US2614062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalase
Assignee: Armour and Co
•
Filing: 1948-12-14
•
Granted: 1952-10-14
•
Expires: 1968-12-14
Abstract
No abstract record available.
Inventors
- 👤 Havard L Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
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
53 words
IN A PROCESS FOR PRODUCING CATALASE FROM RED BLOOD CELLS, THE STEPS OF DILUTING CHILLED RED BLOOD CELLS WITH WATER AND BRINGING THE PH THEREOF TO 5.5-4 IN THE PRESENCE OF AN ALUM SOLUTION TO PRECIPITATE A CATALASE PRODUCT WHILE MAINTAINING THE TEMPERATURE OF THE LIQUID BODY IN THE NEIGHBORHOOD OF 40* F.
Claim 2
Dependent Claim
53 words
IN A PROCESS FOR PRODUCING CATALASE FROM RED BLOOD CELLS, THE STEPS OF DILUTING CHILLED RED BLOOD CELLS WITH WATER AND BRINGING THE PH THEREOF TO 5.5-4 IN THE PRESENCE OF AN ALUM SOLUTION TO PRECIPITATE A CATALASE PRODUCT WHILE MAINTAINING THE TEMPERATURE OF THE LIQUID BODY IN THE NEIGHBORHOOD OF 40* F.
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 |