Patent US3000811A successfully refreshed from Google Patents.
US3000811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion process
Assignee: Universal Oil Products Co
•
Filing: 1958-04-28
•
Granted: 1961-09-19
•
Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Murray
- 👤 Howard A Plagge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:12
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF CONVERTING AN ARSENIC-CONTAINING NAPHTHA DISTILLATE CHARGE WHICH COMPRISES CONTACTING SAID CHARGE, PRIOR TO CONVERSION TREATMENT THEREOF, WITH SULFURIC ACID AT A TEMPERATURE OF FROM ABOUT ATMOSPHERIC TO ABOUT 200*F. TO REMOVE ARSENIC FROM THE CHARGE, SEPARATING THEREFROM A CHARGE FRACTION HAVING AN ARSENIC CONTENT OF LESS THAN 0.05 PART PER MILLION AND LESS THAN THAT OF SAID CHARGE, AND SUBJECTING SAID CHARGE FRACTION TO CONVERSION IN THE PRESENCE OF A CATALYST COMPRISING A NOBLE METAL.
Claim 2
Independent Claim
78 words
THE METHOD OF CONVERTING AN ARSENIC-CONTAINING NAPHTHA DISTILLATE CHARGE WHICH COMPRISES CONTACTING SAID CHARGE, PRIOR TO CONVERSION TREATMENT THEREOF, WITH SULFURIC ACID AT A TEMPERATURE OF FROM ABOUT ATMOSPHERIC TO ABOUT 200*F. TO REMOVE ARSENIC FROM THE CHARGE, SEPARATING THEREFROM A CHARGE FRACTION HAVING AN ARSENIC CONTENT OF LESS THAN 0.05 PART PER MILLION AND LESS THAN THAT OF SAID CHARGE, AND SUBJECTING SAID CHARGE FRACTION TO CONVERSION IN THE PRESENCE OF A CATALYST COMPRISING A NOBLE METAL.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |