US2703328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rearrangement products of mycomycin
Assignee: Pfizer Inc
•
Filing: 1951-08-04
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Granted: 1955-03-01
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Expires: 1971-08-04
Abstract
No abstract record available.
Inventors
- 👤 Walter D Celmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:40
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
PROCESS FOR PREPARING A BIOLOGICALLY ACTIVE COMPOUND WHICH COMPRISES CONTACTING MYCOMYCIN AT A TEMPERATURE FROM ABOUT 15* C. TO ABOUT 30* C. WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI.
Claim 2
Dependent Claim
30 words
PROCESS FOR PREPARING A BIOLOGICALLY ACTIVE COMPOUND WHICH COMPRISES CONTACTING MYCOMYCIN AT A TEMPERATURE FROM ABOUT 15* C. TO ABOUT 30* C. WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI.
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) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |