US2547014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating black grease and product thereof
Assignee: Trendex Co
•
Filing: 1949-03-02
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Granted: 1951-04-03
•
Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:05
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/04; C11C3/10; C11C3/12; C11C3/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN A METHOD OF TREATING BLACK GREASE, THE IMPROVEMENT WHICH COMPRISES PLACING SAID BLACK GREASE IN A VESSEL, HEATING THE SAME TO CAUSE ESTERIFICATION OF DIGLYCERIDES AND THE LIKE, REMOVING WATER THEREFROM, ADDING A NICKEL CATALYST AND THEREAFTER SUBJECTING THE SAME TO THE ACTION OF HYDROGEN AT A SUFFICIENTLY HIGH TEMPERATURE TO EFFECT HYDROGENATION.
Claim 2
Dependent Claim
54 words
IN A METHOD OF TREATING BLACK GREASE, THE IMPROVEMENT WHICH COMPRISES PLACING SAID BLACK GREASE IN A VESSEL, HEATING THE SAME TO CAUSE ESTERIFICATION OF DIGLYCERIDES AND THE LIKE, REMOVING WATER THEREFROM, ADDING A NICKEL CATALYST AND THEREAFTER SUBJECTING THE SAME TO THE ACTION OF HYDROGEN AT A SUFFICIENTLY HIGH TEMPERATURE TO EFFECT HYDROGENATION.
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |