US2750431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 1, 3-trifluorobutadiene, its polymer, and processes of making them and other 1, 1-difluorinated dienes and their polymers
Assignee: Individual
•
Filing: 1953-05-18
•
Granted: 1956-06-12
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Tarrant Paul
- 👤 Alan M Lovelace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:56
CPC Classifications
C; C07; C07C; C07C21/00; C07C21/02; C07C21/19; C07C21/20; C07C17/00; C07C17/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
1 words
1,1,3-TRIFLUORO-BUTADIENE.
Claim 2
Dependent Claim
1 words
1,1,3-TRIFLUORO-BUTADIENE.
Claim 3
Dependent Claim
2 words
POLYMERIC 1,1,3-TRIFLUORO-BUTADIENE.
Claim 4
Dependent Claim
2 words
POLYMERIC 1,1,3-TRIFLUORO-BUTADIENE.
Claim 5
Dependent Claim
31 words
THE PROCESS OF REACTING DIBROMODIFLUOROMETHANE WITH 2-FLUOROPROPYLENE WHEREBY A 1,3-DIBROMINATED 1,1DIFLUORINATED INTERMEDIATE COMPOUND HAVING AN UNSUBSTITUTED METHYL TERMINAL GROUP IS OBTAINED, AND DEHYDROBROMINATING THE INTERMEDIATE COMPOUND THUS OBTAINED TO PRODUCE 1,1,3-TRIFLUORO-BUTADIENE.
Claim 6
Dependent Claim
31 words
THE PROCESS OF REACTING DIBROMODIFLUOROMETHANE WITH 2-FLUOROPROPYLENE WHEREBY A 1,3-DIBROMINATED 1,1DIFLUORINATED INTERMEDIATE COMPOUND HAVING AN UNSUBSTITUTED METHYL TERMINAL GROUP IS OBTAINED, AND DEHYDROBROMINATING THE INTERMEDIATE COMPOUND THUS OBTAINED TO PRODUCE 1,1,3-TRIFLUORO-BUTADIENE.
References Cited (Backward Citations)
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Cited
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Cited
US2581920A
Cited
US2567956A
Cited
US2581925A
Cited
US2647110A
Cited
US2686207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |