US3668007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syrup fractionation process
Assignee: Grain Processing Corp
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Filing: 1970-10-08
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Granted: 1972-06-06
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Expires: 1990-10-08
Abstract
Abstract STARCH IS SUBJECTED TO HYDROLYSIS WITH AN ACID TO CONVERT THE STARCH TO HYDROLYZATE PRODUCT WHICH IS THEN FRACTIONATED UNDER APPLIED PRESSURE BY MEANS OF MEMBRANE SEPARATION TO RECOVER A LOWER CONVERSION PRODUCT AND A HIGHER CONVERSION PRODUCT.
Inventors
- 👤 Carl Thomas Egger
- 👤 Gerald Bernard Pfundstein
- 👤 Donald Lee Gillenwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:11
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; C; C13; C13K; C13K1/00; C13K1/06; C13K13/00; C13K13/007
Claims Analysis
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |