A62B17/00; A62D; A62D5/00; B32B27/32; B32B27/322; B32B27/34; B32B5/00; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/12; D; D06; D06N; D06N3/00; D06N3/04; D06N3/047; B32B2250/00; B32B2250/24; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/0269; B32B2305/00; B32B2305/10; B32B2305/20; B32B2327/00; B32B2327/12; B32B2327/18; B32B2571/00; B32B2571/02; Y; Y10; Y10S; Y10S2/00; Y10S2/901; Y10S2/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/677; Y10T442/681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A laminate material suitable for use in protective clothing comprising: a. a first layer of skived polytetrafluoroethylene; and, b. a second layer bonded through an adhesive layer to said first layer comprising a pliable non-coated cloth substrate.
Claim 2
Dependent Claim
37 words
A laminate material suitable for use in protective clothing comprising: a. a first layer of skived polytetrafluoroethylene; and, b. a second layer bonded through an adhesive layer to said first layer comprising a pliable non-coated cloth substrate.
Claim 3
Dependent Claim
29 words
A laminate material according to claim 1 where said second layer is a spun bonded olefin; a spun bonded one hundred percent nylon 6.6; or, a long chain polyamide.
Claim 4
Dependent Claim
23 words
A laminate material according to claim 1 having a third layer of skived polytetrafluoroethylene bonded to said second layer through an adhesive layer.
Claim 5
Dependent Claim
42 words
Clothing garments for use as protection against chemical exposure made from a laminate material comprising: a. a first layer of skived polytetrafluoroethylene; and, b. a second layer bonded through an adhesive layer to said first layer comprising a pliable non-coated cloth substrate.
Claim 6
Dependent Claim
42 words
Clothing garments for use as protection against chemical exposure made from a laminate material comprising: a. a first layer of skived polytetrafluoroethylene; and, b. a second layer bonded through an adhesive layer to said first layer comprising a pliable non-coated cloth substrate.
Claim 7
Dependent Claim
28 words
Clothing garments according to claim 4 where said second layer is a spun bonded olefin; a spun bonded one hundred percent nylon 6.6; or, a long chain polyamide.
Claim 8
Dependent Claim
22 words
Clothing garment according to claim 4 having a third layer of skived polytetrafluoroethylene bonded to said second layer through an adhesive layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |