Patent US3141880A successfully refreshed from Google Patents.
US3141880A
Expired / Lapsed
US
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Preparation of tertiaryamino unsaturated ketones
Assignee: Eastman Kodak Co
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Filing: 1961-07-26
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Granted: 1964-07-21
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 James C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:31
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07C; C07C255/00; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/84; C07D213/85; C07D261/00; C07D261/02; C07D261/06; C07D261/08; C07D295/00; C07D295/04; C07D295/10; C07D295/104; C07D295/108; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
THE PROCESS WHICH COMPRISES REACTING AN ENAMINE HAVING THE FORMULA:
Claim 2
Dependent Claim
10 words
THE PROCESS WHICH COMPRISES REACTING AN ENAMINE HAVING THE FORMULA:
Claim 3
Dependent Claim
24 words
THE PROCESS WHICH COMPRISES REACTING KETENE WITH N-ISOBUTENYLMORPHOLINE AT A TEMPERATURE IN THE RANGE OF 10*C. TO 100*C. AND SUFFICIENTLY HIGH TO FORM 4-METHYL1-MORPHOLINO-1-PENTEN-3-ONE.
Claim 4
Dependent Claim
24 words
THE PROCESS WHICH COMPRISES REACTING KETENE WITH N-ISOBUTENYLMORPHOLINE AT A TEMPERATURE IN THE RANGE OF 10*C. TO 100*C. AND SUFFICIENTLY HIGH TO FORM 4-METHYL1-MORPHOLINO-1-PENTEN-3-ONE.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |