US3167485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water insoluble modified enzymes
Assignee: Individual
•
Filing: 1961-05-23
•
Granted: 1965-01-26
•
Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Katchalski Efraim
- 👤 Bar-Eli Estelle Atara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02; C12N11/10; C12N11/12; C12N11/08; C12N11/089; C12N11/091; Y; Y10; Y10S; Y10S530/00; Y10S530/81; Y10S530/812; Y10S530/813; Y10S530/814; Y10S530/815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN ENZYMATICALLY ACTIVE, WATER-INSOLUBLE SUBSTANCE, COMPRISING PAPAIN BONDED COVALENTLY TO A WATER-INSOLUBLE COPOLYMER OF L-LEUCINE AND P-AMINO PHENYL-DL-ALANINE.
Claim 2
Dependent Claim
18 words
AN ENZYMATICALLY ACTIVE, WATER-INSOLUBLE SUBSTANCE, COMPRISING PAPAIN BONDED COVALENTLY TO A WATER-INSOLUBLE COPOLYMER OF L-LEUCINE AND P-AMINO PHENYL-DL-ALANINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |