Patent US5702155A successfully refreshed from Google Patents.
Patent US3690979A successfully refreshed from Google Patents.
US3690979A
Expired / Lapsed
US
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Method of laying up plywood panels
Assignee: Simpson Timber Co
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Filing: 1969-11-18
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Granted: 1972-09-12
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Expires: 1989-11-18
Abstract
Abstract PLYWOOD PANELS OF FIVE OR MORE PLIES ARE LAYED UP BY COATING THE OUTER PILES, I.E. THE FACE AND BACK PLIES, ON ONE SIDE WITH A LONG FLOW PHENOLIC ADHESIVE, LAYING ONE PIECE CROSS BAND VENEERS OVER EACH OT THE ADHESIVE COATED VENEERS TO FORM A SERIES OF TWO PLY SANDWICHES, COATING A SHEET OF CENTER VENEER ON BOTH SIDES WITH A FAST CURING ADHESIVE RELATIVE TO THE CURING TIME OF THE LONG FLOW ADHESIVE, LAYING THE ADHESIVE COATED CENTER VENEER OVER THE UNCOATED CROSS BAND SHEET OF VENEER OF ONE OF THE TWO-PLY STRUCTURES AND LAYING A SECOND TWO-PLY STRUCTURE OVER THE ADHESIVE COATED CENTER, THE CROSS BAND OF THE SECOND TWOPLY SANDWICH CONTACTING THE ADHESIVE COATED CENTER PLY.
Inventors
- 👤 Reino A Jarvi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:33
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31989
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |