US3000786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making tetrahydro-spiramycin a
Assignee: CIBA PHARM PROD Inc
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Filing: 1958-06-02
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Granted: 1961-09-19
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wettstein Albert
- 👤 Vischer Ernst
- 👤 Bickel Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:14
CPC Classifications
C; C07; C07G; C07G11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
PROCESS FOR THE MANUFACTURE OF A HYDROGENATED ANTIBIOTIC IN UNITARY FORM NAMED TETRAHYDROSPIRAMYCIN A AND SALTS THEREOF, WHEREIN A MEMBER SELECTED FROM THE GROUP CONSISTING OF TETRAHYDROSPIRAMYCIN B, TETRAHYDROSPIRAMYCIN C AND TETRAHYDROSPIRAMYCIN D AND A MIXTURE OF ANY OF TETRAHYDROSPIRAMYCINS A, B, C AND D IS HYDROLYSED WITH AT MOST 1.3 EQUIVALENTS OF A BASIC AGENT.
Claim 2
Dependent Claim
56 words
PROCESS FOR THE MANUFACTURE OF A HYDROGENATED ANTIBIOTIC IN UNITARY FORM NAMED TETRAHYDROSPIRAMYCIN A AND SALTS THEREOF, WHEREIN A MEMBER SELECTED FROM THE GROUP CONSISTING OF TETRAHYDROSPIRAMYCIN B, TETRAHYDROSPIRAMYCIN C AND TETRAHYDROSPIRAMYCIN D AND A MIXTURE OF ANY OF TETRAHYDROSPIRAMYCINS A, B, C AND D IS HYDROLYSED WITH AT MOST 1.3 EQUIVALENTS OF A BASIC AGENT.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |