US3736230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing 6-amino-penicillanic acid
Assignee: Individual
•
Filing: 1971-11-22
•
Granted: 1973-05-29
•
Expires: 1991-11-22
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF HYPOLLAERGENIC 6-AMINOPENICILLANIC ACID BY ENZYMATIC DEGRADATION OF A NATURAL PENICILLIN WITH AN ESCHERICHIA COLI PENICILLIN ACYLASE CHEMICALLY FIXED TO A POLYMERIC SUPPORT.
Inventors
- 👤 P Delin
- 👤 B Ekstrom
- 👤 Westfeld L Nathorst
- 👤 B Sjoberg
- 👤 K Thelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:13
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/21; C07D499/42; C12; C12N; C12N9/00; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/816; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |