US3137720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trimethylsilyl substituted phenols
Assignee: General Electric Co
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Filing: 1961-05-19
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Granted: 1964-06-16
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Glenn D Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415; C08K5/5419; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/18; C07F7/1804; C08G; C08G64/00; C08G64/04; C08G64/06; C08G64/08; C08G64/085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
A TRIMETHYLSILYL COMPOUND SELECTED FROM THE CLASS CONSISTING OF TRIMETHYLSILYL HYDROQUINONE, 4-TRIMETHYLSILYL CATECHOL, AND 2,4,6-TRIS-(TRIMETHYLSILYL)PHENOL.
Claim 2
Dependent Claim
15 words
A TRIMETHYLSILYL COMPOUND SELECTED FROM THE CLASS CONSISTING OF TRIMETHYLSILYL HYDROQUINONE, 4-TRIMETHYLSILYL CATECHOL, AND 2,4,6-TRIS-(TRIMETHYLSILYL)PHENOL.
Claim 3
Dependent Claim
23 words
THE PROCESS FOR MAKING A PHENOL HAVING A NUCLEARLYBONDED --SI(CH3)3 GROUP WHICH COMPRISES REACTING WITH AN ALKALI-METAL ALKOXIDE A COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
23 words
THE PROCESS FOR MAKING A PHENOL HAVING A NUCLEARLYBONDED --SI(CH3)3 GROUP WHICH COMPRISES REACTING WITH AN ALKALI-METAL ALKOXIDE A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |