US3073856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic silicon compounds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-07-30
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Granted: 1963-01-15
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Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Dodgson Douglas Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:47
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THE METHOD OF PREPARING POLYSILXANES BY HEATING IN DIALKYL FORMAMIDE SOLUTION A HALOSILANE HAVING THE STRUCTURE:
Claim 2
Independent Claim
16 words
THE METHOD OF PREPARING POLYSILXANES BY HEATING IN DIALKYL FORMAMIDE SOLUTION A HALOSILANE HAVING THE STRUCTURE:
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |