US2999878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of beta-hydroxy-alpha-amino acid
Assignee: Ajinomoto Co Inc
•
Filing: 1957-06-05
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Granted: 1961-09-12
•
Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Okawa Kenji
- 👤 Sato Mikio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/14; C07C227/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE SYNTHESIS OF B-HYDROXY-A-AMINO ACID SELECTED FROM THE GROUP CONSISTING OF SERINE, THREONINE AND PHENYLSERINE COMPRISING REACTING AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE AND BENZALDEHYDE IN AN ALKALINE AQUEOUS MEDIUM WITH COPPER SALT OF GLYCINE TO PRODUCE A CHELATED CONDENSATION PRODUCT HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE SYNTHESIS OF B-HYDROXY-A-AMINO ACID SELECTED FROM THE GROUP CONSISTING OF SERINE, THREONINE AND PHENYLSERINE COMPRISING REACTING AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE AND BENZALDEHYDE IN AN ALKALINE AQUEOUS MEDIUM WITH COPPER SALT OF GLYCINE TO PRODUCE A CHELATED CONDENSATION PRODUCT HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2737526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |