US3754031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,n'-bis(3,5-di-t-butyl-4-hydroxyphenyl) adipamide
Assignee: Novartis Corp
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Filing: 1971-03-18
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Granted: 1973-08-21
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Expires: 1991-03-18
Abstract
Abstract HYDROZPHENYL ACYLAMIDE COMPOUNDS HAVING FORMULA ((4-HO,3-R1,R2-PHENYL)-NH-CO)2-CNH2N ARE PREPARED BY REACTING AN ALKYL AMINOPHENOL WITH AN ACYL ORGANIC MATERIALSS WHICH ARE SUBJECT TO OXIDATIVE DETERIORATION.
Inventors
- 👤 M Dexter
- 👤 M Knell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 0
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |