Patent US2130879A successfully refreshed from Google Patents.
US2965660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of carboxylic acid esters
Assignee: Dehydag Deutsche Hydrierwerke GmbH
•
Filing: 1956-03-27
•
Granted: 1960-12-20
•
Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Heise Rudolf
- 👤 Strauss Wennemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:44
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/36; C07B; C07B31/00; C07C51/00; C07C51/10; C07C51/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
THE PROCESS OF PRODUCING ESTERS OF ORGANIC CARBOXYLIC ACIDS HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
13 words
THE PROCESS OF PRODUCING ESTERS OF ORGANIC CARBOXYLIC ACIDS HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |