US2673828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of polysaccharide-producing enzyme
Assignee: Individual
•
Filing: 1951-03-14
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Granted: 1954-03-30
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Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Harold J Koepsell
- 👤 Allene R Jeanes
- 👤 Eugene S Sharpe
- 👤 Carl A Wilham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:15
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C12P19/08; C12N; C12N9/00; C12N9/10; C12N9/1048; C12N9/1051; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/823; Y10S435/832; Y10S435/853; Y10S435/885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF PRODUCING POLYSACCHARIDEPRODUCING ENZYME COMPRISING CULTURING BACTERIA CAPABLE OF PRODUCING ONE OF THE GROUP CONSISTING OF DEXTRAN, LEVAN, AND MIXTURES THEREOF, IN A NUTRIENT MEDIUM COMPRISING 1/2 TO 2 PERCENT SUCROSE, CONTINUING FERMENTATION UNTIL SUBSTANTIALLY ALL OF THE SUCROSE IS USED UP AND SEPARATING THE BACTERIAL CELLS FROM THE CULTURE MEDIUM.
Claim 2
Independent Claim
53 words
THE METHOD OF PRODUCING POLYSACCHARIDEPRODUCING ENZYME COMPRISING CULTURING BACTERIA CAPABLE OF PRODUCING ONE OF THE GROUP CONSISTING OF DEXTRAN, LEVAN, AND MIXTURES THEREOF, IN A NUTRIENT MEDIUM COMPRISING 1/2 TO 2 PERCENT SUCROSE, CONTINUING FERMENTATION UNTIL SUBSTANTIALLY ALL OF THE SUCROSE IS USED UP AND SEPARATING THE BACTERIAL CELLS FROM THE CULTURE MEDIUM.
References Cited (Backward Citations)
US2392258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |