Patent US1755548A successfully refreshed from Google Patents.
Patent US2606138A successfully refreshed from Google Patents.
US2606138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making plywood having
Assignee: —
•
Filing: —
•
Granted: 1952-08-05
•
Expires: 1969-08-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:24
CPC Classifications
B; B32; B32B; B32B27/00; B27; B27D; B27D1/00; B27D1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE METHOD OF MAKING A WOOD PRODUCT HAVING AN OVERLAY THEREON, WHICH COMPRISES APPLYING TO THE SURFACE OF A WOOD SHEET A SMOOTH EVEN LAYER OF SUBSTANTIAL THICKNESS OF A MIXTURE OF DISCRETE WOOD PARTICLES AND AN AQUEOUS SYNTHETIC RESIN SOLUTION PRELIMINARILY COMPRESSING THE LAYER UNDER HEAT OF AT LEAST SUBSTANTIALLY 250* F. AND UNDER PRESSURE OF AT LEAST SUBSTANTIALLY 30 POUNDS PER SQUARE INCH, FOR AT LEAST 5 SECONDS AND COMPLETELY RELEASING SAID PRELIMINARY COMPRESSING THEREBY COMPACTING THE MIXTURE SUFFICIENTLY TO PREVENT ACCIDENTAL DISTURBANCE OF THE LAYER DURING SUBSEQUENT HANDLING AND SUBSEQUENTLY SUBJECTING THE WOOD SHEET AND THE LAYER TO GREATER HEAT THE PRESSURE FOR A LONGER TIME TO COMPACT THE LAYER AND TO CONVERT THE RESIN TO THE INSOLUBLE INFUSIBLE STATE AND TO BOND THE WOOD PARTICLES TO EACH OTHER AND THE LAYER AS A WHOLE TO THE SURFACE OF THE WOOD SHEET.
Claim 2
Independent Claim
145 words
THE METHOD OF MAKING A WOOD PRODUCT HAVING AN OVERLAY THEREON, WHICH COMPRISES APPLYING TO THE SURFACE OF A WOOD SHEET A SMOOTH EVEN LAYER OF SUBSTANTIAL THICKNESS OF A MIXTURE OF DISCRETE WOOD PARTICLES AND AN AQUEOUS SYNTHETIC RESIN SOLUTION PRELIMINARILY COMPRESSING THE LAYER UNDER HEAT OF AT LEAST SUBSTANTIALLY 250* F. AND UNDER PRESSURE OF AT LEAST SUBSTANTIALLY 30 POUNDS PER SQUARE INCH, FOR AT LEAST 5 SECONDS AND COMPLETELY RELEASING SAID PRELIMINARY COMPRESSING THEREBY COMPACTING THE MIXTURE SUFFICIENTLY TO PREVENT ACCIDENTAL DISTURBANCE OF THE LAYER DURING SUBSEQUENT HANDLING AND SUBSEQUENTLY SUBJECTING THE WOOD SHEET AND THE LAYER TO GREATER HEAT THE PRESSURE FOR A LONGER TIME TO COMPACT THE LAYER AND TO CONVERT THE RESIN TO THE INSOLUBLE INFUSIBLE STATE AND TO BOND THE WOOD PARTICLES TO EACH OTHER AND THE LAYER AS A WHOLE TO THE SURFACE OF THE WOOD SHEET.
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) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |