US2824037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an adhesive and method of making a paper product
Assignee: Individual
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Filing: 1954-09-15
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Granted: 1958-02-18
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 King Henry Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:34
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
169 words
THE METHOD OF MAKING A LAMINATED PAPER PRODUCT, COMPRISING: PREPARING AN AQUEOUS FLOWABLE STARCH CONPOSTION CONTAINING AT LEAST ABOUT 4% BY WEIGHT OF STARCH, AND WATER IN A RATIO OF ABOUT 3 PARTS BY WEIGHT OF WATER TO ABOUT 1 TO ABOUT 2 PARTS BY WEIGHT OF STARCH AND A GELATINIZING MATERIAL, PRELIMINARILY HEATING SAID COMPOSITION TO AN INITIAL TEMPERATURE SUFFICIENT TO PARTIALLY GELATINIZE AND THICKEN SAID STARCH COMPOSITION UNDER THE ACTION OF SAID STRACH GELATINIZING MATERIAL UNTIL THE COMPOSITION REACHES A BAUER VISCOSITY OF ABOUT 20-40 SECONDS, ADDING TO SAID THICKENED MATERIAL WHILE IT IS STILL FLOWABLE AND WITHOUT SUBSTANTIAL COOLING AN INACTIVATING AGENT FOR SAID STARCH GELATINIZING MATERIAL TO STOP SUBSTANTIALLY SAID GELATINIZING BY SAID STARCH GELATINIZING MATERIAL, THEN APPLYING SAID HEATED THICKENED MATERIAL TO THE PAPER LAMINATES, SUBSTANTIALLY IMMEDIATELY PRESSING SAID LAMINATES INTO INTIMATE CONTACT TO FORM AN ASSEMBLY, AND THEREAFTER SUBSTANTIALLY IMMEDIATELY HEATING THE ASSEMBLY TO A FINAL STARCH GELATINIZING TEMPERATURE THAT IS ABOVE SAID INITIAL TEMPERATURE TO GELATINIZE THE STARCH FURTHER TOWARD COMPLETE GELATINIZATION.
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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |