US2871222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts for glycidyl polyethers and products produced thereby
Assignee: Westinghouse Electric Corp
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Filing: 1957-04-18
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Granted: 1959-01-27
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arnold B Finestone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:29
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4078; C08G59/68; C08G59/70; H01B3/308
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOSITION OF MATTER COMPRISING (1) A REACTIVE RESINOUS GLYCISYL POLYETHER DERIVED FROM A DIHYDRIC PHENOL AND AN EPIHALOHYDRIN, SAID POLYETHER HAVING AN EPOXY EQUIVALENCY OF GREATER THAN 1, AND (2) A CURING CATALYST THEREFOR COMPRISING A MIXTURE OF A (A) FROM 2% TO 20% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYETHER, OF A LEAST ONE BORONATE ESTER HAVING THE FORMULA
Claim 2
Dependent Claim
63 words
A COMPOSITION OF MATTER COMPRISING (1) A REACTIVE RESINOUS GLYCISYL POLYETHER DERIVED FROM A DIHYDRIC PHENOL AND AN EPIHALOHYDRIN, SAID POLYETHER HAVING AN EPOXY EQUIVALENCY OF GREATER THAN 1, AND (2) A CURING CATALYST THEREFOR COMPRISING A MIXTURE OF A (A) FROM 2% TO 20% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYETHER, OF A LEAST ONE BORONATE ESTER HAVING THE FORMULA
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |