US3053872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing bis-silylarylene compounds
Assignee: Union Carbide Corp
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Filing: 1957-12-30
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Granted: 1962-09-11
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 George M Omietanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/0834; C07F7/0836; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08G77/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING BIS-SILYLPHENYLENE COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING BIS-SILYLPHENYLENE COMPOUNDS OF THE GENERAL 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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |