Patent US2516634A successfully refreshed from Google Patents.
US2516634A
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Cold-water swelling starch ethers in original granule form
Assignee: Penick and Ford Ltd Inc
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Filing: 1947-08-13
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Granted: 1950-07-25
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Expires: 1967-08-13
Abstract
No abstract record available.
Inventors
- 👤 Carl C Kesler
- 👤 Erling T Hjermstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:02
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12; C08B30/18; C08B31/00; C08B31/08; C08B31/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A PROCESS OF THE CHARACTER SET FORTH, THE STEPS OF INTIMATELY DISPERSING FROM .1% TO .5% BY WEIGHT OF SOLUBLE ALKALI IN A MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN UNSWOLLEN GRANULE STARCH AND A CEREAL STARCH DEXTRIN AND CONTAINING FROM 5% TO 15% BY WEIGHT OF MOISTURE, AND THEN GRADUALLY BRINGING INTO CONTACT WITH SAID MATERIAL FROM 1% TO 20% BY WEIGHT OF A MONOFUNCTIONAL EPOXIDE OF A LOWER ALIPHATIC HYDROCARBON IN WHICH THE OXYGEN IS LINKED TO ADJACENT CARBON-HYDROGEN GROUPS AT SUCH A RATE THAT NO LARGE EXCESS OF UNREACTED EPOXIDE IS PRESENT AT ANY TIME AND AGITATING THE MIXTURE IN A CLOSED ZONE UNTIL SUBSTANTIALLY NO FREE EPOXIDE REMAINS.
Claim 2
Dependent Claim
114 words
IN A PROCESS OF THE CHARACTER SET FORTH, THE STEPS OF INTIMATELY DISPERSING FROM .1% TO .5% BY WEIGHT OF SOLUBLE ALKALI IN A MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN UNSWOLLEN GRANULE STARCH AND A CEREAL STARCH DEXTRIN AND CONTAINING FROM 5% TO 15% BY WEIGHT OF MOISTURE, AND THEN GRADUALLY BRINGING INTO CONTACT WITH SAID MATERIAL FROM 1% TO 20% BY WEIGHT OF A MONOFUNCTIONAL EPOXIDE OF A LOWER ALIPHATIC HYDROCARBON IN WHICH THE OXYGEN IS LINKED TO ADJACENT CARBON-HYDROGEN GROUPS AT SUCH A RATE THAT NO LARGE EXCESS OF UNREACTED EPOXIDE IS PRESENT AT ANY TIME AND AGITATING THE MIXTURE IN A CLOSED ZONE UNTIL SUBSTANTIALLY NO FREE EPOXIDE REMAINS.
References Cited (Backward Citations)
US2116867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |