US3275608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers consisting of 1, 3, 4-oxadiazole rings linked by perfluoroalkylene and optionally, arylene radicals
Assignee: EIDP Inc
•
Filing: 1962-08-06
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Granted: 1966-09-27
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Franklin L Montgomery
- 👤 David C Remy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:09
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C08; C08G; C08G73/00; C08G73/06; C08G73/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS WHICH COMPRISES CONTACTING AND REACTING IN THE PRESENCE OF AN INERT SOLVENT, 0.875 TO 1.125 MOLAR PROPORTIONS OF A BIS-TETRAZOLE OF THE FORMULA
Claim 2
Dependent Claim
25 words
A PROCESS WHICH COMPRISES CONTACTING AND REACTING IN THE PRESENCE OF AN INERT SOLVENT, 0.875 TO 1.125 MOLAR PROPORTIONS OF A BIS-TETRAZOLE OF THE FORMULA
References Cited (Backward Citations)
US2515246A
Cited
GB884973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |