US3661887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing silicone rubber compositions using harada complexes as catalysts
Assignee: Cosan Chemical Corp
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Filing: 1970-05-06
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Granted: 1972-05-09
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Expires: 1990-05-06
Abstract
Abstract IN WHICH EACH OF THE R GROUPS REPRESENT AN ALKYL GROUP CONTAINING 1 TO 8 CARBON ATOMS AND A REPRESENTS A CARBOXYLIC ACID RADICAL CONTAINING 1 TO 22 CARBON ATOMS. (R-)2-SN(-A)2 . (R-)2-SN=O IN A PROCESS FOR CURING SILICONE RUBBER BASED ON ORGANOSILOXANE POLYMERS TO THE SOLID STATE, SIGNIFICANT IMPROVEMENTS ARE ACHIEVED USING AS THE CURING CATALYST A HARADA COMPLEX CHARACTERIZED BY THE EMPIRICAL FORMULA
Inventors
- 👤 John R Leebrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/244; C08G18/246; Y; Y10; Y10S; Y10S528/00; Y10S528/901
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |