Patent US2976285A successfully refreshed from Google Patents.
US2976285A
Expired / Lapsed
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Metal chelates and process of preparing same
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-05-09
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Granted: 1961-03-21
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Expires: 1976-05-09
Abstract
No abstract record available.
Inventors
- 👤 Virgil W Gash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:13
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07C; C07C49/00; C07C49/92; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46; C07D409/00; C07D409/02; C07D409/04; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE PREPARATION OF METAL COMPLEXES OF DIKETONES WHICH COMPRISES CONTACTING A B-AMINO A,BOLEFINICALLY UNSATURATED KETONE WITH A METAL SALT OF A CHELATE-FORMING METAL TO PRODUCE A METAL CHELATE OF THE DIKETONE CORRESPONDING TO THE SAID KETONE IN WHICH THE SAID B-AMINO GROUP HAS BEEN REPLACED BY AN OXYGEN ATOM.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE PREPARATION OF METAL COMPLEXES OF DIKETONES WHICH COMPRISES CONTACTING A B-AMINO A,BOLEFINICALLY UNSATURATED KETONE WITH A METAL SALT OF A CHELATE-FORMING METAL TO PRODUCE A METAL CHELATE OF THE DIKETONE CORRESPONDING TO THE SAID KETONE IN WHICH THE SAID B-AMINO GROUP HAS BEEN REPLACED BY AN OXYGEN ATOM.
References Cited (Backward Citations)
US2278965A
Cited
FR1065497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |