Patent US4312525A successfully refreshed from Google Patents.
US2945863A
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Amides of aminoalkyl pyrrolidones
Assignee: GAF Chemicals Corp
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Filing: 1958-06-24
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Granted: 1960-07-19
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Expires: 1978-06-24
Abstract
No abstract record available.
Inventors
- 👤 Saul R Buc
- 👤 Earl P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:51
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405; C10; C10M; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/22; C10N2040/46; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; C10N2070/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S507/00; Y10S507/935; Y10S507/936; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
AMIDES OF AMINOALKYL PYRROLIDONES HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
9 words
AMIDES OF AMINOALKYL PYRROLIDONES HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |