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Patent US3120540A successfully refreshed from Google Patents.
US3120540A
Expired / Lapsed
US
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Bis (polymethyl)-4-piperidinol alkanoates
Assignee: Warner Lambert Co LLC
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Filing: 1961-09-25
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Granted: 1964-02-04
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Robert I Meltzer
- 👤 Wilson B Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:53
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
1 words
BIS(1,2,2,6,6-PENTAMETHYL-4-PIPERIDYL)SUCCINATE.
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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |