US3845109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxamic acid derivatives of 1-amino-cyclohexanecarboxylic acid
Assignee: Wyeth LLC
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Filing: 1972-05-22
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Granted: 1974-10-29
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Expires: 1992-05-22
Abstract
Abstract 1. A COMPOUND OF THE FOLLOWING FORMULA: 1-R1,2-R2,3-R3,4-R4,5-(H2N-),5-(HO-N(-R5)-CO-),6-R- CYCLOHEXANE WHEREIN: R AND R4 ARE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND LOWER ALKYL; R1, AND R2 AND R3 ARE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, AND LOWER ALKYL, WITH THE PROVISO THAT AT LEAST TWO OF R,R1,R2 R3 AND R4 ARE ALWAYS HYDROGEN; R5 IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND LOWER ALKYL; AND THE SALTS THEREOF WITH PHARMACEUTICALLY ACCEPTABLE ACIDS.
Inventors
- 👤 H Alburn
- 👤 M Lapidus
- 👤 D Clark
- 👤 N Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:33
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |