US2977356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing cross-linked starch ethers in granule form
Assignee: Anheuser Busch Companies LLC
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Filing: 1958-05-27
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Granted: 1961-03-28
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Expires: 1978-05-27
Abstract
No abstract record available.
Inventors
- 👤 John D Commerford
- 👤 Ehrenthal Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:00
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/003; C08B31/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR PREPARING UNSWOLLEN CROSS-LINKED STARCH ETHERS IN GRANULE FORM INCLUDING THE STEPS OF PROVIDING A STARCH SLURRY IN GRANULE FORM, ADDING THERETO FROM ABOUT 0.01 TO ABOUT 0.15 MOLE OF DIEPOXIDE PER MOLE OF ANHYDROGLUCOSE UNIT OF THE STARCH, SAID STARCH AND DIEPOXIDE BEING REACTED AT A TEMPERATURE OF FROM ABOUT 65*F. TO ABOUT 130*F. FOR A PERIOD OF TIME SUFFICIENT TO CROSS-LINK SAID DIEPOXIDE AND STARCH, DEWATERING AND DRYING SAID CROSS-LINKED PRODUCT TO RECOVER A DRIED, UNGELATINIZED STARCH PRODUCT IN GRANULE FORM.
Claim 2
Dependent Claim
85 words
A PROCESS FOR PREPARING UNSWOLLEN CROSS-LINKED STARCH ETHERS IN GRANULE FORM INCLUDING THE STEPS OF PROVIDING A STARCH SLURRY IN GRANULE FORM, ADDING THERETO FROM ABOUT 0.01 TO ABOUT 0.15 MOLE OF DIEPOXIDE PER MOLE OF ANHYDROGLUCOSE UNIT OF THE STARCH, SAID STARCH AND DIEPOXIDE BEING REACTED AT A TEMPERATURE OF FROM ABOUT 65*F. TO ABOUT 130*F. FOR A PERIOD OF TIME SUFFICIENT TO CROSS-LINK SAID DIEPOXIDE AND STARCH, DEWATERING AND DRYING SAID CROSS-LINKED PRODUCT TO RECOVER A DRIED, UNGELATINIZED STARCH PRODUCT IN GRANULE FORM.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |