US2989425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hydrolysis of starch
Assignee: Alfa Laval Holdings Amsterdam AB
•
Filing: 1958-11-18
•
Granted: 1961-06-20
•
Expires: 1978-11-18
Abstract
No abstract record available.
Inventors
- 👤 Bierke Svante
- 👤 Mautner Mihajlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
C; C13; C13K; C13K1/00; C13K1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN THE HYDROLYSIS OF STARCH IN AN ACID WATER SUSPENSION, THE METHOD WHICH COMPRISES FLOWING THE SUSPENSION THROUGH A ROTATING CHAMBER WHILE MAINTAINING THE SUSPENSION IN THE FORM OF A FILM UNDER THE ACTION OF CENTRIFUGAL FORCE IN THE ROTATING CHAMBER, AND SIMULTANEOUSLY APPLYING HEAT TO SAID FILM OF STARCH IN SAID CHAMBER BY WAY OF THE OUTER WALL OF THE CHAMBER.
Claim 2
Dependent Claim
62 words
IN THE HYDROLYSIS OF STARCH IN AN ACID WATER SUSPENSION, THE METHOD WHICH COMPRISES FLOWING THE SUSPENSION THROUGH A ROTATING CHAMBER WHILE MAINTAINING THE SUSPENSION IN THE FORM OF A FILM UNDER THE ACTION OF CENTRIFUGAL FORCE IN THE ROTATING CHAMBER, AND SIMULTANEOUSLY APPLYING HEAT TO SAID FILM OF STARCH IN SAID CHAMBER BY WAY OF THE OUTER WALL OF THE CHAMBER.
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |