US2831889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing glutamic acid
Assignee: OGILIVE FLOUR MILLS CO Ltd
•
Filing: 1954-05-14
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Granted: 1958-04-22
•
Expires: 1974-05-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Gaver
- 👤 Alfred M Barton
- 👤 Allan A Eisenbraun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:01
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/30; A23J3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS OF PRODUCING A GLUTAMIC ACID WHICH COMPRISES EXTRACTING EXTRANEOUS LIPINS FROM GLUTEN BY GRINDING THE GLUTEN TO A FINENESS AT LEAST SMALL ENOUGH TO PASS THROUGH A 35-MESH SCREEN, AND THEN WASHING SAID GROUND GLUTEN WITH A HEATED SUBSTANTIALLY ANHYDROUS ALCHOL SELECTED FROM THE GROUP CONSISTING OF METHYL ALCOHOL, ETHYL ALCOHOL, THE PROPYL ALCOHOLS AND THE BUTYL ALCOHOLS AND FILTERING; HYDROLYZING; AND THEREAFTER SEPARATING THE GLUTAMIC ACID FROM THE HYDROLYZED PRODUCTS OF THE LIPIN EXTRACTED GLUTEN.
Claim 2
Dependent Claim
78 words
A PROCESS OF PRODUCING A GLUTAMIC ACID WHICH COMPRISES EXTRACTING EXTRANEOUS LIPINS FROM GLUTEN BY GRINDING THE GLUTEN TO A FINENESS AT LEAST SMALL ENOUGH TO PASS THROUGH A 35-MESH SCREEN, AND THEN WASHING SAID GROUND GLUTEN WITH A HEATED SUBSTANTIALLY ANHYDROUS ALCHOL SELECTED FROM THE GROUP CONSISTING OF METHYL ALCOHOL, ETHYL ALCOHOL, THE PROPYL ALCOHOLS AND THE BUTYL ALCOHOLS AND FILTERING; HYDROLYZING; AND THEREAFTER SEPARATING THE GLUTAMIC ACID FROM THE HYDROLYZED PRODUCTS OF THE LIPIN EXTRACTED GLUTEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |