US2687369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of decarboxylase
Assignee: International Minerals and Chemical Corp
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Filing: 1950-06-07
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Granted: 1954-08-24
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Expires: 1970-06-07
Abstract
No abstract record available.
Inventors
- 👤 Lucile R Hac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/88; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS OF PREPARING HIGHLY ACTIVE GLUTAMIC ACID DECARBOXYLASE WHICH COMPRISES INOCULATING A STERILE AQUEOUS MEDIUM CONTAINING ESSENTIALLLY YEAST EXTRACT, CASEIN HYDROLYSATE, AND DIBASIC POTASSIUM PHOSPHATE WITH ESCHERICHIA COLI, INCUBATING THE SAME FOR SEVERAL HOURS AT A SLIGHTLY SUPERATMOSPHERIC TEMPERATURE, ADDING TO THE INCUBATED MEDIUM STERILE GLUCOSE, CASEIN HYDROYLSATE, AND MONOSODIUM GLUTAMATE, THEN CONTINUING THE INCUBATION FOR A FEW ADDITIONAL HOURS, AND RECOVERING THE DECARBOCYLASE BY SEPARATING THE ORGANISMS FROM THE AQUEOUS MEDIUM.
Claim 2
Dependent Claim
73 words
A PROCESS OF PREPARING HIGHLY ACTIVE GLUTAMIC ACID DECARBOXYLASE WHICH COMPRISES INOCULATING A STERILE AQUEOUS MEDIUM CONTAINING ESSENTIALLLY YEAST EXTRACT, CASEIN HYDROLYSATE, AND DIBASIC POTASSIUM PHOSPHATE WITH ESCHERICHIA COLI, INCUBATING THE SAME FOR SEVERAL HOURS AT A SLIGHTLY SUPERATMOSPHERIC TEMPERATURE, ADDING TO THE INCUBATED MEDIUM STERILE GLUCOSE, CASEIN HYDROYLSATE, AND MONOSODIUM GLUTAMATE, THEN CONTINUING THE INCUBATION FOR A FEW ADDITIONAL HOURS, AND RECOVERING THE DECARBOCYLASE BY SEPARATING THE ORGANISMS FROM THE AQUEOUS MEDIUM.
References Cited (Backward Citations)
US2302079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |