Patent US2291532A successfully refreshed from Google Patents.
US2988560A
Expired / Lapsed
US
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Preparation of carboxylic acids and salts thereof
Assignee: Universal Oil Products Co
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Filing: 1958-06-02
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Granted: 1961-06-13
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
- 👤 Walter G Toekelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:22
CPC Classifications
C; C07; C07C; C07C53/00; C07C53/126; C07C53/128; C07C51/00; C07C51/347; C07C51/353
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A PROCESS FOR THE PREPARATION OF A SALT OF A CARBOXYLIC ACID WHICH COMPRISES REACTING A MONO-OLEFINIC ALKENE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-SUBSTITUTED ALKALI METAL ORGANOMETALLIC DERIVATIVES OF ALKALI METAL SALTS OF ALKYL CARBOXYLIC ACIDS AND A-SUBSTITUTED ALKALINE EARTH METAL ORGANOMETALLIC DERIVATIVES OF ALKALINE EARTH METAL SALTS OF ALKYL CARBOXYLIC ACIDS AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 300* C., HYDROLYZING THE RESULTANT PRODUCT, AND RECOVERING THE DESIRED SALT OF A CARBOXYLIC ACID.
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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |