US2776276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin hydrogenation
Assignee: Hercules Powder Co
•
Filing: 1953-08-18
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Granted: 1957-01-01
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Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Glasebrook
- 👤 Alfred N Hoffmann
- 👤 James B Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:11
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS WHICH COMPRISES SUBJECTING A MATERIAL CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ROSIN ACIDS, ESTERS OF ROSIN ACIDS, ALCOHOLS PRODUCED BY THE REDUCTION OF THE CARBOXYL GROUP OF A ROSIN ACID, AND ESTERS OF SAID ALCOHOLS TO TREATMENT WITH HYDROGEN AT A TEMPERATURE OF FROM ABOUT 125*C. TO ABOUT 300*C. AND A PRESSURE OF AT LEAST 3000 P.S.I.G. IN THE PRESENCE OF A NOBLE METAL CATALYST SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, RHODIUM, AND RUTHENIUM AND CONTINUING THE TREATMENT WITH HYDROGEN UNTIL A SUBSTANTIALLY COMPLETELY HYDROGENATED PRODUCT IS PRODUCED.
Claim 2
Dependent Claim
94 words
THE PROCESS WHICH COMPRISES SUBJECTING A MATERIAL CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ROSIN ACIDS, ESTERS OF ROSIN ACIDS, ALCOHOLS PRODUCED BY THE REDUCTION OF THE CARBOXYL GROUP OF A ROSIN ACID, AND ESTERS OF SAID ALCOHOLS TO TREATMENT WITH HYDROGEN AT A TEMPERATURE OF FROM ABOUT 125*C. TO ABOUT 300*C. AND A PRESSURE OF AT LEAST 3000 P.S.I.G. IN THE PRESENCE OF A NOBLE METAL CATALYST SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, RHODIUM, AND RUTHENIUM AND CONTINUING THE TREATMENT WITH HYDROGEN UNTIL A SUBSTANTIALLY COMPLETELY HYDROGENATED PRODUCT IS PRODUCED.
References Cited (Backward Citations)
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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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |