US3076790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making copolymers of amino acids containing glutamic acid
Assignee: Individual
•
Filing: 1958-08-01
•
Granted: 1963-02-05
•
Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
- 👤 Sidney W Fox
- 👤 Harada Kaoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:12
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
METHOD FOR MAKING A POLYPEPTIDE BY HEATING A MIXTURE WHICH CONSISTS OF GLUTAMIC ACID AND AT LEAST ONE OTHER A-AMINO CARBOXYLIC ACID OF THE GROUP CONSISTING OF NEUTRAL AND BASIC AMINO ACIDS AT TEMPERATURES RANGING BETWEEN ABOUT 160* AND ABOUT 210*C. UNTIL A POLYPEPTIDE HAS FORMED.
Claim 2
Dependent Claim
46 words
METHOD FOR MAKING A POLYPEPTIDE BY HEATING A MIXTURE WHICH CONSISTS OF GLUTAMIC ACID AND AT LEAST ONE OTHER A-AMINO CARBOXYLIC ACID OF THE GROUP CONSISTING OF NEUTRAL AND BASIC AMINO ACIDS AT TEMPERATURES RANGING BETWEEN ABOUT 160* AND ABOUT 210*C. UNTIL A POLYPEPTIDE HAS FORMED.
References Cited (Backward Citations)
US2071253A
Cited
US2293388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |