US3002889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing l-glutamic acid
Assignee: KH Neochem Co Ltd
•
Filing: 1960-06-20
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Granted: 1961-10-03
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Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Kinoshita Shukuo
- 👤 Tanaka Katsunobu
- 👤 Akita Sadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/14; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/859; Y10S435/861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A METHOD FOR PRODUCING A COMPOUND HAVING AN 1-GLUTAMATE RADICAL FROM CARBOHYDRATE MATERIAL AND NITROGEN SOURCE BY CULTURING AT A PH FROM ABOUT 6 TO ABOUT 9 MICROCOCCUS GLUTAMICUS IN A CULTURE MEDIUM, THE IMPROVEMENT WHEREIN SAID CULTURE MEDIUM CONTAINS FROM ABOUT 1.0 TO ABOUT 5.0Y OF BIOTIN PER LITER.
Claim 2
Dependent Claim
51 words
IN A METHOD FOR PRODUCING A COMPOUND HAVING AN 1-GLUTAMATE RADICAL FROM CARBOHYDRATE MATERIAL AND NITROGEN SOURCE BY CULTURING AT A PH FROM ABOUT 6 TO ABOUT 9 MICROCOCCUS GLUTAMICUS IN A CULTURE MEDIUM, THE IMPROVEMENT WHEREIN SAID CULTURE MEDIUM CONTAINS FROM ABOUT 1.0 TO ABOUT 5.0Y OF BIOTIN PER LITER.
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |