US3425910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cyclodextrin
Assignee: Unilever Bestfoods North America
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Filing: 1966-10-24
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Granted: 1969-02-04
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Armbruster
- 👤 Earl R Kooi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/18; C08; C08B; C08B37/00; C08B37/0006; C08B37/0009; C08B37/0012; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR PREPARING CYCLODEXTRIN FROM A STARCH HYDROLYSATE HAVING A D.E. NOT SUBSTANTIALLY LESS THAN ABOUT 0.5 TO A D.E. NOT EXCEEDING ABOUT 20, WHICH COMPRISES SUBJECTING SAID STARCH HYDROLYSATE TO CONVERSION WITH CYCLODEXTRIN TRANSGLYCOSYLASE IN AN AQUEOUS MEDIUM, TO OBTAIN A CONVERSION PRODUCT CONTAINING CYCLODEXTRIN.
Claim 2
Dependent Claim
47 words
A PROCESS FOR PREPARING CYCLODEXTRIN FROM A STARCH HYDROLYSATE HAVING A D.E. NOT SUBSTANTIALLY LESS THAN ABOUT 0.5 TO A D.E. NOT EXCEEDING ABOUT 20, WHICH COMPRISES SUBJECTING SAID STARCH HYDROLYSATE TO CONVERSION WITH CYCLODEXTRIN TRANSGLYCOSYLASE IN AN AQUEOUS MEDIUM, TO OBTAIN A CONVERSION PRODUCT CONTAINING CYCLODEXTRIN.
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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |