US2565487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of esters
Assignee: Individual
•
Filing: 1948-12-27
•
Granted: 1951-08-28
•
Expires: 1968-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edward M Filachione
- 👤 Charles H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:55
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS OF PRODUCING AN ESTER COMPRISING REACTING A BASIC NITROGEN SALT OF AN ORGANIC CARBOXYLIC ACID, IN WHICH THE NITROGEN OF THE SALT HAS A VALENCE OF 5, WITH AN ALCOHOL, TO PRODUCE AN ESTER OF THE ORGANIC CARBOXYLIC ACID HAVING AN ESTER GROUP CORRESPONDING TO THAT OF THE ALCOHOL.
Claim 2
Dependent Claim
51 words
A PROCESS OF PRODUCING AN ESTER COMPRISING REACTING A BASIC NITROGEN SALT OF AN ORGANIC CARBOXYLIC ACID, IN WHICH THE NITROGEN OF THE SALT HAS A VALENCE OF 5, WITH AN ALCOHOL, TO PRODUCE AN ESTER OF THE ORGANIC CARBOXYLIC ACID HAVING AN ESTER GROUP CORRESPONDING TO THAT OF THE ALCOHOL.
References Cited (Backward Citations)
US1421605A
Cited
GB256587A
Cited
US2001926A
Cited
US2155625A
Cited
US2173124A
Cited
US2406648A
Cited
US2434300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |