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US3092508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating coated fiberboard
Assignee: Minnesota and Ontario Paper Co
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Filing: 1960-09-20
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Granted: 1963-06-04
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Expires: 1980-09-20
Abstract
No abstract record available.
Inventors
- 👤 William H Barrett
- 👤 John C Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:59
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF IMPROVING THE CUPPONG RESISTANCE OF A POROUS AND COMPRESSIBLE CELLULOSIC FIBERBOARD BRIED IN A HOT AIR DRYER COMPRISING APPLYING TO AT LEAST ONE SURFACE A FILM OF AQUEOUS HEAT SETTABLE DECORATIVE COATING MATERIAL AND THEREAFTER SUBJECTING THE SURFACE COATED FIBERBOARD HAVING A TEMPERATURE OF ABOUT 100*F. TO ABOUT 170*F. TO CONTROLLED FLEXING BEFORE COMPLETE SETTING OF THE SAID COATING MATERIAL WITH A CURVED SURFACE WHILE SUPPORTING THE FIBERBOARD ALONG THE EDGES THEREON, THEN REMOVING THE BOARD FROM THE EDGE SPPORTS, AND PERMITING THE FIBERBOARD TO FLATTEN.
Claim 2
Independent Claim
89 words
A METHOD OF IMPROVING THE CUPPONG RESISTANCE OF A POROUS AND COMPRESSIBLE CELLULOSIC FIBERBOARD BRIED IN A HOT AIR DRYER COMPRISING APPLYING TO AT LEAST ONE SURFACE A FILM OF AQUEOUS HEAT SETTABLE DECORATIVE COATING MATERIAL AND THEREAFTER SUBJECTING THE SURFACE COATED FIBERBOARD HAVING A TEMPERATURE OF ABOUT 100*F. TO ABOUT 170*F. TO CONTROLLED FLEXING BEFORE COMPLETE SETTING OF THE SAID COATING MATERIAL WITH A CURVED SURFACE WHILE SUPPORTING THE FIBERBOARD ALONG THE EDGES THEREON, THEN REMOVING THE BOARD FROM THE EDGE SPPORTS, AND PERMITING THE FIBERBOARD TO FLATTEN.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |