Patent US2676953A successfully refreshed from Google Patents.
US2676953A
Expired / Lapsed
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Method of preparing polymers
Assignee: Solutia Inc
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Filing: 1952-08-27
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Granted: 1954-04-27
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:37
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A METHOD OF PREPARING POLYMERS WHICH COMPRISES BRINGING A POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER IN CONTACT WITH A COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
21 words
A METHOD OF PREPARING POLYMERS WHICH COMPRISES BRINGING A POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER IN CONTACT WITH A COMPOUND HAVING 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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |