Patent US2640799A successfully refreshed from Google Patents.
US2640799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of continuously uniting resin impregnated cellulosic webs for decorative coverings
Assignee: Paper Patents Co
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Filing: 1948-05-19
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Granted: 1953-06-02
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Expires: 1968-05-19
Abstract
No abstract record available.
Inventors
- 👤 Donald H Grangaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE PROCESS OF MANUFACTURING, AS A CONTINUOUS OPERATION, AN EXTENDED LENGTH OF LAMINATED, SHEET MATERIAL CONTAINING A THERMOSET RESIN OF THE UNSATURATED POLYESTER TYPE, WHICH COMPRISES THE STEPS OF DRYING A PLURALITY OF WEBS OF FIBROUS MATERIAL, IMPREGNATING SAID WEBS WITH A LOW VISCOSITY, POLYESTER RESIN WHICH SAID RESIN IS IN THE REACTED, LIQUID STATE, EFFECTING SUBSTANTIALLY COMPLETE REMOVAL OF AIR FROM SAID WEBS, ADJUSTING THE RESIN CONTENT OF SAID WEBS TO A PREDETERMINED VALUE, BRINGING SAID WEBS INTO SUPERPOSED RELATIONSHIP WITH EACH OTHER, PRESSING THE SUPERPOSED WEBS INTO IMMEDIATE CONTACT WITH A HEATED SURFACE OF LARGE HEAT MASS, MAINTAINING SAID SUPERPOSED WEBS IN ADHERENT CONTACT WITH SAID SURFACE, AT LEAST UNTIL THE RESIN IN CONTACT WITH SAID SURFACE IS THERMOSET, AND FINALLY REMOVING THE SHEET MATERIAL FROM SAID SURFACE.
Claim 2
Dependent Claim
130 words
THE PROCESS OF MANUFACTURING, AS A CONTINUOUS OPERATION, AN EXTENDED LENGTH OF LAMINATED, SHEET MATERIAL CONTAINING A THERMOSET RESIN OF THE UNSATURATED POLYESTER TYPE, WHICH COMPRISES THE STEPS OF DRYING A PLURALITY OF WEBS OF FIBROUS MATERIAL, IMPREGNATING SAID WEBS WITH A LOW VISCOSITY, POLYESTER RESIN WHICH SAID RESIN IS IN THE REACTED, LIQUID STATE, EFFECTING SUBSTANTIALLY COMPLETE REMOVAL OF AIR FROM SAID WEBS, ADJUSTING THE RESIN CONTENT OF SAID WEBS TO A PREDETERMINED VALUE, BRINGING SAID WEBS INTO SUPERPOSED RELATIONSHIP WITH EACH OTHER, PRESSING THE SUPERPOSED WEBS INTO IMMEDIATE CONTACT WITH A HEATED SURFACE OF LARGE HEAT MASS, MAINTAINING SAID SUPERPOSED WEBS IN ADHERENT CONTACT WITH SAID SURFACE, AT LEAST UNTIL THE RESIN IN CONTACT WITH SAID SURFACE IS THERMOSET, AND FINALLY REMOVING THE SHEET MATERIAL FROM SAID SURFACE.
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |