US4675228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CPE-PVF laminate for chemical protective clothing
Assignee: Pacific Textiles Inc
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Filing: 1986-04-11
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Granted: 1987-06-23
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Expires: 2006-04-11
Abstract
Abstract Material for chemical protective clothing that is both flexible and capable of withstanding attacks by a wide range of chemicals as well as solvents utilizes a thin film (less than 2 mil) of PVF laminated with a thick sheet (5 to 20 mil) of CPE on one or both sides of the PVF. The PVF provides added protection for chemicals and protects against solvents not protected against by CPE.
Inventors
- 👤 Donald E. Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
A; A62; A62B; A62B17/00; A62D; A62D5/00; B; B32; B32B; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B2307/00; B32B2307/50; B32B2307/58; B32B2307/581; B32B2307/582; B32B2307/5825; B32B2307/70; B32B2307/714; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/60; Y10T442/69
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
Material for chemical protective clothing comprised of a film of PVF less than 2 mils thick laminated with a sheet of CPE 5 to 20 mils thick to be used in manufacturing clothing.
Claim 2
Dependent Claim
33 words
Material for chemical protective clothing comprised of a film of PVF less than 2 mils thick laminated with a sheet of CPE 5 to 20 mils thick to be used in manufacturing clothing.
Claim 3
Dependent Claim
25 words
Material as defined in claim 1 where said film of PVF is 1 mil thick and said sheet of CPE is about 10 mils thick.
References Cited (Backward Citations)
US4518650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |