US3351489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable amylose dispersions and method of preparing them
Assignee: FMC Corp
•
Filing: 1964-09-08
•
Granted: 1967-11-07
•
Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Orlando A Battista
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:43
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A COMPOSITION OF MATTER COMPRISING AN ACID HYDROLYZED, FINELY-DIVIDED STARCH MATERIAL CONTAINING AT LEAST A MAJOR PROPORTION OF AMYLOSE, AT LEAST A PORTION OF SAID AMYLOSE HAVING SUBMICRON PARTICLE SIZE, SAID PORTION BEING IN AN AMOUNT SUFFICIENT TO FORM A STABLE DISPERSION.
Claim 2
Dependent Claim
42 words
A COMPOSITION OF MATTER COMPRISING AN ACID HYDROLYZED, FINELY-DIVIDED STARCH MATERIAL CONTAINING AT LEAST A MAJOR PROPORTION OF AMYLOSE, AT LEAST A PORTION OF SAID AMYLOSE HAVING SUBMICRON PARTICLE SIZE, SAID PORTION BEING IN AN AMOUNT SUFFICIENT TO FORM A STABLE DISPERSION.
Claim 3
Independent Claim
75 words
A METHOD OF PREPARING A STARCH MATERIAL, CONTAINING AT LEAST A MAJOR PROPORTION OF AMYLOSE, IN A STABLE DISPERSION WHICH COMPRISES HYDROLYZING THE AMYLOSE IN SAID STARCH MATERIAL WITH A MINERAL ACID TO OBTAIN WATER-INSOLUBLE ATTRITABLE MATERIAL, WASHING THE HYDROLYZED MATERIAL WITH WATER, AND THEN MECHANICALLY ATTRITING SAID MATERIAL BY AGITATING A MIXTURE OF SAID MATERIAL IN AN AQUEOUS MEDIUM TO OBTAIN SUBMICRON PARTICLES OF AMYLOSE IN AN AMOUNT SUFFICIENT TO FORM A STABLE DISPERSION.
Claim 4
Independent Claim
75 words
A METHOD OF PREPARING A STARCH MATERIAL, CONTAINING AT LEAST A MAJOR PROPORTION OF AMYLOSE, IN A STABLE DISPERSION WHICH COMPRISES HYDROLYZING THE AMYLOSE IN SAID STARCH MATERIAL WITH A MINERAL ACID TO OBTAIN WATER-INSOLUBLE ATTRITABLE MATERIAL, WASHING THE HYDROLYZED MATERIAL WITH WATER, AND THEN MECHANICALLY ATTRITING SAID MATERIAL BY AGITATING A MIXTURE OF SAID MATERIAL IN AN AQUEOUS MEDIUM TO OBTAIN SUBMICRON PARTICLES OF AMYLOSE IN AN AMOUNT SUFFICIENT TO FORM A STABLE DISPERSION.
References Cited (Backward Citations)
US3073724A
Cited
US3224903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |