US2867608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of fluorine containing olefins and permaleic acid and process of preparing same
Assignee: 3M Co
•
Filing: 1954-11-29
•
Granted: 1959-01-06
•
Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Billy F Landrum
- 👤 Jr Ralph L Herbst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
C; C08; C08F; C08F22/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A COPOLYMER OF A POLYMERIZABLE HALOGEN SUBSTITUTED MONOOLEFIN CONTAINING AT LEAST TWO FLUORINE ATOMS AND CONTAINING NO HALOGEN OTHER THAN FLUORINE, CHLORINE AND BROMINE, AND PERMALEIC ACID.
Claim 2
Dependent Claim
27 words
A COPOLYMER OF A POLYMERIZABLE HALOGEN SUBSTITUTED MONOOLEFIN CONTAINING AT LEAST TWO FLUORINE ATOMS AND CONTAINING NO HALOGEN OTHER THAN FLUORINE, CHLORINE AND BROMINE, AND PERMALEIC ACID.
References Cited (Backward Citations)
US2047398A
Cited
US2713042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |