US2650205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline-setting resin-starch reaction product and methods of preparation thereof
Assignee: Penick and Ford Ltd Inc
•
Filing: 1950-09-12
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Granted: 1953-08-25
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Expires: 1970-09-12
Abstract
No abstract record available.
Inventors
- 👤 Carl C Kesler
- 👤 Erling T Hjermstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:06
CPC Classifications
C; C09; C09J; C09J103/00; C09J103/02; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PROCESS FOR PREPARING FROM ALKALINE SETTING RESINS AND GRANULE STARCH A REACTION PRODUCT CHARACTERIZED BY BEING SUSCEPTIBLE TO GELATINIZATION TO FORM PASTES HAVING STABILIZED VISCOSITIES, THE STEP OF REACTING FILTERABLE, GRANULE STARCH IN A WATER MEDIUM AT A PH FROM 7.0 TO 11.0 WITH FROM .05 TO 2.0% ON A STARCH BASIS OF A WATER-SOLUBLE ALKALINE SETTING RESIN SELECTED FROM THE GROUP CONSISTING OF KETONE-ALDEHYDE RESINS, RESOCINOL-ALDEHYDE RESINS AND PHENOLALDEHYDE RESINS BY HEATING SAID REACTANTS UNDER NON-GELATINIZING CONDITIONS, SAID STARCH GRANULES BEING AT NOT TIME HYDRATED TO THE DEGREE THAT LEACHING OUT OF THE GRANULE CONSTITUENTS AWAY FROM THE GRANULE PROPER OCCURS SO THAT SAID STARCH GRANULES REMAIN IN FILTERABLE CONDITION UPON COMPLETION OF SAID REACTION.
Claim 2
Dependent Claim
118 words
IN A PROCESS FOR PREPARING FROM ALKALINE SETTING RESINS AND GRANULE STARCH A REACTION PRODUCT CHARACTERIZED BY BEING SUSCEPTIBLE TO GELATINIZATION TO FORM PASTES HAVING STABILIZED VISCOSITIES, THE STEP OF REACTING FILTERABLE, GRANULE STARCH IN A WATER MEDIUM AT A PH FROM 7.0 TO 11.0 WITH FROM .05 TO 2.0% ON A STARCH BASIS OF A WATER-SOLUBLE ALKALINE SETTING RESIN SELECTED FROM THE GROUP CONSISTING OF KETONE-ALDEHYDE RESINS, RESOCINOL-ALDEHYDE RESINS AND PHENOLALDEHYDE RESINS BY HEATING SAID REACTANTS UNDER NON-GELATINIZING CONDITIONS, SAID STARCH GRANULES BEING AT NOT TIME HYDRATED TO THE DEGREE THAT LEACHING OUT OF THE GRANULE CONSTITUENTS AWAY FROM THE GRANULE PROPER OCCURS SO THAT SAID STARCH GRANULES REMAIN IN FILTERABLE CONDITION UPON COMPLETION OF SAID REACTION.
References Cited (Backward Citations)
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US2362086A
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US2407071A
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US2489170A
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US2626934A
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US2529851A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |