US3741853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repair of wood panels
Assignee: Publishers Paper Co
•
Filing: 1970-08-06
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Granted: 1973-06-26
•
Expires: 1990-08-06
Abstract
Abstract A PLYWOOD PANEL HAVING A FILLED REGION OF REPAIR THEREIN, AND A METHOD OF FILLING SUCH REGION. A FILLER COMPOSITION IS USED COMPRISING A MIXTURE OF FROM 3 TO 10% BY WEIGHT COMMINUTED CORK WITH THE REMAINDER BEING ESSENTIALLY A THERMOSETTING RESIN BINDER. THE CORK HAS A PARTICLE SIZE WHICH PASSES A 20 MESH SCREEN AND IS RETAINED OF A 40 MESH SCREEN. IN THE FILLING OF A REGION OF REPAIR, THE FILLER COMPOSITION IS POURED INTO A PREVIOUSLY PREPARED HOLE AND ALLOWED TO CURE. DURING CURING, PARTICLES OF CORK FLOAT TO THE SURFACE OF THE FILLER COMPOSITION, PRODUCING STRATIFICATION OF THE MIXTURE WITH A LAYER RICH IN CORK ADJACENT THE SURFACE OF THE REGION OF REPAIR.
Inventors
- 👤 D Forsythe
- 👤 W Runckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:26
CPC Classifications
B; B27; B27G; B27G1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |