US4283496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of glucose isomerase
Assignee: RJ Reynolds Tobacco Co
•
Filing: 1977-09-19
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Granted: 1981-08-11
•
Expires: 1997-09-19
Abstract
Abstract Glucose is converted to fructose in the presence of an enzyme produced by Flavobacterium arborescens.
Inventors
- 👤 Chin K. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:38
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12N9/00; C12N9/90; C12N9/92; C12R; C12R2001/00; C12R2001/01; C12R2001/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/85
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A biologically pure culture of a mutant strain of the microorganism Flavobacterium arborescens having the identifying characteristics of Flavobacterium arborescens ATCC 4358, said strain being capable of producing substantial quantities of glucose isomerase activity when cultivated in a nutrient medium containing sources of carbon, nitrogen and inorganic salts with lactose as the sole carbon source.
Claim 2
Dependent Claim
55 words
A biologically pure culture of a mutant strain of the microorganism Flavobacterium arborescens having the identifying characteristics of Flavobacterium arborescens ATCC 4358, said strain being capable of producing substantial quantities of glucose isomerase activity when cultivated in a nutrient medium containing sources of carbon, nitrogen and inorganic salts with lactose as the sole carbon source.
Claim 3
Dependent Claim
15 words
A culture according to claim 1 which has been assigned depository identifying number NRRL B-11,022.
Claim 4
Dependent Claim
15 words
A culture according to claim 1 which has been assigned depository identifying number NRRL B-11,023.
References Cited (Backward Citations)
US3979261A
Cited
US3956066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |