US2767131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of oxidation resistant
Assignee: —
•
Filing: —
•
Granted: 1956-10-16
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Expires: 1973-10-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:43
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/02; C10M105/06; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PRODUCING A HIGHLY STABLE LUBRICATING OIL WHICH COMPRISES SEPARATING BY ADSORPTION ON A SOLID ADSORBENT A LUBRICATING OIL INTO (A) A FRACTION CONSISTING PREDOMINANTLY OF SATURATED HYDROCARBONS, (B) A FRACTION CONSISTING PREDOMINANTLY OF MONONUCLEAR AROMATIC HYDROCARBONS, AND (C) A FRACTION CONSISTING PREDOMINANTLY OF POLYNUCLEAR AROMATIC HYDROCARBONS, HYDROGENATING FRACTION (B) TO PRODUCE A FRACTION (D) CONSISTING PREDOMINANTLY OF SATURATED HYDROCARBONS, AND BLENDING FRACTIONS (A), (C) AND (D) IN A RATIO OF SATURATED HYDROCARBONS TO POLYNUCLEAR AROMATIC HYDROCARBONS OF FROM ABOUT 95:5 TO 50:50 TO PRODUCE A HIGHLY STABLE LUBRICATING OIL.
Claim 2
Independent Claim
92 words
A METHOD OF PRODUCING A HIGHLY STABLE LUBRICATING OIL WHICH COMPRISES SEPARATING BY ADSORPTION ON A SOLID ADSORBENT A LUBRICATING OIL INTO (A) A FRACTION CONSISTING PREDOMINANTLY OF SATURATED HYDROCARBONS, (B) A FRACTION CONSISTING PREDOMINANTLY OF MONONUCLEAR AROMATIC HYDROCARBONS, AND (C) A FRACTION CONSISTING PREDOMINANTLY OF POLYNUCLEAR AROMATIC HYDROCARBONS, HYDROGENATING FRACTION (B) TO PRODUCE A FRACTION (D) CONSISTING PREDOMINANTLY OF SATURATED HYDROCARBONS, AND BLENDING FRACTIONS (A), (C) AND (D) IN A RATIO OF SATURATED HYDROCARBONS TO POLYNUCLEAR AROMATIC HYDROCARBONS OF FROM ABOUT 95:5 TO 50:50 TO PRODUCE A HIGHLY STABLE LUBRICATING OIL.
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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |