US2768174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing vinyl ether derivatives
Assignee: Rhone Poulenc SA
•
Filing: 1956-02-23
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Granted: 1956-10-23
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Paul Raymond Etienne
- 👤 Tchelitcheff Serge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:01
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58; C07C51/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A PROCESS FOR THE PRODUCTION OF VINYL ETHER DERIVATIVES WHICH COMPRISES TREATING WITH PHOSGENE A VINYL ETHER OF THE GENERAL FORMULA
Claim 2
Dependent Claim
21 words
A PROCESS FOR THE PRODUCTION OF VINYL ETHER DERIVATIVES WHICH COMPRISES TREATING WITH PHOSGENE A VINYL ETHER OF THE GENERAL FORMULA
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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |