Patent US2948658A successfully refreshed from Google Patents.
US2948658A
Expired / Lapsed
US
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Process for producing dihydroxy acetone
Assignee: Baxter International Inc
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Filing: 1960-02-25
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Granted: 1960-08-09
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Expires: 1980-02-25
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:23
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/24; C12P7/26; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/823; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD FOR THE PRODUCTION OF DIHYDROXYACETONE BY MICROBIAL FERMENTATION WHICH COMPRISES PREPARING AN INOCULUM BY GROWING ACETOBACTER SUBOXYDANS IN A GROWTH MEDIUM WHICH CONTAINS GLYCEROL AND WHICH HAS A PH OF FROM 5.0 TO 5.9, INTRODUCING THE INOCULUM INTO A FERMENTATION MEDIUM WHICH CONTAINS CORN STEEP LIQUOR AND MORE THAN 6% BY WEIGHT OF GLYCEROL, AND PERMITTING THE FERMENTATION TO PROCEED INTIL THERE HAS BEEN SUBSTANTIAL CONVERSION OF THE GLYCEROL OF DIHYDROXYACETONE.
Claim 2
Independent Claim
73 words
A METHOD FOR THE PRODUCTION OF DIHYDROXYACETONE BY MICROBIAL FERMENTATION WHICH COMPRISES PREPARING AN INOCULUM BY GROWING ACETOBACTER SUBOXYDANS IN A GROWTH MEDIUM WHICH CONTAINS GLYCEROL AND WHICH HAS A PH OF FROM 5.0 TO 5.9, INTRODUCING THE INOCULUM INTO A FERMENTATION MEDIUM WHICH CONTAINS CORN STEEP LIQUOR AND MORE THAN 6% BY WEIGHT OF GLYCEROL, AND PERMITTING THE FERMENTATION TO PROCEED INTIL THERE HAS BEEN SUBSTANTIAL CONVERSION OF THE GLYCEROL OF DIHYDROXYACETONE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |