Patent US2636833A successfully refreshed from Google Patents.
US2636833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing supercalendered plasticized glassine paper
Assignee: Riegel Paper Corp
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Filing: 1952-11-07
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Granted: 1953-04-28
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Expires: 1972-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jr George C Borden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF PRODUCING PLASTICIZED, SUPERCALENDERED GLASSINE PAPER WHICH COMPRISES APPLYING TO THE GLASSINE PAPER A PLASTICIZING COMPOSITION CONTAINING INVERT SUGAR AS ITS PRINCIPAL PLASTICIZING MEDIUM, SUPERCALENDERING THE PLASTICIZED GLASSINE PAPER BY PASSING IT OVER HEATED ROLLS AND HEATING THE PAPER DURING SUPERCALENDERING TO A TEMPERATURE ABOVE 160* F., WHICH WOULD CAUSE CARAMELIZATION OR DISCOLORIZATION OF THE INVERT SUGAR IF THE SUPERCALENDERED PAPER WERE PERMITTED TO COOL SLOWLY, THE MAXIMUM TEMPERATURE TO WHICH THE PAPER IS HEATED DURING THE SUPERCALENDERING BEING BELOW THAT TEMPERATURE AT WHICH THE PAPER WILL BE INJURED, RAPIDLY COOLING THE PAPER AFTER THE SUPERCALENDERING THEREOF TO A TEMPERATURE BELOW ABOUT 140* F. SO THAT CARAMELIZATION OR DISCOLORIZATION OF THE PAPER DOES NOT TAKE PLACE, AND THEREAFTER ROLLING THE COOLED SUPERCALENDERED GLASSINE PAPER IN A ROLL.
Claim 2
Independent Claim
129 words
THE METHOD OF PRODUCING PLASTICIZED, SUPERCALENDERED GLASSINE PAPER WHICH COMPRISES APPLYING TO THE GLASSINE PAPER A PLASTICIZING COMPOSITION CONTAINING INVERT SUGAR AS ITS PRINCIPAL PLASTICIZING MEDIUM, SUPERCALENDERING THE PLASTICIZED GLASSINE PAPER BY PASSING IT OVER HEATED ROLLS AND HEATING THE PAPER DURING SUPERCALENDERING TO A TEMPERATURE ABOVE 160* F., WHICH WOULD CAUSE CARAMELIZATION OR DISCOLORIZATION OF THE INVERT SUGAR IF THE SUPERCALENDERED PAPER WERE PERMITTED TO COOL SLOWLY, THE MAXIMUM TEMPERATURE TO WHICH THE PAPER IS HEATED DURING THE SUPERCALENDERING BEING BELOW THAT TEMPERATURE AT WHICH THE PAPER WILL BE INJURED, RAPIDLY COOLING THE PAPER AFTER THE SUPERCALENDERING THEREOF TO A TEMPERATURE BELOW ABOUT 140* F. SO THAT CARAMELIZATION OR DISCOLORIZATION OF THE PAPER DOES NOT TAKE PLACE, AND THEREAFTER ROLLING THE COOLED SUPERCALENDERED GLASSINE PAPER IN A ROLL.
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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |