US3207802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of coke-oven light oil
Assignee: Air Products and Chemicals Inc
•
Filing: 1960-12-14
•
Granted: 1965-09-21
•
Expires: 1980-12-14
Abstract
No abstract record available.
Inventors
- 👤 John B Maerker
- 👤 Shalit Harold
- 👤 Alvin H Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:12
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/06; C10G35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN THE RECOVERY OF AROMATIC HYDROCARBONS OF THE BENZENE SERIES FROM COKE-OVEN LIGHT OILS, THE METHOD OF REMOVING POLYMERIZABLE IMPURITIES FROM SAID COKE-OVEN LIGHT OILS WHICH COMPRISES DISTILLING THE OIL TO SEPARATE THE SAME INTO (1) A RECOVERED OVERHEAD FRACTION BOILING IN THE RANGE OF UP TO ABOUT 300$F. INCLUDING AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND (2) A RESIDUAL BOTTOMS FRACTION COMPRISING PRIMARY LIGHT OIL MATERIALS BOILING ABOVE 300*F. AND INCLUDING POLYMERIZED COMPONENTS CONTAINED IN THE OIL SUBJECTED TO SUCH DISTILLATION, AND SUBJECTING THE FRESHLY DISTILLED OVERHEAD FRACTION TO HYDRODESULFURIZATION.
Claim 2
Dependent Claim
91 words
IN THE RECOVERY OF AROMATIC HYDROCARBONS OF THE BENZENE SERIES FROM COKE-OVEN LIGHT OILS, THE METHOD OF REMOVING POLYMERIZABLE IMPURITIES FROM SAID COKE-OVEN LIGHT OILS WHICH COMPRISES DISTILLING THE OIL TO SEPARATE THE SAME INTO (1) A RECOVERED OVERHEAD FRACTION BOILING IN THE RANGE OF UP TO ABOUT 300$F. INCLUDING AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND (2) A RESIDUAL BOTTOMS FRACTION COMPRISING PRIMARY LIGHT OIL MATERIALS BOILING ABOVE 300*F. AND INCLUDING POLYMERIZED COMPONENTS CONTAINED IN THE OIL SUBJECTED TO SUCH DISTILLATION, AND SUBJECTING THE FRESHLY DISTILLED OVERHEAD FRACTION TO HYDRODESULFURIZATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |