US3794555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-epoxy laminates for high temperature use
Assignee: Westinghouse Electric Corp
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Filing: 1971-11-16
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Granted: 1974-02-26
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Expires: 1991-11-16
Abstract
Abstract A LAMINATE IS MADE COMPRISING A PLURALITY OF BONDED LAYERS OF SHEET MATERIAL IMPREGNATED WITH A CURED RESINOUS COMPOSITION, COMPRISING A CURED ADMIXTURE OF A LIQUID LOW VISCOSITY EPOXY RESIN, NADIC METHYL ANHYDRIDE AND BENZOPHENONE-TETRACARBOXYLIC DIANHYDRIDE.
Inventors
- 👤 Z Sanjana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:20
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/003; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/244; C08J5/249; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; B29K; B29K2309/00; B29K2309/08; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2262/0284; B32B2262/10; B32B2262/101; B32B2315/00; B32B2315/08; B32B2315/085; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2971; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T442/00; Y10T442/20; Y10T442/2861; Y10T442/2893; Y10T442/291; Y10T442/2926; Y10T442/2992; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3569; Y10T442/3585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |