Patent US3767690A successfully refreshed from Google Patents.
US3767690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon cinnamates
Assignee: Dow Silicones Corp
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Filing: 1971-11-22
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Granted: 1973-10-23
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Expires: 1991-11-22
Abstract
Abstract SILANES AND SILOXANES CONTAINING THE GROUP $SIR''S(CH2)3OOCCH=CHC6H5 ARE PREPARED BY THE ADDITION OF ALLYL CINNAMATE TO THE CORRESPONDING MERCAPTO SILANE OR SILOXANE. THE COMPOSITIONS ARE USEFUL AS SUNSCREEN AGENTS IN PROTECTION COATINGS AND IN COSMETIC APPLICATIONS.
Inventors
- 👤 J Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:22
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/0834; C07F7/0892; C07F7/10; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/392
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |