US2927941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of fluoro-carbon acids
Assignee: EIDP Inc
•
Filing: 1958-01-10
•
Granted: 1960-03-08
•
Expires: 1978-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jr John Macmillan Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:19
CPC Classifications
C; C07; C07C; C07C53/00; C07C53/15; C07C53/19; C07C53/21; C07C51/00; C07C51/04; C07C51/16; C07C51/31; C07C51/313; C07C51/54; C07C51/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PROCESS FOR THE PREPARATION OF FLUOROCARBON ACID FLUORIDES WHICH COMPRISES HEATING A PERFLUOROOLEFIN HAVING FORMULAS OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
21 words
A PROCESS FOR THE PREPARATION OF FLUOROCARBON ACID FLUORIDES WHICH COMPRISES HEATING A PERFLUOROOLEFIN HAVING FORMULAS OF THE CLASS CONSISTING OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |