US3523910A
Expired / Lapsed
US
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Method of use of a 1-t-butyl-3:7-dialkyl phenothiazine as antioxidant and stabilized compositions containing same
Assignee: Novartis Corp
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Filing: 1969-03-17
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Granted: 1970-08-11
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Expires: 1989-03-17
Abstract
No abstract record available.
Inventors
- 👤 Donald Richard Randell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:26
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/30; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/34; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 0
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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) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |