US3322772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of carboxylic esters
Assignee: Individual
•
Filing: 1963-12-23
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Granted: 1967-05-30
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Togashi Shigeo
- 👤 Yamada Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/22; C07C69/12; C07C69/14; C07C69/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE PROCESS FOR THE PRODUCTION OF A CARBOXYLIC ACID ESTER BY THE ESTERIFICATION OF A CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS, AROMATIC CARBOXYLIC ACIDS, AND HETEROCYCLIC CARBOXYLIC ACID WITH AN ALCOHOL BY HEATING THE SAID CARBOXYLIC ACID IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF INORGANIC ACID CATALYST, ORGANIC ACID CATALYST AND CATION-EXCHANGE RESIN CATALYST, THE IMPROVEMENT OF ADDING PEROXIDE TO THE REACTION SYSTEM IN A MOLE RATIO OF PEROXIDE TO CARBOXYLIC ACID OF FROM 0.01 TO 0.5:1.
Claim 2
Dependent Claim
92 words
IN THE PROCESS FOR THE PRODUCTION OF A CARBOXYLIC ACID ESTER BY THE ESTERIFICATION OF A CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS, AROMATIC CARBOXYLIC ACIDS, AND HETEROCYCLIC CARBOXYLIC ACID WITH AN ALCOHOL BY HEATING THE SAID CARBOXYLIC ACID IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF INORGANIC ACID CATALYST, ORGANIC ACID CATALYST AND CATION-EXCHANGE RESIN CATALYST, THE IMPROVEMENT OF ADDING PEROXIDE TO THE REACTION SYSTEM IN A MOLE RATIO OF PEROXIDE TO CARBOXYLIC ACID OF FROM 0.01 TO 0.5:1.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |