Patent US2589294A successfully refreshed from Google Patents.
US2589294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene cyanide polymers and polymer products
Assignee: Goodrich Corp
•
Filing: 1948-02-26
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Granted: 1952-03-18
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Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 Richard F Schmidt
- 👤 Alan E Ardis
- 👤 Gilbert Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:11
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/30; C08F22/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A HOMOPOLYMER OF VINYLIDENE CYANIDE HAVING A MOLECULAR WEIGHT IN EXCESS OF 25,000.
Claim 2
Dependent Claim
13 words
A HOMOPOLYMER OF VINYLIDENE CYANIDE HAVING A MOLECULAR WEIGHT IN EXCESS OF 25,000.
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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |