US2741577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological oxidation of idonic acid to 2-keto-1-gulonic acid
Assignee: Pfizer Inc
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Filing: 1954-04-26
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Granted: 1956-04-10
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Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Richard N Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/40; C12P7/58; C12P7/60; C07; C07H; C07H7/00; C07H7/02; C07H7/027; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/859
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR PREPARING 2-KETO-1-GULONIC ACID, WHICH PROCESS COMPRISES SUBJECTING TO THE OXIDIZING SYSTEM PRODUCED BY CULTIVATING MICROCOCCUS AURANTIACUS UNDER AEROBIC CONDITIONS ON AN OTHERWISE STERILE, NUTRIENT MEDIUM, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-IDONIC ACID AND THE NON-TOXIC IDONATES.
Claim 2
Dependent Claim
42 words
A PROCESS FOR PREPARING 2-KETO-1-GULONIC ACID, WHICH PROCESS COMPRISES SUBJECTING TO THE OXIDIZING SYSTEM PRODUCED BY CULTIVATING MICROCOCCUS AURANTIACUS UNDER AEROBIC CONDITIONS ON AN OTHERWISE STERILE, NUTRIENT MEDIUM, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-IDONIC ACID AND THE NON-TOXIC IDONATES.
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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |