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Class Information
Number: 208/42
Name: Mineral oils: processes and products > Asphalts, tars, pitches and resins; making, treating and recovery > By distillation > Tar feed
Description: Processes wherein material distilled is a tar.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7481908 |
System and a process for obtaining high purity phenanthrene from phenanthrene enriched coal tar fraction |
Jan. 27, 2009 |
| 7465387 |
Coal tar and hydrocarbon mixture pitch and the preparation and use thereof |
Dec. 16, 2008 |
| 7341656 |
Continuous oxidation and distillation process of heavier hydrocarbon materials |
Mar. 11, 2008 |
| 7220348 |
Method of producing high softening point pitch |
May. 22, 2007 |
| 7066997 |
Coal tar and hydrocarbon mixture pitch and the preparation and use thereof |
Jun. 27, 2006 |
| 7033485 |
Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process |
Apr. 25, 2006 |
| 6464856 |
Separation of tars, oils and inorganic constituents from oil bearing sands or shales |
Oct. 15, 2002 |
| 6352637 |
High coking value pitch |
Mar. 5, 2002 |
| 6245216 |
Method for fluidizing tars |
Jun. 12, 2001 |
| 5843298 |
Method of production of solids-free coal tar pitch |
Dec. 1, 1998 |
| 5795464 |
Conversion of the organic component from tar sands to lower boiling products |
Aug. 18, 1998 |
| 5746906 |
Coal tar pitch blend having low polycyclic aromatic hydrocarbon content and method of making thereof |
May. 5, 1998 |
| 5534134 |
Low PAH pitch and process for same |
Jul. 9, 1996 |
| 5507938 |
Flash thermocracking of tar or pitch |
Apr. 16, 1996 |
| 5326457 |
Process for making carbon electrode impregnating pitch from coal tar |
Jul. 5, 1994 |
| 5314609 |
Process for preparing debenzolized tar and low-benzene centrifuged tar sludge |
May. 24, 1994 |
| 5266184 |
Process for increasing pitch yield from coal tar |
Nov. 30, 1993 |
| 5128021 |
Pitch from coal tar pitch, method of its production, as well as application of such pitch material |
Jul. 7, 1992 |
| 5120424 |
Binder pitch for an electrode and process for its manufacture |
Jun. 9, 1992 |
| 4997542 |
Impregnation pitch with improved filterability and process for its manufacture |
Mar. 5, 1991 |
| 4986895 |
Process for treating coal tar or coal tar pitch |
Jan. 22, 1991 |
| 4874502 |
Method of purifying coal tars for use in the production of carbon products |
Oct. 17, 1989 |
| 4664774 |
Low solids content, coal tar based impregnating pitch |
May. 12, 1987 |
| 4640761 |
Process for preparing pitch |
Feb. 3, 1987 |
| 4404114 |
Acrylate/silicate corrosion inhibitor |
Sep. 13, 1983 |
| 4349418 |
Production of methylnaphthalenes and tar bases including indole |
Sep. 14, 1982 |
| 4219405 |
Method of continuously producing coke |
Aug. 26, 1980 |
| 4199434 |
Feedstock treatment |
Apr. 22, 1980 |
| 4032430 |
Process for producing carbon fibers from mesophase pitch |
Jun. 28, 1977 |
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