Patent US1679772A successfully refreshed from Google Patents.
Patent US2729587A successfully refreshed from Google Patents.
US2729587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fructose
Assignee: Individual
•
Filing: 1952-03-11
•
Granted: 1956-01-03
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Expires: 1972-03-11
Abstract
No abstract record available.
Inventors
- 👤 Harold J Koepsell
- 👤 Richard W Jackson
- 👤 Clarence A Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:31
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C12P19/08; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD COMPRISING SUBJECTING AN AQUEOUS SOLUTION OF SUCROSE TO THE ACTION OF A DEXTRAN-PRODUCING ENZYME IN THE SUBSTANTIAL ABSENCE OF LIVING MICROBIAL CELLS, SEPARATING DEXTRAN FROM THE SOLUTION AND SUBSEQUENTLY RECOVERING FRUCTOSE FROM THE SOLUTION.
Claim 2
Independent Claim
36 words
THE METHOD COMPRISING SUBJECTING AN AQUEOUS SOLUTION OF SUCROSE TO THE ACTION OF A DEXTRAN-PRODUCING ENZYME IN THE SUBSTANTIAL ABSENCE OF LIVING MICROBIAL CELLS, SEPARATING DEXTRAN FROM THE SOLUTION AND SUBSEQUENTLY RECOVERING FRUCTOSE FROM THE SOLUTION.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |