Patent US3679630A successfully refreshed from Google Patents.
US3679630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions comprising a polyepoxide,a polyisocyanato silane and a catalyst therefor
Assignee: Dow Chemical Co
•
Filing: 1970-12-11
•
Granted: 1972-07-25
•
Expires: 1990-12-11
Abstract
Abstract CURABLE EPOXIDE COMPOSITIONS COMPRISE (A) A POLYEPOXIDE SUCH AS THE DIGLYCIDYL ETHER OF BISPHENOL A, (B) A POLYISOCYANTAOSILANE SUCH AS DIISOCYANATODIPHENYLSILANE AND (C) A CURING CATALYST THEREFOR SUCH AS A PHOSPHONIUM COMPOUND, A QUATERNARY AMMONIUM HALIDE, AN ALKALI METAL HALIDE OR CYANATE, AN ALIPHATIC TERTIARY AMINE, OR A TERTIARY PHOSPHINE.
Inventors
- 👤 Frederick P Corson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:03
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085; C08G18/00; C08G18/003; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/778; C08G59/20; C08G59/32; C08G59/3218; C08G59/4014; C08G59/4028; C08G59/68; C08G59/688
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |