US3011900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making a lignocellulose product and products resulting therefrom
Assignee: Durel Inc
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Filing: 1958-10-03
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Granted: 1961-12-05
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Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 William T Glab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:22
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
THE METHOD OF MAKING A LIGNOCELLULOSE PRODUCT CONSISTING ESSENTIALLY OF: INTIMATELY MIXING PARTICLES OF ESSENTIALLY DRY LIGNOCELLULOSE WITH ABOUT 0.5-15.0% OF A BASE OF THE CLASS CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL OXIDES, HYDROXIDES AND CARBONATES BY WEIGHT OF THE LIGNOCELLULOSE, AND HEATING THE RESULTING COMPOSITION IN THE PRESENCE OF STEAM UNDER SUPERATMOSPHERIC CONFINED PRESSURE OF BETWEEN ABOUT 100-600 POUNDS PER SQUARE INCH FOR BETWEEN ABOUT 4-60 MINUTES AND AT BETWEEN ABOUT 300-550*F. TO FORM A REACTION PRODUCT OF SAID BASE WITH 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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |