Patent US3745173A successfully refreshed from Google Patents.
US3745173A
Expired / Lapsed
US
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Production of carboxylic acids,esters,acid chlorides,anhydrides,and ketones by reaction of an organometallic compound with carbon monoxide
Assignee: Hercules LLC
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Filing: 1970-07-31
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Granted: 1973-07-10
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Expires: 1990-07-31
Abstract
Abstract AN ORGANOMETHAL COMPOUND OF A PLATINUM GROUP METAL WHERE THE ORGANO GROUP IS ARYL, THIENYL, OR FURYL REACTS WITH CARBON MONOXIDE TO PRODUCE A DIORGANOKETONE AND A CARBOXYLIC COMPOUND WHICH IS AN ACID ANHYDRIDE, AN ACID OR AN ESTER AND THE ORGANOMETAL COMPOUND CAN BE MADE IN SITU FROM THE CORRESPONDING ORGANOMERCURY COMPOUND FOR THIS PURPOSE.
Inventors
- 👤 P Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:51
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0013; C07C; C07C201/00; C07C201/06; C07C201/12; C07C45/00; C07C45/49; C07C45/56; C07C45/57; C07C45/59; C07C51/00; C07C51/10; C07C51/58
Claims Analysis
Total Claims: 0
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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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |