US2976164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lignocellulose product and method
Assignee: Durel Inc
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Filing: 1958-09-25
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Granted: 1961-03-21
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Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 William T Glab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:07
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF MAKING A MOLDABLE LIGNOCELLULOSE PRODUCT, CONSISTING ESSENTIALLY OF: INTIMATELY MIXING FINELY DIVIDED LIGNOCELLULOSE MATERIAL WITH ABOUT 0.1-50% OF A CHLORIDE CATALYST CAPABLE OF CATALYZING THE CONVERSION OF AT LEAST A PORTION OF THE LIGNOCELLULOSE TO A MATERIAL CAPABLE OF BEING CONSOLIDATED UNDER HEAT AND PRESSURE, AND HEATING SAID MIXTURE IN A CONFINED ATMOSPHERE IN THE PRESENCE OF MOISTURE IN A CONFINED ATMOSPHERE IN THE POUNDS PER SQUARE INCH GUAGE AND A TEMPERATURE OF ABOUT 250-500*F. FOR ABOUT 4-60 MINUTES, SAID PERCENTAGE BEING BY WEIGHT OF THE LIGNOCELLULOSE.
Claim 2
Independent Claim
90 words
THE METHOD OF MAKING A MOLDABLE LIGNOCELLULOSE PRODUCT, CONSISTING ESSENTIALLY OF: INTIMATELY MIXING FINELY DIVIDED LIGNOCELLULOSE MATERIAL WITH ABOUT 0.1-50% OF A CHLORIDE CATALYST CAPABLE OF CATALYZING THE CONVERSION OF AT LEAST A PORTION OF THE LIGNOCELLULOSE TO A MATERIAL CAPABLE OF BEING CONSOLIDATED UNDER HEAT AND PRESSURE, AND HEATING SAID MIXTURE IN A CONFINED ATMOSPHERE IN THE PRESENCE OF MOISTURE IN A CONFINED ATMOSPHERE IN THE POUNDS PER SQUARE INCH GUAGE AND A TEMPERATURE OF ABOUT 250-500*F. FOR ABOUT 4-60 MINUTES, SAID PERCENTAGE BEING BY WEIGHT OF THE LIGNOCELLULOSE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |