US4372890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum compound
Assignee: Kureha Corp
•
Filing: 1981-05-21
•
Granted: 1983-02-08
•
Expires: 2001-05-21
Abstract
Abstract The present invention relates to a platinum compound having the formula ##STR1## wherein R represents hydrogen atom, an alkali metal atom or a lower alkyl group. The platinum compound is effective as an antitumor and antimicrobial drug.
Inventors
- 👤 Chikao Yoshikumi
- 👤 Takayoshi Fujii
- 👤 Kenichi Saito
- 👤 Masahiko Fujii
- 👤 Koichi Niimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:52
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0086; C07F15/0093; A; A61; A61P; A61P31/00; A61P31/04; A61P35/00; A61P35/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
21 words
A platinum compound having a formula ##STR32## wherein R represents hydrogen atom, an alkali metal atom or a lower alkyl group.
Claim 2
Dependent Claim
21 words
A platinum compound having a formula ##STR32## wherein R represents hydrogen atom, an alkali metal atom or a lower alkyl group.
Claim 3
Dependent Claim
24 words
The platinum compound according to claim 1 wherein said lower alkyl group is selected from the group consisting of methyl, ethyl and propyl group.
Claim 4
Dependent Claim
12 words
The platinum compound according to claim 1 wherein R is methyl group.
Claim 5
Dependent Claim
12 words
The platinum compound according to claim 1 wherein R is hydrogen atom.
Claim 6
Dependent Claim
12 words
The platinum compound according to claim 1 wherein R is sodium atom.
Claim 7
Dependent Claim
12 words
The platinum compound according to claim 1 wherein R is potassium atom.
References Cited (Backward Citations)
US4140707A
Cited
US4140707B1
Cited
US4115418A
Cited
US4203912A
Cited
US4225529A
Cited
US4228090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |