Patent US2919245A successfully refreshed from Google Patents.
US2919245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of organic materials
Assignee: KERR MC GEE OIL IND Inc
•
Filing: 1956-09-04
•
Granted: 1959-12-29
•
Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 James D Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:12
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/07; C10G29/00; C10G29/06; C10G29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR REDUCING THE TRACE METAL CONTENT OF HIGH MOLECULAR WEIGHT HYDROCARBON AND OILS COMPRISING THE STEPS OF CONTACTING AT LEAST ONE OF SUCH MATERIALS CONTAINING A TRACE METAL WITH A TREATING AGENT CONSISTING ESSENTIALLY OF AT LEAST ONE FLUOROPHOSPHORIC ACID SELECTED FROM THE CLASS CONSISTING OF MONOFLUOROPHOSPHORIC ACID, DIFLUOROPHOSPHORIC ACID AND HEXAFLUOROPHOSPHORIC ACID, THE MATERIAL BEING CONTACTED WITH THE TREATING AGENT AT AN ELEVATED TEMPERATURE ABOVE 70*F. AND UP TO THE REFLUX TEMPERATURE OVER A PERIOD OF TIME SUFFICIENT TO REDUCE THE TRACE METAL CONTENT, FORMING A SLUDGE LAYER AND A LAYER OF TREATED MATERIAL, AND SEPARATING THE LAYERS THUS FORMED.
Claim 2
Dependent Claim
103 words
A PROCESS FOR REDUCING THE TRACE METAL CONTENT OF HIGH MOLECULAR WEIGHT HYDROCARBON AND OILS COMPRISING THE STEPS OF CONTACTING AT LEAST ONE OF SUCH MATERIALS CONTAINING A TRACE METAL WITH A TREATING AGENT CONSISTING ESSENTIALLY OF AT LEAST ONE FLUOROPHOSPHORIC ACID SELECTED FROM THE CLASS CONSISTING OF MONOFLUOROPHOSPHORIC ACID, DIFLUOROPHOSPHORIC ACID AND HEXAFLUOROPHOSPHORIC ACID, THE MATERIAL BEING CONTACTED WITH THE TREATING AGENT AT AN ELEVATED TEMPERATURE ABOVE 70*F. AND UP TO THE REFLUX TEMPERATURE OVER A PERIOD OF TIME SUFFICIENT TO REDUCE THE TRACE METAL CONTENT, FORMING A SLUDGE LAYER AND A LAYER OF TREATED MATERIAL, AND SEPARATING THE LAYERS THUS FORMED.
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |