US3074985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of trialkyl vinyl tin compounds
Assignee: Wyeth Holdings LLC
•
Filing: 1961-01-31
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Granted: 1963-01-22
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Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Smolin
- 👤 Michael N O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/04; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A METHOD FOR THE PREPARATION OF A TRIALKYLVINYL TIN COMPOUND WHICH COMPRISES REACTING ACETYLENE WITH A TRIALKYL TIN HYDRIDE OF THE FORMULA:
Claim 2
Independent Claim
22 words
A METHOD FOR THE PREPARATION OF A TRIALKYLVINYL TIN COMPOUND WHICH COMPRISES REACTING ACETYLENE WITH A TRIALKYL TIN HYDRIDE OF THE FORMULA:
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |