Patent US3192206A successfully refreshed from Google Patents.
US3192206A
Expired / Lapsed
US
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4-(omega-aminoalkyl)-3, 3-disubstitutedn-hydrocarbon-2-pyrrolidinones and corresponding-2-thionpyrrolidinones
Assignee: AH Robins Co Inc
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Filing: 1962-11-13
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Granted: 1965-06-29
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Carl D Lunsford
- 👤 Jr Albert D Cale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:14
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/08; C07D207/18; C07D207/22; C07D207/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 4-(OMEGA-MORPHOLINO-ALKYL)-2-PYRROLIDINONES AND -2-THIONPYRROLIDINONES OF THE FORMULA:
Claim 2
Dependent Claim
7 words
A 1-LOWER-ALKYL-3,3-DIPHENYL-4-(B-THIOMORPHOLINO-ETHYL)-2-PYRROLIDONE PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALT.
References Cited (Backward Citations)
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US2075359A
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US2425320A
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US2421729A
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US2606155A
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US3098010A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |