US3843735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-perfluoroalkyl-1 propenes and process for producing
Assignee: Individual
•
Filing: 1971-09-01
•
Granted: 1974-10-22
•
Expires: 1991-09-01
Abstract
Abstract This invention discloses the preparation of 3-perfluoroalkyl-1propenes with the perfluoroalkyl group containing three to fourteen carbon atoms. These compounds are formed by treatment of D R A W I N G
Inventors
- 👤 M Knell
- 👤 N Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:47
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C07C17/00; C07C17/07; C07C17/087; C07C17/361; C07C17/367; C07C43/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
10 words
A PROCESS FOR THE PREPARATION OF 3-PERFLUOROALKYL-1PROPENE WHICH COMPRISES TREATING
Claim 2
Dependent Claim
10 words
A PROCESS FOR THE PREPARATION OF 3-PERFLUOROALKYL-1PROPENE WHICH COMPRISES TREATING
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein n is an integer from 6 to 12.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein R is lower alkyl.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein R is lower carboxylacyl.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein the reaction is effected in the presence of an acid.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |