US4393219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt of chlorhexidine
Assignee: Maruishi Pharmaceutical Co Ltd
•
Filing: 1981-09-11
•
Granted: 1983-07-12
•
Expires: 2001-09-11
Abstract
Abstract There is provided the novel salt: chlorhexidine di-2-pyrrolidone-5-carboxylate which has potent antibiotic activity and is easily crystallizable.
Inventors
- 👤 Koji Inoue
- 👤 Nobukatsu Sato
- 👤 Takashi Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:16
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07D207/277; C07D207/28; A; A61; A61P; A61P31/00; A61P31/04; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C07C279/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
Chlorhexidine-di-2-pyrrolidone-5-carboxylate.
Claim 2
Dependent Claim
1 words
Chlorhexidine-di-2-pyrrolidone-5-carboxylate.
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) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |