US3208864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lignocellulose method and reaction product
Assignee: CARADCO Corp A CORP OF DE
•
Filing: 1962-05-04
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Granted: 1965-09-28
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 William T Glab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:35
CPC Classifications
C; C08; C08H; C08H8/00; D; D21; D21C; D21C11/00; D21C11/0007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF MAKING A LIGNOCELLULOSE PRODUCT CAPABLE OF BEING PRESSURE MOLDED, CONSISTING ESSENTIALLY OF: INTIMATELY MIXING FINELY DIVIDED LIGNOCELLULOSE THAT IS DRY TO THE TOUCH WITH ABOUT 0.1-30.0% BY WEIGHT OF A REACTANT OF THE CLASS CONSISTING OF ANILINE, TRIETHANOLAMINE, MORPHOLINE, TETRATHANOL AMMINOUM HYDROXIDE, FORMAMIDE, DICYANDIAMIDE, MELAMINE, UREA PLUS ALUMINUM CHLORIDE, UREA PLUS SULFUR DIOXIDE AND UREA PLUS FORMALDEHYDE TO PROVIDE AN ESSENTIALLY DRY MIXTURE; HEATING SAID DRY MIXTURE IN A CONFINED ATMOSPHERE AT AN INTERNAL PRESSURE OF ABOUT 50-550 POUNDS PER SQUARE INCH GAUGE AND A TEMPERATURE OF ABOUT 275-475*F. FOR ABOUT 4-60 MINUTES TO REACT SAID REACTANT AND LIGNOCELLULOSE; AND SUPPLYING STEAM TO SAID CONFINED ATMOSPHERE DURING THE REACTING TO PROVIDE HEAT AND A CONTROLLED AMOUNT OF MOSITURE TO SAID REACTION.
Claim 2
Independent Claim
124 words
THE METHOD OF MAKING A LIGNOCELLULOSE PRODUCT CAPABLE OF BEING PRESSURE MOLDED, CONSISTING ESSENTIALLY OF: INTIMATELY MIXING FINELY DIVIDED LIGNOCELLULOSE THAT IS DRY TO THE TOUCH WITH ABOUT 0.1-30.0% BY WEIGHT OF A REACTANT OF THE CLASS CONSISTING OF ANILINE, TRIETHANOLAMINE, MORPHOLINE, TETRATHANOL AMMINOUM HYDROXIDE, FORMAMIDE, DICYANDIAMIDE, MELAMINE, UREA PLUS ALUMINUM CHLORIDE, UREA PLUS SULFUR DIOXIDE AND UREA PLUS FORMALDEHYDE TO PROVIDE AN ESSENTIALLY DRY MIXTURE; HEATING SAID DRY MIXTURE IN A CONFINED ATMOSPHERE AT AN INTERNAL PRESSURE OF ABOUT 50-550 POUNDS PER SQUARE INCH GAUGE AND A TEMPERATURE OF ABOUT 275-475*F. FOR ABOUT 4-60 MINUTES TO REACT SAID REACTANT AND LIGNOCELLULOSE; AND SUPPLYING STEAM TO SAID CONFINED ATMOSPHERE DURING THE REACTING TO PROVIDE HEAT AND A CONTROLLED AMOUNT OF MOSITURE TO SAID REACTION.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |