Patent US3480635A successfully refreshed from Google Patents.
US3480635A
Expired / Lapsed
US
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N-piperidyl substituted phenylenediamines
Assignee: Universal Oil Products Co
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Filing: 1966-09-28
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Granted: 1969-11-25
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Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Elmar R Altwicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:49
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/40; C07; C07D; C07D211/00; C07D211/02; C07D211/04; C07D211/06; C07D211/36; C07D211/56; C07D211/58; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C09; C09K; C09K15/00; C09K15/04; C09K15/30; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB755667A
Cited
FR1211691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |