US2928129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of primer coated fiber board
Assignee: Minnesota and Ontario Paper Co
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Filing: 1957-05-13
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Granted: 1960-03-15
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Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 George E Chamberlin
- 👤 Russell G Knutson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:08
CPC Classifications
B; B27; B27N; B27N7/00; B27N7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF PRODUCING HOT PRESSED PRIMED LIGNOCELLULOSIC BOARD COMPRISING HOE PRESSING AT A TEMPERATURE IN EXCESS OF 400*F. TO ABOUT 475*F. A LIGNO-CELLULOSIC MAT CONTAINING A FUSIBLE RESIN, INCLUDING THE TEMPERATURE OF THE HOT PRESSED BOARD TO ABOUT 300*F, THEN APPLYING A PIGMENTED PRIME MATERIAL CONTAINING FUSIBLE RESIN TO THE HOT BOARD, DRYING THE PRIMING MATERIAL BY THE INTERNAL HEAT OF THE BOARD FOR THE PERIOD OF LESS THAN ABOUT THREE MINUTES, AND THEN QUICKLY REDUCING IN LESS THAN ABOUT SIXTY SECONDS THE TEMPERATURE OF THE HOT BOARD BY APPLICATION OF WATER.
Claim 2
Dependent Claim
93 words
THE PROCESS OF PRODUCING HOT PRESSED PRIMED LIGNOCELLULOSIC BOARD COMPRISING HOE PRESSING AT A TEMPERATURE IN EXCESS OF 400*F. TO ABOUT 475*F. A LIGNO-CELLULOSIC MAT CONTAINING A FUSIBLE RESIN, INCLUDING THE TEMPERATURE OF THE HOT PRESSED BOARD TO ABOUT 300*F, THEN APPLYING A PIGMENTED PRIME MATERIAL CONTAINING FUSIBLE RESIN TO THE HOT BOARD, DRYING THE PRIMING MATERIAL BY THE INTERNAL HEAT OF THE BOARD FOR THE PERIOD OF LESS THAN ABOUT THREE MINUTES, AND THEN QUICKLY REDUCING IN LESS THAN ABOUT SIXTY SECONDS THE TEMPERATURE OF THE HOT BOARD BY APPLICATION OF WATER.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |