Patents by Inventor William E. Saver

William E. Saver has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7465387
    Abstract: A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: December 16, 2008
    Assignee: Koppers Delaware, Inc.
    Inventors: Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder, Robert H. Wombles
  • Patent number: 7066997
    Abstract: A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch having a softening point in the range of about 140° C. to 200° C. A mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: June 27, 2006
    Assignee: Koppers Delaware, Inc.
    Inventors: Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder, Robert H. Wombles
  • Patent number: 7033485
    Abstract: Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods uses a feed coal tar pitch having a softening point in the range of 70° C. to 160° C. The methods may be carried out using appropriate conventional distillation equipment, a wiped film evaporator, or a thin film evaporator.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 25, 2006
    Assignee: Koppers Industries of Delaware, Inc.
    Inventors: William E. Saver, E. Ronald McHenry
  • Publication number: 20040168612
    Abstract: A method of making a high softening point coal tar pitch using high efficiency evaporative distillation, as well as the uses and applications of such pitch. According to the method, a feed coal tar pitch having a softening point in the range of 70° C. to 160° C. is fed into a processing vessel wherein the processing vessel is heated to a temperature in the range of 300° C. to 450° C. and wherein a pressure inside the processing vessel is in the range of 5 Torr or less. An output coal tar pitch is withdrawn from the processing vessel. The output coal tar pitch has a softening point in the range of 140° C. to 300° C. and has less than 5% mesophase.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 2, 2004
    Inventor: William E Saver
  • Publication number: 20020185411
    Abstract: Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods uses a feed coal tar pitch having a softening point in the range of 70° C. to 160° C. The methods may be carried out using appropriate conventional distillation equipment, a wiped film evaporator, or a thin film evaporator.
    Type: Application
    Filed: May 11, 2001
    Publication date: December 12, 2002
    Inventors: William E. Saver, E. Ronald McHenry
  • Patent number: 5746906
    Abstract: A coal tar pitch/petroleum pitch blend is disclosed together with a method of making the same. In accordance with the invention, a crude coal tar material is selected according to specific properties including QI, specific gravity, water and ash content. A petroleum pitch material is also selected according to its softening point, QI, coking value and sulfur content. The coal tar pitch is distilled to a uncharacteristically high softening point which is then mixed with the petroleum pitch to a desired softening end point. The material retains significant QI and coking value characteristics of pure coal tar pitch particularly for use in Soderberg-type anodes for aluminum smelting as well as electric arc furnace electrodes. PAH emissions, and more specifically B(a)P equivalent emissions, are all reduced by approximately 40%.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: May 5, 1998
    Assignee: Koppers Industries, Inc.
    Inventors: E. Ronald McHenry, William E. Saver