US3250807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicarboxylic acids of fluorocarbon ethers and fluorides, esters, amides and salts thereof
Assignee: EIDP Inc
•
Filing: 1963-08-23
•
Granted: 1966-05-10
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Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Fritz Charles Gerhard
- 👤 Moore Earl Phillip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/235; C07C59/305; C07C59/315; C07C51/00; C07C51/58; C07C51/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A FLUOROCARBON ETHER HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A FLUOROCARBON ETHER HAVING THE FORMULA
References Cited (Backward Citations)
CA599948A
Cited
US2839513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |