US3687749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a moldable pulp composition for making shaped articles
Assignee: Individual
•
Filing: 1969-10-16
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Granted: 1972-08-29
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Expires: 1989-10-16
Abstract
Abstract METHOD FOR PRODUCING A MOLDABLE PULP COMPOSITION BY GRINDING A MASS OF CELLULOSIC MATERIAL IN A DEFIBRATION ZONE IN THE PRESENCE OF A GASEOUS MEDIUM AT A TEMPERATURE ABOVE 100*C. AND AT SUPERATMOSPHERIC PRESSURE DISPERSING INTO THE RESULTANT PULP A POLYMERIZABLE BINDER AND RETARDING THE POLYMERIZATION THEREOF DURING ITS PASSAGE TO THE MOLDING ZONE TO COUNTERACT DEPOSIT OF SAID BINDER MATERIAL IN THE PASSAGES.
Inventors
- 👤 Rolf Bertil Reinhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
B; B27; B27N; B27N1/00; B27N1/02; B27N1/0281; B27N1/0209
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |