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US2904601A
Expired / Lapsed
US
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1, 2-dibromo-3-chloro-1, 1, 3, 3-tetrafluoropropane
Assignee: Dow Chemical Co
•
Filing: 1957-01-18
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Granted: 1959-09-15
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Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Edgar M Ilgenfritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:12
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/14; C07C17/00; C07C17/013; C07C17/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
1,2-DIBROMO-3-CHLORO-1,1,3,3,-TERAFLUOROPROPANE.
Claim 2
Dependent Claim
1 words
1,2-DIBROMO-3-CHLORO-1,1,3,3,-TERAFLUOROPROPANE.
References Cited (Backward Citations)
US2676193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |