Patent US3141718A successfully refreshed from Google Patents.
Patent US2675338A successfully refreshed from Google Patents.
US2675338A
Expired / Lapsed
US
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Process for post forming plywood
Assignee: Wyeth Holdings LLC
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Filing: 1951-01-18
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Granted: 1954-04-13
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Expires: 1971-01-18
Abstract
No abstract record available.
Inventors
- 👤 Dorothea S Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:17
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; B27D1/08; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR POST-FORMING PLYWOOD ARTICLES COMPRISING COATING A PLURALITY OF WOOD PLIES WITH AN ADHESIVE MATERIAL COMPRISING AN AQUEOUS DISPERSION OF (A) ABOUT 5%-25% BY WEIGHT OF EMULSIFIED POLYVINYL ACETATE AND (B) ABOUT 75-95% BY WEIGHT OF A WATER DISPERSIBLE THEREMOSETTING AMINOPLAST RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE-FORMALDEHYDE RESIN AND UREA-FORMALDEHYDE RESIN, COMBINING SAID PLIES INTO A SUBSTANTIALLY FLAT ASSEMBLY, UNITING AND COLD CURING SAID ASSEMBLY INT A FLAT, UNITARY STRUCTURE BY THE APPLICATION OF PRESSURE AT A TEMPERATURE BETWEEN ABOUT 25* C.-50* C., SURFACE FINISHING SAID FLAT STRUCTURE BY THE APPLICATION OF FORMING SAID FLAT STRUCTURE BY THE APPLICATION OF HEAT AND PRESSURE THERETO BETWEEN THE FACES OF A MOLD.
Claim 2
Dependent Claim
114 words
A PROCESS FOR POST-FORMING PLYWOOD ARTICLES COMPRISING COATING A PLURALITY OF WOOD PLIES WITH AN ADHESIVE MATERIAL COMPRISING AN AQUEOUS DISPERSION OF (A) ABOUT 5%-25% BY WEIGHT OF EMULSIFIED POLYVINYL ACETATE AND (B) ABOUT 75-95% BY WEIGHT OF A WATER DISPERSIBLE THEREMOSETTING AMINOPLAST RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE-FORMALDEHYDE RESIN AND UREA-FORMALDEHYDE RESIN, COMBINING SAID PLIES INTO A SUBSTANTIALLY FLAT ASSEMBLY, UNITING AND COLD CURING SAID ASSEMBLY INT A FLAT, UNITARY STRUCTURE BY THE APPLICATION OF PRESSURE AT A TEMPERATURE BETWEEN ABOUT 25* C.-50* C., SURFACE FINISHING SAID FLAT STRUCTURE BY THE APPLICATION OF FORMING SAID FLAT STRUCTURE BY THE APPLICATION OF HEAT AND PRESSURE THERETO BETWEEN THE FACES OF A MOLD.
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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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |