US3301744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardboard having a paper overlay bonded thereto with a drying oil using a boron trifluoride catalyst
Assignee: Abitibi Power and Paper Co Ltd
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Filing: 1961-09-05
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Granted: 1967-01-31
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Hossain Shafi Ul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:30
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/06; B29; B29C; B29C63/00; B29C63/48; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/253; Y10T428/31504; Y10T428/31844; Y10T428/31848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
ARTIFICIAL BOARD COMPRISING A HARDBOARD BASE MAT, A PAPER OVERLAY ON AT LEAST ONE SURFACE OF SAID HARDBOARD BASE MAT, SAID PAPER OVERLAY BEING BONDED TO THE BASE MAT IN PART BY THE NATURAL BONDING CONSTITUENTS OF THE BASE MAT, A POLYMERIZED DRYING OIL IMPREGNATED IN SAID PAPER OVERLAY AND THE ADJACENT SURFACE OF THE BASE MAT PROVIDING AN ADDITIONAL BOND BETWEEN THE BASE MAT AND THE PAPER OVERLAY, AND A BORON TRIFLUORIDE CATALYST INCORPORATED IN SAID DRYING OIL IN THE AMOUNT OF ABOUT TWO TO TEN PERCENT BY WEIGHT OF THE DRYING OIL; SAID DRYING OIL BEING SELECTED FROM THE GROUP CONSISTING OF LINSEED OIL, TUNG OIL, AND DEHYDRATED CASTOR OIL.
Claim 2
Dependent Claim
112 words
ARTIFICIAL BOARD COMPRISING A HARDBOARD BASE MAT, A PAPER OVERLAY ON AT LEAST ONE SURFACE OF SAID HARDBOARD BASE MAT, SAID PAPER OVERLAY BEING BONDED TO THE BASE MAT IN PART BY THE NATURAL BONDING CONSTITUENTS OF THE BASE MAT, A POLYMERIZED DRYING OIL IMPREGNATED IN SAID PAPER OVERLAY AND THE ADJACENT SURFACE OF THE BASE MAT PROVIDING AN ADDITIONAL BOND BETWEEN THE BASE MAT AND THE PAPER OVERLAY, AND A BORON TRIFLUORIDE CATALYST INCORPORATED IN SAID DRYING OIL IN THE AMOUNT OF ABOUT TWO TO TEN PERCENT BY WEIGHT OF THE DRYING OIL; SAID DRYING OIL BEING SELECTED FROM THE GROUP CONSISTING OF LINSEED OIL, TUNG OIL, AND DEHYDRATED CASTOR OIL.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |