US2534923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoset laminated member
Assignee: Westinghouse Electric Corp
•
Filing: 1944-09-09
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Granted: 1950-12-19
•
Expires: 1964-09-09
Abstract
No abstract record available.
Inventors
- 👤 Fritz J Nagel
- 👤 Bruce C Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
152 words
IN THE PROCESS OF PORODUCING COMPLEX SHAPED MEMBERS,THE STEPS COMPRISING APPLYING TO A FIBROUS SHEET MATERIAL AT LEAST 50% OF ITS WEIGHT OF THE PARTIAL REACTION PRODUCT OF FROM 35 TO 75 PARTS BY WEIGHT FO AN ARYLAMINE, 65 TO 25 PARTS BY WEIGHT OF A PHENOL AND FORM 0.8 TO 1.5 MOLS OF FORMALDEHYDE FOR EACH MOL OF PHENOL AND ARYLAMINE, SUPERIMPOSING A PLURALITY OF THE FIBROUS SHEETS WITH THE APPLIED PARTIAL REACTION PRODUCT, CONSOLIDATING THE SUPERIMPOSED SHEETS UNDER HEAT AND PRESSURE OF THE ORDER OF 1000 POUNDS PER SQUARE INCH INTO A RELATIVELY FLAT FULLY CURED, THERMOSET LAMINATE, RELIEVING THE PRESSURE AND COOLING THE FLAT LAMINATE, SUBSEQUENTLY HEATING THE LAMINATE TO A TEMPERATURE OF FORM 150* C. TO 200C. AND SUBJECTING THE LAMINATE TO PRESSURE OF LESS THAN 100 POUNDS PER SQUARE INCH TO FORM IT INTO THE PREDETERMINED COMPLEX SHAPED MEMBER AND COOLING THE MEMBER TO RETAIN THE SHAPE.
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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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |