US3825618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable organopolysiloxanes
Assignee: Wacker Chemical Corp
•
Filing: 1970-12-10
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Granted: 1974-07-23
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Expires: 1990-12-10
Abstract
Abstract A CURABLE ORGANOPOLYSILOXANE COMPOSITION COMPRISING A HYDROXYL-TERMINATED ORGANOPOLYSILOXANE, AN ORGANOMETALLIC CATALYST, AND A CURING AGENT CONSISTING OF POLYFUNC- 4 TIONAL SILANES OR SILOXANES HAVING A TERMINAL GROUP SELECTED FROM THE CLASS CONSISTING OF AN OXIRANE, CYANO RADICAL, AND A CARBOXYL RADICAL AND, IF DESIRED, POLYALKOXYSILANES OR POLYALKOXYSILOXANES. THESE ORGANOPOLYSILOXANE COMPOSITIONS WILL RESULT IN A CURED SILICONE RUBBER HAVING IMPROVED ELONGATION, TEAR STRENGTH, AND REDUCED DUROMETER.
Inventors
- 👤 A Pepe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/10; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415; C08L83/04
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |