US2622112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lubricating oil
Assignee: —
•
Filing: —
•
Granted: 1952-12-16
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/067; C07C15/08; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C10; C10G; C10G2300/00; C10G2300/20; C10G2300/30; C10G2300/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF PRODUCING AROMATIC HYDROCARBONS USEFUL A LUBRICATING OIL FROM A MIXTURE OF AROMATIC HYDROCARBONS BOILING IN THE KEROSENE RANGE AND A MIXTURE OF PREDOMINANTLY STRAIGHT CHAIN OLEFINS HAVING 8 TO 18 CARBON ATOMS PER MOLECULE, WHICH COMPRISES SEPARATING SAID AROMATIC MIXTURE INTO TWO FRACTIONS, ONE OF WHICH BOILS HIGHER THAN THE OTHER, SEPARATING SAID OLEFIN MIXTURE INTO A LOWER BOILING FRACTION AND A HIGHER BOILING FRACTION, ALKYLATING SAID HIGHER BOILING FRACTION OF THE AROMATIC MIXTURE WITH THE LOWER BOILING FRACTION OF SAID OLEFIN MIXTURE, ALKYLATING THE LOWER BOILING FRACTION OF THE AROMATIC MIXTURE WITH SAID HIGHER BOILING FRACTION OF THE OLEFIN MIXTURE, SAID BLENDING ALKYLATION PRODUCTS OF THE TWO SAID ALKLATIONS.
Claim 2
Independent Claim
113 words
A METHOD OF PRODUCING AROMATIC HYDROCARBONS USEFUL A LUBRICATING OIL FROM A MIXTURE OF AROMATIC HYDROCARBONS BOILING IN THE KEROSENE RANGE AND A MIXTURE OF PREDOMINANTLY STRAIGHT CHAIN OLEFINS HAVING 8 TO 18 CARBON ATOMS PER MOLECULE, WHICH COMPRISES SEPARATING SAID AROMATIC MIXTURE INTO TWO FRACTIONS, ONE OF WHICH BOILS HIGHER THAN THE OTHER, SEPARATING SAID OLEFIN MIXTURE INTO A LOWER BOILING FRACTION AND A HIGHER BOILING FRACTION, ALKYLATING SAID HIGHER BOILING FRACTION OF THE AROMATIC MIXTURE WITH THE LOWER BOILING FRACTION OF SAID OLEFIN MIXTURE, ALKYLATING THE LOWER BOILING FRACTION OF THE AROMATIC MIXTURE WITH SAID HIGHER BOILING FRACTION OF THE OLEFIN MIXTURE, SAID BLENDING ALKYLATION PRODUCTS OF THE TWO SAID ALKLATIONS.
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |