Patent US2928844A successfully refreshed from Google Patents.
US2928844A
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US
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Celesticetin, its salts and method of preparation
Assignee: Pharmacia and Upjohn Co
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Filing: 1958-02-24
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Granted: 1960-03-15
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Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 Boer Clarence De
- 👤 Dietz Alma
- 👤 Hoeksema Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:08
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/14; C07H15/16; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
AN ANTIBIOTIC SUBSTANCE OF THE GROUP CONSISTING OF A NITROGENOUS BASE, CELESTICETIN, AND THE ACID ADDITION SALTS THEREOF, SAID BASE HAVING THE FOLLOWING STRUCTURAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |