Patent AT64309B successfully refreshed from Google Patents.
Patent AT143166B successfully refreshed from Google Patents.
Patent US2804484A successfully refreshed from Google Patents.
US2804484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroolefins and process for their preparation
Assignee: Research Corp
•
Filing: 1953-04-16
•
Granted: 1957-08-27
•
Expires: 1973-04-16
Abstract
No abstract record available.
Inventors
- 👤 Tarrant Paul
- 👤 Dale A Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:42
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/2632
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD OF MAKING FLUOROOLEFINES WHICH COMPRISES REACTING A PERHALOGENATED OLEFIN IN WHICH AT LEAST A PORTION OF THE HALOGENS ARE FLUORINE WITH A GRIGNARD REAGENT OF THE GROUP CONSISTING OF ALKYL AND ARYL GRIGNARD REAGENTS WHEREBY ONE OF THE HALOGENS IS REPLACED BY THE ORGANIC RADICAL OF THE GRIGNARD REAGENT.
Claim 2
Independent Claim
51 words
THE METHOD OF MAKING FLUOROOLEFINES WHICH COMPRISES REACTING A PERHALOGENATED OLEFIN IN WHICH AT LEAST A PORTION OF THE HALOGENS ARE FLUORINE WITH A GRIGNARD REAGENT OF THE GROUP CONSISTING OF ALKYL AND ARYL GRIGNARD REAGENTS WHEREBY ONE OF THE HALOGENS IS REPLACED BY THE ORGANIC RADICAL OF THE GRIGNARD REAGENT.
References Cited (Backward Citations)
US2580504A
Cited
US2475423A
Cited
US2651627A
Cited
US2691036A
Cited
US2668864A
Cited
US2676193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |