US3092613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of acetylenic compound with alkali-metal borohydride and ni or co salt
Assignee: Wyeth Holdings LLC
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Filing: 1960-07-11
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Granted: 1963-06-04
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 George W Kennerly
- 👤 David S Hoffenberg
- 👤 James S Noland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
C; C08; C08F; C08F38/00; C08F4/00; C08F4/06; C08F4/26; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE METHOD OF POLYMERIZING A POLYMERIZABLE ACETYLENIC COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
12 words
THE METHOD OF POLYMERIZING A POLYMERIZABLE ACETYLENIC COMPOUND HAVING 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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |