US3889006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
An animal feed of high digestibility
Assignee: Morinaga Milk Industry Co Ltd
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Filing: 1973-07-02
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Granted: 1975-06-10
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Expires: 1993-07-02
Abstract
Abstract A microbial proteinous substance useful in manufacturing animal feed can be prepared from a hydrocarbon-assimilating yeast of genus Candida by mutating it to mutants by chemical mutagenic agents or physical mutagenic means, inoculating a suspension containing said mutants on a solid culture medium and incubating to form colonies, selecting mutant strains totally or partially deprived of cell wall integrity from cells of said colonies by means of Gram stain and microscopic inspection, proliferating said mutant strains in a culture medium, and utilizing the proliferated cell mass as raw material.
Inventors
- 👤 Taro Nagasawa
- 👤 Joji Ono
- 👤 Tutomu Kudo
- 👤 Yoshitugu Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:01
CPC Classifications
A; A23; A23K; A23K10/00; A23K10/10; A23K10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
A FOODSTUFF OF HIGH DISESTIBILITY CONTAINING A YEAST MASS OF CELLS OBTAINED BY (1) ALKALINE TREATING (2) PRECIPITATING AND (3) DRYING OF YEAST CELLS WHICH ARE AT LEAST PARTIALLY DEPRIVED OF CELL WALL INTEGRITY AND AT LEAST PARTIALLY DEVIOD OF MANNAN, SAID YEAST CELLS BEING SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON ASSIMILATING MUTANTS OF CANADA MA7002, M75005, M7006, M7007 AND M7010.
Claim 2
Dependent Claim
62 words
A FOODSTUFF OF HIGH DISESTIBILITY CONTAINING A YEAST MASS OF CELLS OBTAINED BY (1) ALKALINE TREATING (2) PRECIPITATING AND (3) DRYING OF YEAST CELLS WHICH ARE AT LEAST PARTIALLY DEPRIVED OF CELL WALL INTEGRITY AND AT LEAST PARTIALLY DEVIOD OF MANNAN, SAID YEAST CELLS BEING SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON ASSIMILATING MUTANTS OF CANADA MA7002, M75005, M7006, M7007 AND M7010.
Claim 3
Dependent Claim
42 words
A foodstuff as claimed in claim 1, said cells being (C2) Gram positive cells of low electron density of the outer region of their walls, the mannan contents of said cells being below 70% of the mannan content of the parent strains.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |