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Patent US3674642A successfully refreshed from Google Patents.
US3674642A
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US
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Novel microbial acidic heteropolysaccharide and production thereof
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1970-05-19
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Granted: 1972-07-04
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Expires: 1990-05-19
Abstract
Abstract METHOD FOR PRODUCING MICROBIAL ACIDIC HETEROPOLYSACCHARIDE, OF WHICH THE SACCHARIDE UNITS CONSIST SUBSTANTIALLY OF GLUCOSE AND MANNOSE AND THE ACID UNITS CONSIST SUBSTANTIALY OF SUCCINIC ACID, LACTIC ACID AND ACETIC ACID, WHICH COMPRISES INCUBATING CORYNEBACTERIUM EQUI VAR. MUCILAGINOSUS IN A CULTURE MEDIUM CONTAINING HYDROCARBON AS THE MAIN CARBON SOURCE TOGETHER WITH DIGESTIBLE NITROGEN SOURCE AND OTHER NUTRIENTS NECESSARY FOR THE GROWTH OF THE MICROORGANISM UNTIL A SUBSTANTIAL AMOUNT OF THE ACIDIC HETEROPOLYSACCHARIDE IS ACCUMULATED IN THE CULTURE BROTH, AND RECOVERING THE ACCUMULATED ACIDIC HETEROPOLYSACCHARIDE THEREFROM.
Inventors
- 👤 Saburo Yamatodani
- 👤 Tsuneo Kanamaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:57
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C09; C09J; C09J105/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/843
Claims Analysis
Total Claims: 0
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |