Patent US2856885A successfully refreshed from Google Patents.
Patent US3028285A successfully refreshed from Google Patents.
US3028285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic surface plywood article and method for making the same
Assignee: Kimberly Clark Corp
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Filing: 1958-11-10
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Granted: 1962-04-03
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Expires: 1978-11-10
Abstract
No abstract record available.
Inventors
- 👤 Sedgwick C Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:23
CPC Classifications
B; B27; B27D; B27D1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF REDUCING CONTRAST BETWEEN LIGHT SPRINGWOOD AND DARK SUMMERWOOD IN SOFTWOOD PLYWOOD WHILE PROVIDING SAID PLYWOOD WITH A SMOOTH HARD SURFACE, WHICH COMPRISES THE STEPS OF APPLYING TO AT LEAST ONE SURFACE OF SAID PLYWOOD A PAPER IMPREGNATED WITH A THERMOSETTING ALDEHYDE RESIN CONTAINING A HIGHLY REFRACTIVE WHITE PIGMENT AND CURING THE PLYWOOD-PAPER ASSEMBLY FROM ABOUT 10 TO 20 MINUTES AT A TEMPERATURE OF ABOUT 275* TO 325*F. WHILE MAINTAINED UNDER A PRESSURE OF 150 TO 250 P.S.I. TO PRODUCE A PLYWOOD PANEL HAVING A PLASTIC CELLULOSIC SURFACE WITH SUBDUED WOOD GRAIN APPEARANCE, THE RESIN IMPREGNANT COMPRISING ABOUT 30 TO 65% BY WEIGHT OF THE DRY WEIGHT OF THE IMPREGNATED PAPER AND THE PIGMENT IN SAID RESIN COMPRISING ABOUT 0.25 TO 5% BY WEIGHT OF SAID RESIN AND HAVING A REFRACTIVE INDEX GREATER THAN 2.00.
Claim 2
Independent Claim
137 words
THE METHOD OF REDUCING CONTRAST BETWEEN LIGHT SPRINGWOOD AND DARK SUMMERWOOD IN SOFTWOOD PLYWOOD WHILE PROVIDING SAID PLYWOOD WITH A SMOOTH HARD SURFACE, WHICH COMPRISES THE STEPS OF APPLYING TO AT LEAST ONE SURFACE OF SAID PLYWOOD A PAPER IMPREGNATED WITH A THERMOSETTING ALDEHYDE RESIN CONTAINING A HIGHLY REFRACTIVE WHITE PIGMENT AND CURING THE PLYWOOD-PAPER ASSEMBLY FROM ABOUT 10 TO 20 MINUTES AT A TEMPERATURE OF ABOUT 275* TO 325*F. WHILE MAINTAINED UNDER A PRESSURE OF 150 TO 250 P.S.I. TO PRODUCE A PLYWOOD PANEL HAVING A PLASTIC CELLULOSIC SURFACE WITH SUBDUED WOOD GRAIN APPEARANCE, THE RESIN IMPREGNANT COMPRISING ABOUT 30 TO 65% BY WEIGHT OF THE DRY WEIGHT OF THE IMPREGNATED PAPER AND THE PIGMENT IN SAID RESIN COMPRISING ABOUT 0.25 TO 5% BY WEIGHT OF SAID RESIN AND HAVING A REFRACTIVE INDEX GREATER THAN 2.00.
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |