Patent US3492000A successfully refreshed from Google Patents.
Patent US3002978A successfully refreshed from Google Patents.
US3002978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glyceryl pyrrolidone carboxylates
Assignee: Individual
•
Filing: 1959-05-05
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Granted: 1961-10-03
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Expires: 1979-05-05
Abstract
No abstract record available.
Inventors
- 👤 Bocher Gustave Marie Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:54
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07D207/277; C07D207/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF GLYCERYL MONOPYRROLIDONE CARBOXYLATE, GLYCERYL DIPYRROLIDONE CARBOXYLATE, AND GLYCERYL TRIPYRROLIDONE CARBOXYLATE.
Claim 2
Dependent Claim
18 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF GLYCERYL MONOPYRROLIDONE CARBOXYLATE, GLYCERYL DIPYRROLIDONE CARBOXYLATE, AND GLYCERYL TRIPYRROLIDONE CARBOXYLATE.
References Cited (Backward Citations)
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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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |