US3960834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing 3-(methylmercaptol) propylaminobleomycin
Assignee: Microbial Chemistry Research Foundation
•
Filing: 1973-11-02
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Granted: 1976-06-01
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Expires: 1993-11-02
Abstract
Abstract By thermal decomposition of 3-(S,S-dimethylmercapto)propylaminobleomycin, there is easily obtained 3-(methylmercapto)propylaminobleomycin which is a useful antibiotic substance having an extremely high antimicrobial activity and a carcinostartic activity with low toxicity.
Inventors
- 👤 Hamao Umezawa
- 👤 Tomohisa Takita
- 👤 Akio Fujii
- 👤 Hiroko Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:23
CPC Classifications
C; C07; C07K; C07K9/00; C07K9/001; C07K9/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
1 words
3-(Methylmercapto)propylaminobleomycin.
Claim 2
Dependent Claim
1 words
3-(Methylmercapto)propylaminobleomycin.
Claim 3
Dependent Claim
5 words
3-(Methylmercapto)propylaminobleomycin having copper contained therein.
Claim 4
Dependent Claim
5 words
3-(Methylmercapto)propylaminobleomycin having copper contained therein.
Claim 5
Dependent Claim
5 words
The copper-containing hydrochloride of 3-(methylmercapto)propylaminobleomycin.
Claim 6
Dependent Claim
5 words
The copper-containing hydrochloride of 3-(methylmercapto)propylaminobleomycin.
Claim 7
Dependent Claim
3 words
Copper free 3-(methylmercapto)propylaminobleomycin.
Claim 8
Dependent Claim
3 words
Copper free 3-(methylmercapto)propylaminobleomycin.
References Cited (Backward Citations)
US3846400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |