Patent US2897237A successfully refreshed from Google Patents.
US2897237A
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Substituted tetrahydronaphthalenes
Assignee: Givaudan Roure Corp
•
Filing: 1953-12-14
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Granted: 1959-07-28
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Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Marion S Carpenter
- 👤 Jr William M Easter
- 👤 Thomas F Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:34
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0042; C11B9/0046; C11B9/0049; C11B9/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
6- LOWER- ALKYL - SUBSTITUTED, 7-ACETYL- 1,1,4,4TETRAMETHYL-1, 2, 3, 4-TETRAHYDRONAPHTHALENES.
Claim 2
Dependent Claim
10 words
6- LOWER- ALKYL - SUBSTITUTED, 7-ACETYL- 1,1,4,4TETRAMETHYL-1, 2, 3, 4-TETRAHYDRONAPHTHALENES.
References Cited (Backward Citations)
US2588123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |