US3864097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting cellulose
Assignee: Universal Oil Products Co
•
Filing: 1973-01-15
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Granted: 1975-02-04
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Expires: 1993-01-15
Abstract
Abstract A process for converting cellulose to a normally liquid oil, which includes contacting cellulose with water, a reducing gas and a catalytic compound containing a sulfur component and an alkali metal or ammonium ion component at particular conditions of temperature and pressure to insure a liquid water phase at conversion conditions employed. The reducing gas may be carbon monoxide, hydrogen, or a mixture thereof.
Inventors
- 👤 Peter Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/02; C10G; C10G1/00; C10G1/08; C10G1/083; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y10; Y10S; Y10S423/00; Y10S423/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
12 words
A process according to claim 1 wherein said reducing gas comprises hydrogen.
Claim 2
Dependent Claim
13 words
A process according to claim 1 wherein said reducing gas comprises carbon monoxide.
Claim 3
Dependent Claim
15 words
A process according to cLaim 1 wherein said catalytic compound is an alkali metal sulfide.
Claim 4
Dependent Claim
15 words
A process according to claim 1 wherein said catalytic compound is an alkali metal sulfite.
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein said catalytic compound is an alkali metal thiosulfate.
Claim 6
Dependent Claim
16 words
A process according to claim 1 wherein said alkali metal is selected from sodium and potassium.
Claim 7
Dependent Claim
20 words
A process according to claim 1 wherein said catalytic compound is selected from ammonium sulfide, ammonium sulfite and ammonium thiosulfate.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |