Patent US4213339A successfully refreshed from Google Patents.
Patent US3847982A successfully refreshed from Google Patents.
US3847982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygenated n-benzoyl-n,2,3,3-tetramethyl-exo-2-norbornanamines
Assignee: Pharmacia and Upjohn Co
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Filing: 1972-11-24
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Granted: 1974-11-12
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Expires: 1992-11-24
Abstract
Abstract 1. A COMPOUND OF THE FORMULA A, B, C OR D: 2-(H3C-N(-R) -),2,3,3-TRI(H3C-),6-R-NORBORANE A 2-(H3C-N(-R)-),2,3,3-TRI(H3C-),7-R2-NORBORANE B 2-(H3C-N(-R)-),2,3,3-TRI(H3C-),6-(O=)-NORBORANE C 2-(H3C-N(-R)-),2,3,3-TRI(H3C-),7-(O=)-NORBORANE D WHEREIN R IS BENZOYL AND R1 AND R2 ARE EACH HYDROXY OR METHOXY.
Inventors
- 👤 M Herr
- 👤 H Murphy
- 👤 G Fonken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:47
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12; C12; C12N; C12N9/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOUND OF THE FORMULA A, B, C OR D:
Claim 2
Dependent Claim
10 words
A COMPOUND OF THE FORMULA A, B, C OR D:
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |