US3792072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silylating agent
Assignee: Wacker Chemical Corp
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Filing: 1971-12-30
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Granted: 1974-02-12
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Expires: 1991-12-30
Abstract
Abstract A SILYLATING AGENT IS DESCRIBED WHICH COMPRISES A DISILAZANE AND AN ACYLOXYSILANE, AND A METHOD FOR CONVERTING SILANOLS AND SILOXANOLS TO THEIR TRIMETHYLSILYL DERIVATIVES.
Inventors
- 👤 R Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1896; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874; C07F7/10
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |