US2551579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of valuable organic compounds from plant material
Assignee: Individual
•
Filing: 1944-06-30
•
Granted: 1951-05-08
•
Expires: 1964-06-30
Abstract
No abstract record available.
Inventors
- 👤 Berl Walter George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:16
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02; Y; Y10; Y10S; Y10S423/00; Y10S423/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR MAKING A SEMI-LIQUID BITUMENLIKE PARTLY ALIPHATIC AND PARTLY CYCLIC COMPOUND COMPRISING A MAJOR PORTION OF CARBON AND MINOR PORTIONS OF NITROGEN, HYDROGEN AND OXYGEN, SAID PROCESS COMPRISING HEATING PLANT MATERIAL CONTAINING BOTH CARBOHYDRATES AND LIGNIN IN A CLOSED SYSTEM TO A TEMPERATURE BETWEEN 150* C. AND
Claim 2
Dependent Claim
49 words
A PROCESS FOR MAKING A SEMI-LIQUID BITUMENLIKE PARTLY ALIPHATIC AND PARTLY CYCLIC COMPOUND COMPRISING A MAJOR PORTION OF CARBON AND MINOR PORTIONS OF NITROGEN, HYDROGEN AND OXYGEN, SAID PROCESS COMPRISING HEATING PLANT MATERIAL CONTAINING BOTH CARBOHYDRATES AND LIGNIN IN A CLOSED SYSTEM TO A TEMPERATURE BETWEEN 150* C. AND
References Cited (Backward Citations)
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Cited
US1764249A
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US1936819A
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US2177557A
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US2220624A
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US2328749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |