US3555067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha (silylmethyl) sulfides and the corresponding siloxanes
Assignee: Dow Silicones Corp
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Filing: 1968-12-13
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Granted: 1971-01-12
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Expires: 1988-12-13
Abstract
Abstract BIS AND TRIS-ALPHA-SILYL SULFIDES OF THE FORMULA R''-S-C(-R")Y(-SI(-R)3)X WHERE X IS 2 OR 3 AND Y IS 0 OR 1, ARE PREPARED BY THE REACTION R''-S-C(-R")Y(-SI(-R)3)X-LI PLUS R3SICL. WHEN AT LEAST ONE R IS A SILANOL GROUP OR A HYDROLYZABLE GROUP THE CORRESPONDING SILANOL GROUP OR A HYDROLYZABLE GROUP THE CORRESPONDING SIOLOXANES ARE PREPARED BY HYDROLYZING AND/OR CONDENSING SUCH COMPOUNDS. THE COMPOSITIONS ARE USEFUL AS ANTI-OXIDANTS AND AS LUBRICATION ADDITIVES.
Inventors
- 👤 Gary E Le Grow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C07F7/0803; C07F7/081; C07F7/0896
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |