US3792011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-cost resinous compositions comprising non-glycidyl ether epoxides
Assignee: Westinghouse Electric Corp
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Filing: 1971-10-14
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Granted: 1974-02-12
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Expires: 1991-10-14
Abstract
Abstract A RESINOUS COMPOSITION, SUITABLE AS A LOW COST POTTING COMPOUND, IS MADE FROM A MIXTURE CONTAINING ABOUT 90 TO 120 PARTS OF A CYCLOALIPHATIC OR ACYLIC ALIPHATIC NONGLYCIDYL ETHER EPOXY RESIN, ABOUT 5 TO 120 PARTS OF A DIGLYCIDYL ETHER EPOXY RESIN, ABOUT 50 TO 200 PARTS OF AN ACID ANHYDRIDE AND ABOUT 0.08 TO 0.9 PART OF A QUATERNARY ORGANIC PHOSPHONIUM SALT ACTING AS A LATENT CATALYST.
Inventors
- 👤 J Smith
- 👤 R Kauffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:02
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/38; C08G59/40; C08G59/42
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |