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Class Information
Number: 208/43
Name: Mineral oils: processes and products > Asphalts, tars, pitches and resins; making, treating and recovery > By distillation > Tar feed > By contact with hot gases
Description: Processes wherein the tar is contacted by high temperature gas during distillation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7341656 |
Continuous oxidation and distillation process of heavier hydrocarbon materials |
Mar. 11, 2008 |
| 7220348 |
Method of producing high softening point pitch |
May. 22, 2007 |
| 7018526 |
Carbonized pitch moldings prepared from synthetic mesophase pitch and heat-soaked isotropic pitch |
Mar. 28, 2006 |
| 6605208 |
Process for reduction of emissions in asphalt production |
Aug. 12, 2003 |
| 6194344 |
Process for preparing carbonaceous material carrying ultrafinely dispersed metal |
Feb. 27, 2001 |
| 6036843 |
Method for reducing hydrogen chloride emissions from an asphalt air-blowing process |
Mar. 14, 2000 |
| 5922189 |
Process to refine petroleum residues and sludges into asphalt and/or other petroleum products |
Jul. 13, 1999 |
| 5507938 |
Flash thermocracking of tar or pitch |
Apr. 16, 1996 |
| 5100536 |
Method of processing substances |
Mar. 31, 1992 |
| 5091072 |
Process for preparing pitches |
Feb. 25, 1992 |
| 4882139 |
Improved production of carbon fibers |
Nov. 21, 1989 |
| 4879369 |
Method of removing lignin from tall oil |
Nov. 7, 1989 |
| 4664774 |
Low solids content, coal tar based impregnating pitch |
May. 12, 1987 |
| 4565622 |
Method of liquefying brown coal |
Jan. 21, 1986 |
| 4551225 |
High anisotropic pitch |
Nov. 5, 1985 |
| 4075083 |
Method for destructive distillation of hydrocarbonaceous materials |
Feb. 21, 1978 |
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