US3576034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon compounds
Assignee: Midland Silicones Ltd
•
Filing: 1969-05-21
•
Granted: 1971-04-20
•
Expires: 1989-05-21
Abstract
Abstract SILANES OF THE FORMULA XC6H4OSIHR''2 WHERE X IS CL OR BR AND R'' IS A MONOVALENT HYDROCARBON RADICAL PREPARED BY REACTING A HALOGENATED PHENOL (XC6H4OH) WITH AN ORGANOSILICON COMPOUND HAVING AN R''2HSI- GROUP PRESENT. THE PRODUCTS ARE USEFUL IN PREPARING POLYMERIC MATERIALS.
Inventors
- 👤 Christopher A Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:43
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |