US2568658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polymerizing polyunsaturated esters
Assignee: Goodrich Corp
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Filing: 1947-03-12
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Granted: 1951-09-18
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Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Frank B Pope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:16
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C08F18/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE METHOD OF PRODUCING HARD, NON-THERMOPLASTIC, STRAIN-FREE ARTICLES FROM LIQUID POLYUNSATURATED ESTERS OF THE CLASS HAVING THE GENERAL STRUCTURE
Claim 2
Independent Claim
19 words
THE METHOD OF PRODUCING HARD, NON-THERMOPLASTIC, STRAIN-FREE ARTICLES FROM LIQUID POLYUNSATURATED ESTERS OF THE CLASS HAVING THE GENERAL 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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |