US2614063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalase from red blood cells and whole blood
Assignee: Armour and Co
•
Filing: 1949-01-06
•
Granted: 1952-10-14
•
Expires: 1969-01-06
Abstract
No abstract record available.
Inventors
- 👤 Havard L Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:22
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/0004; C12N9/0065; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/816
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN THE PREPARATION OF CATALASE FROM LIQUID SELECTED FROM THE GROUP CONSISTING OF RED BLOOD CELLS AND WHOLE BLOOD, THE STEPS OF MIXING WITH THE LIQUID CARBON DIOXIDE, ADDING SODIUM ALUMINUM SULPHATE TO PRECIPITATE THE CATALASE, AND SEPARATING THE PRECIPITATE FROM THE LIQUID.
Claim 2
Dependent Claim
43 words
IN THE PREPARATION OF CATALASE FROM LIQUID SELECTED FROM THE GROUP CONSISTING OF RED BLOOD CELLS AND WHOLE BLOOD, THE STEPS OF MIXING WITH THE LIQUID CARBON DIOXIDE, ADDING SODIUM ALUMINUM SULPHATE TO PRECIPITATE THE CATALASE, AND SEPARATING THE PRECIPITATE FROM THE LIQUID.
References Cited (Backward Citations)
US2118117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |