US4016300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heating microbial cells
Assignee: Burns Philp Food Inc
•
Filing: 1975-12-04
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Granted: 1977-04-05
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Expires: 1995-12-04
Abstract
Abstract A method for heating microbial cells includes contacting of the cells, which are in a suitable medium forming a dispersion therewith, with heated C 3 -C 8 hydrocarbons at preselected conditions of time, temperature and pressure sufficient for removal of the water. The dewatered cells are then suitably separated from the hydrocarbon heating medium whereby the cells are available for their intended use.
Inventors
- 👤 Philip M. Arnold
- 👤 Emil A. Malick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:37
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/005; Y; Y10; Y10S; Y10S530/00; Y10S530/82; Y10S530/823; Y10S530/824
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
A process for reducing the water content of a dispersion of microorganisms in an aqueous medium, said process comprising the steps of: a. contacting a dispersion of microbial cells in an aqueous medium with a heating medium containing at least one hydrocarbon selected from a group comprising C 3 -C 8 hydrocarbons at a temperature at least about 100° C for a time sufficient to dewater said cells to a water content of less than about 13 percent by weight; and b. separating the heating medium from the microbial cells.
Claim 2
Dependent Claim
90 words
A process for reducing the water content of a dispersion of microorganisms in an aqueous medium, said process comprising the steps of: a. contacting a dispersion of microbial cells in an aqueous medium with a heating medium containing at least one hydrocarbon selected from a group comprising C 3 -C 8 hydrocarbons at a temperature at least about 100° C for a time sufficient to dewater said cells to a water content of less than about 13 percent by weight; and b. separating the heating medium from the microbial cells.
Claim 3
Dependent Claim
19 words
The process as set forth in claim 1 wherein said temperature is between about 100° C and 250° C.
Claim 4
Dependent Claim
19 words
The process as set forth in claim 1 wherein said temperature is between about 150° C and 175° C.
Claim 5
Dependent Claim
22 words
The process as set forth in claim 1 wherein said hydrocarbon is selected from a group comprising C 3 -C 8 alkanes.
Claim 6
Dependent Claim
15 words
The process as set forth in claim 4 wherein the selected said alkane is hexane.
Claim 7
Dependent Claim
25 words
The process as set forth in claim 1 wherein the hydrocarbon is maintained at a pressure sufficient to maintain said hydrocarbon in a liquid state.
Claim 8
Dependent Claim
25 words
The process as set forth in claim 1 wherein said hydrocarbon is maintained at a pressure sufficient to maintain said hydrocarbon in a gaseous state.
Claim 9
Dependent Claim
22 words
The process as set forth in claim 1 wherein said separated heating medium is recovered and recycled for contacting the microbial cells.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |