US2862953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 2-keto-2, 3, 4, 5, 6, 7, 8, 10-octahydronaphthyl-(7)-methane and a process for preparing them
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1953-11-02
•
Granted: 1958-12-02
•
Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Abe Yasuo
- 👤 Harukawa Tadatsugu
- 👤 Ishikawa Hisashi
- 👤 Miki Takuichi
- 👤 Sumi Masao
- 👤 Toga Tadashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:09
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/73; C07C69/738; C07C235/00; C07C235/70; C07C235/72; C07C235/76; C07C235/78; C07C255/00; C07C255/01; C07C255/31; C07C59/00; C07C59/40; C07C59/76; C07C59/80; C07C59/82; C07C67/00; C07C67/30; C07C67/333; C07C67/343; C07C67/347; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND CORRESPONDING TO THE FORMULA
Claim 4
Dependent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND CORRESPONDING TO THE FORMULA
Claim 5
Dependent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
Claim 6
Dependent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
US2678931A
Cited
US2673872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |