US3025279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of trifluoroethyl vinyl ether and fluoroalkyl acrylates, and process for preparing same
Assignee: Pennwalt Corp
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Filing: 1955-06-29
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Granted: 1962-03-13
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Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 John T Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:31
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/24; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
COPOLYMERS CONTAINING FROM 1 TO 99 MOL PERCENTS OF 2,2,2-TRIFLUOROETHYL VINYL ETHER ANS 99 TO 1 MOL PERCENT OF A MONOMER REPRESENTED BY THE STRUCTURE
Claim 2
Dependent Claim
25 words
COPOLYMERS CONTAINING FROM 1 TO 99 MOL PERCENTS OF 2,2,2-TRIFLUOROETHYL VINYL ETHER ANS 99 TO 1 MOL PERCENT OF A MONOMER REPRESENTED BY THE 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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |