US3293260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted cycloheptimidazol-2(1h)-one compounds
Assignee: Sankyo Co Ltd
•
Filing: 1963-09-10
•
Granted: 1966-12-20
•
Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 Sunagawa Genshun
- 👤 Nakao Hideo
- 👤 Nakazawa Junichi
- 👤 Soma Nobuo
- 👤 Sato Yasunobu
- 👤 Watatani Mitsuo
- 👤 Matsumoto Yasuhiro
- 👤 Kobayashi Shinsaku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:08
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |