US2874088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of kallikrein
Assignee: Bayer AG
•
Filing: 1953-08-18
•
Granted: 1959-02-17
•
Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Schultz Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; C12N9/6424; C12N9/6445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE METHOD FOR THE GROUP OF KALLIKREIN FROM A MEMBER SELECTED FROM THE GROUP CONSISTING OF URINE, THERMOLYSATES AND AUTOLYSATES OF PANCREAS, THE IMPROVEMENT WHICH COMPRISES ADDING AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND ZINC TO SAID FIRST MENTIONED GROUP MEMBER TO THEREBY PRECIPITATE AN ADSORBATE AT A PH OF ABOUT 4 TO 7 AND SEPARATING KALLIKREIN FROM SAID ADSORBATE.
Claim 2
Dependent Claim
73 words
IN THE METHOD FOR THE GROUP OF KALLIKREIN FROM A MEMBER SELECTED FROM THE GROUP CONSISTING OF URINE, THERMOLYSATES AND AUTOLYSATES OF PANCREAS, THE IMPROVEMENT WHICH COMPRISES ADDING AN AQUEOUS SOLUTION OF A WATER SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND ZINC TO SAID FIRST MENTIONED GROUP MEMBER TO THEREBY PRECIPITATE AN ADSORBATE AT A PH OF ABOUT 4 TO 7 AND SEPARATING KALLIKREIN FROM SAID ADSORBATE.
References Cited (Backward Citations)
US2174862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |