Patent US1865051A successfully refreshed from Google Patents.
US2532983A
Expired / Lapsed
US
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Plywood
Assignee: EIDP Inc
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Filing: 1945-06-19
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Granted: 1950-12-05
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Expires: 1965-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Witty Lysle Alderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31942; Y10T428/31949; Y10T428/31957
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A METHOD FOR OBTAINING IMPROVED PLYWOOD COMPRISING SUBJECTING TO A PRESSURE OF FROM 100 TO 400 POUNDS PER SQUARE INCH AND HEATING FROM 100*C. TO 175*C., A PLURALITY OF LAMINAE COMPRISING AT LEAST TWO WOOD LAMINAE HAVING A BONDING LAYER THEREBETWEEN WHICH COMPRISES A HEATCONVERTIBLE COMPOSITION COMPRISING POLYMERIC MATERIAL AND A MINOR AMOUNT OF AN ORGANIC PEROXY COMPOUND, THE POLYMERIC MATERIAL IN SAID COMPOSITION CONSISTING OF THAT SELECTED FROM THE GROUP CONSISTING OF (A) A POLYMERIZED VINYL CARBOXYLATE AND (B) A MIXTURE OF SAID CARBOXYLATE WITH FROM 1% TO 30% OF ITS WEIGHT OF AN ALDEHYDE CONDENSATION PRODUCT SELECTED FROM THE CLASS CONSISTING OF PHENOL-FORMALDEHYDE RESOLS AND HEAT-CONVERTIBLE, SOLUBLE-STAGE MELAMINEFORMALDEHYDE AND UREA-FORMALDEHYDE CONDENSATION PRODUCTS, SAID PEROXY COMPOUND BEING PRESENT IN AMOUNT OF FROM 1% TO 30% BY WEIGHT OF SAID VINYL CARBOXYLATE.
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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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |