Patent US3214345A successfully refreshed from Google Patents.
US3214345A
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Process for producing l-aspartic acid
Assignee: Tanabe Pharma Corp
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Filing: 1963-10-18
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Granted: 1965-10-26
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Expires: 1983-10-18
Abstract
No abstract record available.
Inventors
- 👤 Chibata Ichiro
- 👤 Kisumi Masahiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:48
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/828; Y10S435/832; Y10S435/837; Y10S435/848; Y10S435/849; Y10S435/873; Y10S435/874; Y10S435/875; Y10S435/876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A ONE-PHASE PROCESS FOR THE FERMENTATIVE PRODUCTION OF L-ASPARTIC ACID WHICH COMPRISES PRODUCING ASPARTASE BY THE FERMENTATION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ASPARTASE-FORMING STRAINS OF ESCHERICHIA COLI, AEROBACTER AEROGENES, PSEUDOMONAS FLUORESCENS, PSEUDOMONAS AERUGINOSA, PROTEUS VULGARIS AND BACILLUS MEGATHERIUM IN A SUGAR-FREE NUTRIENT MEDIUM CONTAINING FUMARIC ACID AND AMMONIA AT A TEMPERATURE WITHIN THE RANGE FROM 27*C. TO 40*C. AND AT AN INITIAL PH OF 7.0 FOR A PERIOD OF FROM 2 TO 10 DAYS, AND CONCOMITANTLY CONVERTING FUMARIC ACID INTO L-ASPARTIC ACID IN THE SAME FERMENTATION MEDIUM BY THE ACTION THEREON OF THE RESULTANT ASPARTASE, WHEREBY L-ASPARTIC ACID IS SELECTIVELY OBTAINED SUBSTANTIALLY QUANTITATIVELY, AND ISOLATING THE THUS-PRODUCED L-ASPARTIC ACID FROM THE THE FERMENTATION BROTH.
Claim 2
Dependent Claim
118 words
A ONE-PHASE PROCESS FOR THE FERMENTATIVE PRODUCTION OF L-ASPARTIC ACID WHICH COMPRISES PRODUCING ASPARTASE BY THE FERMENTATION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ASPARTASE-FORMING STRAINS OF ESCHERICHIA COLI, AEROBACTER AEROGENES, PSEUDOMONAS FLUORESCENS, PSEUDOMONAS AERUGINOSA, PROTEUS VULGARIS AND BACILLUS MEGATHERIUM IN A SUGAR-FREE NUTRIENT MEDIUM CONTAINING FUMARIC ACID AND AMMONIA AT A TEMPERATURE WITHIN THE RANGE FROM 27*C. TO 40*C. AND AT AN INITIAL PH OF 7.0 FOR A PERIOD OF FROM 2 TO 10 DAYS, AND CONCOMITANTLY CONVERTING FUMARIC ACID INTO L-ASPARTIC ACID IN THE SAME FERMENTATION MEDIUM BY THE ACTION THEREON OF THE RESULTANT ASPARTASE, WHEREBY L-ASPARTIC ACID IS SELECTIVELY OBTAINED SUBSTANTIALLY QUANTITATIVELY, AND ISOLATING THE THUS-PRODUCED L-ASPARTIC ACID FROM THE THE FERMENTATION BROTH.
References Cited (Backward Citations)
US2927059A
Cited
US2971890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |