US3268508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of kanamycin-nu, nu'-dimethanesulfonic acid
Assignee: Tanabe Pharma Corp
•
Filing: 1960-09-07
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Granted: 1966-08-23
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Expires: 1980-09-07
Abstract
No abstract record available.
Inventors
- 👤 Sugazawa Shigehiko
- 👤 Abe Kyuji
- 👤 Onishi Sadao
- 👤 Umezawa Sumio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:55
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/226; C07H15/234
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A PROCESS FOR ONE-PHASE PRODUCTION OF KANAMYCINN,N''-DIMETHANESULFONIC ACID REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
12 words
A PROCESS FOR ONE-PHASE PRODUCTION OF KANAMYCINN,N''-DIMETHANESULFONIC ACID REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
CA552562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |