Patent US6451595B1 successfully refreshed from Google Patents.
US3215641A
Expired / Lapsed
US
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Phenol derivative
Assignee: Shell USA Inc
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Filing: 1962-11-13
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Granted: 1965-11-02
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Albert L Rocklin
- 👤 Paul H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2050/00; C10N2050/10; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
THE COMPOSITION CONSISTING ESSENTIALLY OF A HYROCARBON LUBRICATING OIL NORMALLY SUBJECT TO OXIDATIVE DETERIORATION CONTAINING A STABILIZING AMOUNT OF THE BENZOTHIAZOLE COMPOUND HAVING THE STRUCTURE
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |