US3879212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of amylose films
Assignee: Nagase Viita Co Ltd
•
Filing: 1970-11-06
•
Granted: 1975-04-22
•
Expires: 1990-11-06
Abstract
Abstract The present invention relates to a process for the production of various films comprising linear chain amylose of various degrees of polymerization (D.P.), in which amylopectin is absent.
Inventors
- 👤 Mikohiko Yoshida
- 👤 Mamoru Hirao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
47 words
A PROCESS FOR THE PRODUCTION OF AMYLOSE FILMS COMPRISING FORMING SAID FILMS FROM AMYLOPECTIN-FREE AMYLOSE HAVING A CONTENT OF SHORT CHAIN AYLOSE LESS THAN 50% OBTAINED BY HYDROLIZING STARCH ITH A-1,6-GLUCOSIDASE FROM THE SPECIES PESUDOMONAS AMYLODEROMOSA AND WITH THE ADDITION OF A PLASTICIZING AMOUNT OF SUITABLE PLASTICIZER.
Claim 2
Dependent Claim
47 words
A PROCESS FOR THE PRODUCTION OF AMYLOSE FILMS COMPRISING FORMING SAID FILMS FROM AMYLOPECTIN-FREE AMYLOSE HAVING A CONTENT OF SHORT CHAIN AYLOSE LESS THAN 50% OBTAINED BY HYDROLIZING STARCH ITH A-1,6-GLUCOSIDASE FROM THE SPECIES PESUDOMONAS AMYLODEROMOSA AND WITH THE ADDITION OF A PLASTICIZING AMOUNT OF SUITABLE PLASTICIZER.
Claim 3
Dependent Claim
48 words
A process for the production of amylose films comprising forming said films from amylopectin-free amylose having a content of short chain amylose less than 50% obtained by hydrolyzing starch with Alpha -1,6-glucosidase from the species Pseudomonas amyloderomosa and with the addition of a plasticizing amount of suitable plasticizer.
Claim 4
Dependent Claim
48 words
A process for the production of amylose films comprising forming said films from amylopectin-free amylose having a content of short chain amylose less than 50% obtained by hydrolyzing starch with Alpha -1,6-glucosidase from the species Pseudomonas amyloderomosa and with the addition of a plasticizing amount of suitable plasticizer.
Claim 5
Dependent Claim
32 words
A process according to claim 1 wherein the amylose obtained by hydrolyzing starch with Alpha -1,6-glucosidase from the species Pseudomonas amyloderomosa has a content of long chain amylose with D.P. over 100.
Claim 6
Dependent Claim
48 words
A process according to claim 1 wherein to make said amylose, common starch is fractionated into amylose and amylopectin, then both are hydrolyzed with Alpha -1,6-glucosidase from the species Pseudomonas amyloderomosa into amylose and are mixed to control the content of long chain amylose present in the amylose.
Claim 7
Dependent Claim
14 words
A process according to claim 1 wherein said plasticizer is glycerol, propylene-glycol or sorbitol.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |