US4398029B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4398029B1 - - Google Patents
Assignee: Kyorin Pharmaceutical Co Ltd
•
Filing: 1981-02-20
•
Granted: 1990-06-05
•
Expires: 2001-02-20
Abstract
No abstract record available.
Inventors
- 👤 Irikura Tsutomu
- 👤 Suzue Seigo
- 👤 Ito Akira
- 👤 Koga Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:22
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; C07D215/00; C07D215/02; C07D215/16; C07D215/48; C07D215/54; C07D215/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |