US3340181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage hydrotreatment for white oil manufacture
Assignee: Chevron USA Inc
•
Filing: 1965-08-05
•
Granted: 1967-09-05
•
Expires: 1985-08-05
Abstract
No abstract record available.
Inventors
- 👤 Monty L Diringer
- 👤 Chauncey R Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:54
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04; C10G65/08; C10G2400/00; C10G2400/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PRODUCING COLORLESS OIL WHICH COMPRISES PROVIDING A HYDROCARBON OIL FEED CONSISTING ESSENTIALLY OF REFINED LUBE OIL HAVING AN UNSULFONATED RESIDUE OF AT LEAST 75%, PASSING SAID OIL AND HYDROGEN AT ELEVATED PRESSURE THROUGH A REACTION ZONE TO CONTACT THEREIN A SULFACTIVE HYDROGENATION CATALYST HAVING DENITRIFICATION ACTIVITY AT TEMPERATURES MAINTAINED IN THE RANGE 600900*F. UNTIL AROMATICS AND SULFUR AND NITROGEN COMPOUNDS ARE ESSENTIALLY ELIMINATED, RECOVERING A HYDROFINED OIL HAVING AN UNSULFONATED RESIDUE OF AT LEAST 98%, PASSING SAID HYDROFINED OIL AND HYDROGEN AT ELEVATED PRESSURE
Claim 2
Dependent Claim
87 words
A PROCESS FOR PRODUCING COLORLESS OIL WHICH COMPRISES PROVIDING A HYDROCARBON OIL FEED CONSISTING ESSENTIALLY OF REFINED LUBE OIL HAVING AN UNSULFONATED RESIDUE OF AT LEAST 75%, PASSING SAID OIL AND HYDROGEN AT ELEVATED PRESSURE THROUGH A REACTION ZONE TO CONTACT THEREIN A SULFACTIVE HYDROGENATION CATALYST HAVING DENITRIFICATION ACTIVITY AT TEMPERATURES MAINTAINED IN THE RANGE 600900*F. UNTIL AROMATICS AND SULFUR AND NITROGEN COMPOUNDS ARE ESSENTIALLY ELIMINATED, RECOVERING A HYDROFINED OIL HAVING AN UNSULFONATED RESIDUE OF AT LEAST 98%, PASSING SAID HYDROFINED OIL AND HYDROGEN AT ELEVATED PRESSURE
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |