US3033758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of levans
Assignee: Schenlabs Pharmaceuticals Inc
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Filing: 1957-11-15
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Granted: 1962-05-08
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Kaufmann Wilfried
- 👤 Bauer Klaus
- 👤 Medick Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/18; Y; Y10; Y10S; Y10S435/00; Y10S435/812; Y10S435/819; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR THE PREPARATION OF LEVANS SUITABLE FOR BLOOD SUBSTITUTAE PURPOSE BY THE INTER-ACTAION OF BACILLUS SUBTILIS AND ENZYMES FORMED BY BACILLUS SUBTILIS, AND CANE SUGAR, IN AQUEOUS NUTRIENT MEDIUM, COMPRISING CARRYING OUT SUCH INTERACTION IN THE PRESENCE IN SAID MEDIUM OF LEVAN SUCRASE-ADSORBING AGENTS IN ORDER TO OBTAIN LEVANS SUITABLE FOR SAID PURPOSES NAND MAINTAINING SAID AGENTS PRESENT IN SAID MEDIUM THROUGHOUT THE FERMENTATION FOR THE PRODUCTION OF SAID LEVANS AS THE PRINCIPAL PRODUCT OF THE FERMENTATION.
Claim 2
Dependent Claim
79 words
A PROCESS FOR THE PREPARATION OF LEVANS SUITABLE FOR BLOOD SUBSTITUTAE PURPOSE BY THE INTER-ACTAION OF BACILLUS SUBTILIS AND ENZYMES FORMED BY BACILLUS SUBTILIS, AND CANE SUGAR, IN AQUEOUS NUTRIENT MEDIUM, COMPRISING CARRYING OUT SUCH INTERACTION IN THE PRESENCE IN SAID MEDIUM OF LEVAN SUCRASE-ADSORBING AGENTS IN ORDER TO OBTAIN LEVANS SUITABLE FOR SAID PURPOSES NAND MAINTAINING SAID AGENTS PRESENT IN SAID MEDIUM THROUGHOUT THE FERMENTATION FOR THE PRODUCTION OF SAID LEVANS AS THE PRINCIPAL PRODUCT OF THE FERMENTATION.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |