Patent US3703394A successfully refreshed from Google Patents.
US3703394A
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US
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Form board coated with a porous polymer film and a form oil,said film characterized by having solid particles distributed therethrough
Assignee: Champion International Corp
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Filing: 1969-09-19
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Granted: 1972-11-21
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Expires: 1989-09-19
Abstract
Abstract THE PRESENT INVENTION IS CONCERNED WITH A REUSABLE FORM BOARD OF ANY MATERIAL, SUCH AS WOOD, PLYWOOD, HARDBOARD, CEMENT-ASBESTOS OR OTHER FIBROUS BOARD, AND A POROUS POLYMER COATING, WITH OR WITHOUT SOLID MATERIALS, PREFERABLY MICROSPHERES, USED WITH AN OIL COATING APPLIED TO THE BOARD EITHER BEFORE OR AFTER THE PLASTIC COATING, OR AS A BLEND OF THE PLASTIC COATING AND OIL.
Inventors
- 👤 Charles B Hemming
- 👤 Edward L Bernholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:39
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/06; B05D7/08; B05D5/00; B05D5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/249986; Y10T428/249994; Y10T428/249995; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T428/31587; Y10T428/31591; Y10T428/31844; Y10T428/31848; Y10T428/31851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |