US2676193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2-dibromo-1,3,4,4-tetrachloro-1,2,3,4-tetrafluorobutane
Assignee: Dow Chemical Co
•
Filing: 1952-12-24
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Granted: 1954-04-20
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Expires: 1972-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert P Ruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:18
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C17/00; C07C17/013; C07C17/04; C07C19/00; C07C19/08; C07C19/14; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
1,2 - DIBROMO - 1,3,4,4 - TETRACHOLORO - 1,2,3,4TETRAFLUOROBUTANE.
Claim 2
Dependent Claim
9 words
1,2 - DIBROMO - 1,3,4,4 - TETRACHOLORO - 1,2,3,4TETRAFLUOROBUTANE.
Claim 3
Dependent Claim
20 words
A PROCESS OF PRODUCING 1,2 - DIBROMO 1,3,4,4 - TETRACHLORO - 1,2,3,4 - TETRAFLUOROBUTANE WHICH COMPRISES REACTING BROMINE WITH 1,3,4,4TETRACHLORO-1,2,3,4-TETRAFLUOROBUTENE-1.
Claim 4
Dependent Claim
20 words
A PROCESS OF PRODUCING 1,2 - DIBROMO 1,3,4,4 - TETRACHLORO - 1,2,3,4 - TETRAFLUOROBUTANE WHICH COMPRISES REACTING BROMINE WITH 1,3,4,4TETRACHLORO-1,2,3,4-TETRAFLUOROBUTENE-1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |