Patent US3673020A successfully refreshed from Google Patents.
US3673020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of particle boards utilizing a dry organic binder
Assignee: Individual
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Filing: 1969-03-04
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Granted: 1972-06-27
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Expires: 1989-03-04
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF BOARDS CONSISTING OF AT LEAST ONE LAYER, WHEREIN SAWDUST HAVING A PARTICLE SIZE BELOW 1 MM. IS MIXED WITH A QUANTITY OF BINDING AGENT RANGING BETWEEN 5% AND 15% OF THE WEIGHT OF THE DRY SAWDUST, AND A LAYER IS FORMED BY SPREADING THE MIXTURE IN A LAYER OF SUCH A THICKNESS THAT A FINAL LAYER OF A THICKNESS RANGING BETWEEN 0.5 MM. AND 5 MM. IS OBTAINED, AND BY SIMULTANEOUSLY APPLYING A PRESSURE RANGING BETWEEN 80 KG./CM.2 AND 150 KG/CM2 AT A TEMPERATURE RANGING BETWEEN 130*C. AND 180*C. A PROCESS IN WHICH AN AGENT INCREASING THE INTERNAL HEAT RESISTANCE IS ADDED TO SAID MIXTURE.
Inventors
- 👤 Norbert Maurice De Jaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:02
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/06; C; C08; C08L; C08L97/00; C08L97/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1093
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |