Patent US3056718A successfully refreshed from Google Patents.
US3056718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating hardboard surfaces
Assignee: Masonite Corp
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Filing: 1959-06-29
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Granted: 1962-10-02
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Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert E Grissom
- 👤 William A Saums
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:16
CPC Classifications
B; B27; B27M; B27M1/00; B27M1/02; D; D21; D21J; D21J1/00; D21J1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR PRODUCING A LIGNOCELLULOSE HARDBOARD SHEET ARTICLE HAVING TWO SMOOTH SURFACES CHARACTERIZED BY FREEDOM FROM SCREEN MARKS WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF HYDROLYZED LIGNOCELLULOSE FIBER, FELTING A FIBROUS MAT FROM SAID SLURRY, PARTIALLY DEWATERING THE FIBROUS MAT BY THE APPLICATION THERETO OF SUCTION AND PRESSURE, APPLYING AT LEAST ONE SURFACES OF THE MAT ABOUT 0.1%-1.0% BY WEIGHT BASED ON THE DRY WEIGHT OF FIBER OF A NATURALLY OCCURING NON-CONJUGATED VEGETABLE DRYING OIL, DRYING THE TREATED MAT TO SUBSTANTIAL DRYNESS, AND THEREAFTER CONSOLIDATING THE DRIED MAT UNDER HEAT AND PRESSURE, SAID SURFACE TREATMENT WITH THE DRYING OIL SUBSTANTIALLY ELIMINATING SURFACE DEFECTS ON THE FINISHED PRODUCT.
Claim 2
Dependent Claim
108 words
A PROCESS FOR PRODUCING A LIGNOCELLULOSE HARDBOARD SHEET ARTICLE HAVING TWO SMOOTH SURFACES CHARACTERIZED BY FREEDOM FROM SCREEN MARKS WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF HYDROLYZED LIGNOCELLULOSE FIBER, FELTING A FIBROUS MAT FROM SAID SLURRY, PARTIALLY DEWATERING THE FIBROUS MAT BY THE APPLICATION THERETO OF SUCTION AND PRESSURE, APPLYING AT LEAST ONE SURFACES OF THE MAT ABOUT 0.1%-1.0% BY WEIGHT BASED ON THE DRY WEIGHT OF FIBER OF A NATURALLY OCCURING NON-CONJUGATED VEGETABLE DRYING OIL, DRYING THE TREATED MAT TO SUBSTANTIAL DRYNESS, AND THEREAFTER CONSOLIDATING THE DRIED MAT UNDER HEAT AND PRESSURE, SAID SURFACE TREATMENT WITH THE DRYING OIL SUBSTANTIALLY ELIMINATING SURFACE DEFECTS ON THE FINISHED PRODUCT.
References Cited (Backward Citations)
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US2409628A
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US2375450A
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US2654296A
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US2721504A
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US2863364A
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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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |