Patent US2947501A successfully refreshed from Google Patents.
Patent US3663351A successfully refreshed from Google Patents.
US3663351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor permeable polyurethane adhesive and finish layers in artificial leather
Assignee: Goodrich Corp
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Filing: 1970-07-24
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Granted: 1972-05-16
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Expires: 1990-07-24
Abstract
Abstract A vapor permeable adhesive based on a combination of polyurethane and water dissolved in tetrahydrofuran (THF) is supplied to adhere the elements of a vapor permeable laminate construction. As a thin top coating on the said laminate the said adhesive dries to form a durable microporous surface finish. A thixotropic viscosity improver added to the polyurethane-waterTHF cement, insures acceptable moisture vapor permeability.
Inventors
- 👤 Walter T Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:13
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; B32B27/00; B32B27/12; B32B27/40; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/12; C08L; C08L75/00; C08L75/04; C08L75/06; C09; C09J; C09J175/00; C09J175/04; C09J175/06; D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2307/00; B32B2307/70; B32B2307/724; C08L2666/00; C08L2666/28; C08L2666/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/378; Y10T442/3813; Y10T442/60; Y10T442/674
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
9 words
a vapor permeable adhesive layer atop said bottom layer,
Claim 2
Dependent Claim
11 words
a vapor permeable polyurethane surface film atop said adhesive layer and,
Claim 3
Dependent Claim
51 words
a vapor permeable adherent surface finish layer atop said surface film wherein said adhesive layer (2) and said finish layer (4) are applied to said substrate (1) and to said surface film (3) respectively as fluid cements comprising in parts by weight Polyurethane 100 Tetrahydrofuran 200-600 Thixotropic viscosity 15-20 improverWater 30-100
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |