US2940904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatic process
Assignee: BEN L SARETT
•
Filing: 1957-04-24
•
Granted: 1960-06-14
•
Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Donald W Ohlmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:51
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/0004; C12N9/0006; Y; Y10; Y10S; Y10S435/00; Y10S435/814
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR REMOVING PROTEOLYTIC ENZYMES FROM A GLUCOSE OXIDASE ENZYME SYSTEM CONTAINING THE SAME WHICH COMPRISES THE STEPS OF HEATING AN AQUEOUS DISPERSION OF SAID ENZYME SYSTEM HAVING A PH BETWEEN ABOUT 4 AND ABOUT 8 TO A TEMPERATURE BETWEEN ABOUT 50* AND 80*C. FOR A PERIOD OF TIME SUFFICIENT TO INACTIVATE A SUBSTANTIAL PORTION OF SAID PROTEOLYTIC ENZYME.
Claim 2
Dependent Claim
60 words
A PROCESS FOR REMOVING PROTEOLYTIC ENZYMES FROM A GLUCOSE OXIDASE ENZYME SYSTEM CONTAINING THE SAME WHICH COMPRISES THE STEPS OF HEATING AN AQUEOUS DISPERSION OF SAID ENZYME SYSTEM HAVING A PH BETWEEN ABOUT 4 AND ABOUT 8 TO A TEMPERATURE BETWEEN ABOUT 50* AND 80*C. FOR A PERIOD OF TIME SUFFICIENT TO INACTIVATE A SUBSTANTIAL PORTION OF SAID PROTEOLYTIC ENZYME.
References Cited (Backward Citations)
US2683682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |