US2864715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making a lignocellulose product and products resulting therefrom
Assignee: Carr Adams and Collier Co
•
Filing: 1954-07-15
•
Granted: 1958-12-16
•
Expires: 1974-07-15
Abstract
No abstract record available.
Inventors
- 👤 William T Glab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:01
CPC Classifications
C; C08; C08H; C08H8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF MAKING A MOLDABLE AND EXTRUDABLE COMPOSITION IN A SUBSTANTIALLY DRY PROCESS, CONSISTING ESSENTIALLY OF: REACTING FINELY-DIVIDED ESSENTIALLY DRY LIGNOCELLULOSE IN THE ABSENCE OF SUBSTANTIAL AMOUNTS OF ADDED WATER AND FROM ABOUT 0.5-20% OF SULFUR IN THE PRESENCE OF STEAM AT A TEMPERATURE OF ABOUT 300-550*F. IN A CONFINED ATMOSPHERE AT A TEMPERATURE OF FROM ABOUT 300-550*F. AT A GUAGE PRESSURE OF AT LEAST ABOUT 200 POUNDS PER SQUARE INCH FOR FROM ABOUT 4-60 MINUTES, ALL SAID PERCENTAGES BEING BY WEIGHT OF SAID LIGNOCELLULOSE.
Claim 2
Independent Claim
86 words
THE METHOD OF MAKING A MOLDABLE AND EXTRUDABLE COMPOSITION IN A SUBSTANTIALLY DRY PROCESS, CONSISTING ESSENTIALLY OF: REACTING FINELY-DIVIDED ESSENTIALLY DRY LIGNOCELLULOSE IN THE ABSENCE OF SUBSTANTIAL AMOUNTS OF ADDED WATER AND FROM ABOUT 0.5-20% OF SULFUR IN THE PRESENCE OF STEAM AT A TEMPERATURE OF ABOUT 300-550*F. IN A CONFINED ATMOSPHERE AT A TEMPERATURE OF FROM ABOUT 300-550*F. AT A GUAGE PRESSURE OF AT LEAST ABOUT 200 POUNDS PER SQUARE INCH FOR FROM ABOUT 4-60 MINUTES, ALL SAID PERCENTAGES BEING BY WEIGHT OF SAID LIGNOCELLULOSE.
References Cited (Backward Citations)
CA463894A
Cited
GB190217299A
Cited
US1832807A
Cited
US1802715A
Cited
US1923756A
Cited
US1892409A
Cited
US2033411A
Cited
US2041120A
Cited
US2247207A
Cited
US2303345A
Cited
US2553412A
Cited
US2490078A
Cited
US2486601A
Cited
GB657812A
Cited
US2552597A
Cited
US2692206A
Cited
US2706160A
Cited
US2708637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |