US3629358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tough unsupported films formed from organopolysiloxanes
Assignee: General Electric Co
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Filing: 1969-07-02
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Granted: 1971-12-21
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Expires: 1989-07-02
Abstract
Abstract SILICONE FILMS HAVING A TENSILE STRENGTH IN EXCESS OF 900 P.S.I. CONTAIN POLYDIORGANOSILOXANE CHAINS HAVING AT LEAST 2500 DIORGANOSILOXY UNITS CROSS-LINKED THROUGH CROSSLINKING POLYSILOXANE BLOCKS CONSISTING OF R3SIO0.5 UNITS AND SIO2 UNITS. THE FILM IS FORMED BY CONDENSING A RESINOUS COPOLYMER OF R3SIO0.5 UNITS AND SIO2 UNITS WITH A SILANOL-TERMINATED POLYDIORGANOSILOXANE CONTAINING AT LEAST 2500 DIORGANOSILOXANE UNITS. THE FILMS OF THE PRESENT INVENTION ARE PARTICULARLY USEFUL IN THE MANUFACTURE OF SURGICAL GLOVES.
Inventors
- 👤 Harry F Lamoreaux
- 👤 Frank J Modic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:12
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/44; C08G77/04; C08G77/06; C08L; C08L83/00; C08L83/04; C08G77/14; C08G77/16
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |