Patent US3121665A successfully refreshed from Google Patents.
US3121665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-infectious materials from yeast
Assignee: Individual
•
Filing: 1962-05-03
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Granted: 1964-02-18
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Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Ivan A Parfentjev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:28
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/06; C12N1/063
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
THE METHOD OF PRODUCING AN ANTI-INFECTIOUS MATERIAL FROM YEAST WHICH COMPRISES CONTACTING YEAST WITH A MILD ALKALINE SOLUTION A PH OF ABOUT 8 TO 10 FOR AT LEAST ABOUT TWENTY-FOUR HOURS AT AMBIENT TEMPERATURES SO AS TO FORM A SOLUTION CONTAINING EACH ANTI-INFECTIOUS, PROTEINACEOUS MATERIAL, AND SEPARATING THE RESULTING SOLUTION FROM THE REMAINING YEAST SOLIDS.
Claim 2
Independent Claim
55 words
THE METHOD OF PRODUCING AN ANTI-INFECTIOUS MATERIAL FROM YEAST WHICH COMPRISES CONTACTING YEAST WITH A MILD ALKALINE SOLUTION A PH OF ABOUT 8 TO 10 FOR AT LEAST ABOUT TWENTY-FOUR HOURS AT AMBIENT TEMPERATURES SO AS TO FORM A SOLUTION CONTAINING EACH ANTI-INFECTIOUS, PROTEINACEOUS MATERIAL, AND SEPARATING THE RESULTING SOLUTION FROM THE REMAINING YEAST SOLIDS.
Claim 3
Dependent Claim
12 words
THE ANTI-INFECTIOUS MATERIAL PRODUCED IN ACCORDANCE WITH THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
FR979406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |