US3411989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing yeast cells containing an enhanced amount of ribonucleic acid
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1966-09-01
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Granted: 1968-11-19
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Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Nakao Yoshio
- 👤 Banno Isao
- 👤 Kuno Mitsuzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/26; C12N1/28; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/30; C12P19/34; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PREPARING YEAST CELLS CONTAINING AN ENHANCED AMOUNT OF RIBONUCLEIC ACID, WHICH COMPRISES INOCULATING A MUTANT OF THE GENUS CANDIDA WHICH IS RESISTANT TO A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THIAZINE DYE, OXAZINE DYE AND ACRIDINE DYE, ONTO A NUTRIENT CULTURE MEDIUM COMPRISING CARBON SOURCE CONSISTING MAINLY OF HYDROCARBONS CONTAINING NOT LESS THAN 10% (VOLUME/VOLUME) OR NORMAL PARAFFINS HAVING A CARBON ATOM NUMBER WITHIN THE RANGE FROM 14 TO 21, AND INCUBATING THE CULTURE MEDIUM AT A TEMPERATURE OF ABOUT 20*C. TO ABOUT 40*C. AND AT A PH VALUE OF ABOUT 4.0 TO ABOUT 8.0 UNJER AEROBIC CONDITIONS.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PREPARING YEAST CELLS CONTAINING AN ENHANCED AMOUNT OF RIBONUCLEIC ACID, WHICH COMPRISES INOCULATING A MUTANT OF THE GENUS CANDIDA WHICH IS RESISTANT TO A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THIAZINE DYE, OXAZINE DYE AND ACRIDINE DYE, ONTO A NUTRIENT CULTURE MEDIUM COMPRISING CARBON SOURCE CONSISTING MAINLY OF HYDROCARBONS CONTAINING NOT LESS THAN 10% (VOLUME/VOLUME) OR NORMAL PARAFFINS HAVING A CARBON ATOM NUMBER WITHIN THE RANGE FROM 14 TO 21, AND INCUBATING THE CULTURE MEDIUM AT A TEMPERATURE OF ABOUT 20*C. TO ABOUT 40*C. AND AT A PH VALUE OF ABOUT 4.0 TO ABOUT 8.0 UNJER AEROBIC CONDITIONS.
References Cited (Backward Citations)
US3272714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |