Patents by Inventor Ghazi B. Dickakian

Ghazi B. Dickakian 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).

  • High anisotropic pitch
    Patent number: 4551225
    Abstract: An improved process for preparing an optically anisotropic pitch which comprises heating a pitch feed material at a temperature within the range of about 350.degree. C. to 450.degree. C. while passing an inert gas therethrough at a rate of at least 2.5 SCFH/lb of pitch feed material and agitating said pitch feed material at a stirrer rate of from about 500 to 600 rpm to obtain an essentially 100% mesophase pitch product suitable for carbon production.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: November 5, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ghazi B. Dickakian
  • Pitch for direct spinning into carbon fibers
    Patent number: 4548703
    Abstract: A pitch suitable for carbon fiber manufacture features a pitch having a weight content of between 80 and 100 percent toluene insolubles. The pitch is derived from a deasphaltenated middle fraction of a feedstock. The pitch is characterized as being relatively free of impurities and ash. The pitch can be spun directly into carbon fibers.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: October 22, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ghazi B. Dickakian
  • Pitch for direct spinning into carbon fibers derived from a steam cracker tar feedstock
    Patent number: 4548704
    Abstract: A pitch suitable for carbon fiber manufacture features a pitch having a weight content of between 80 and 100 percent toluene insolubles and greater than about 10 percent quinoline insolubles. The pitch is derived from a deasphaltenated middle fraction of a feedstock. The pitch is characterized as being relatively free of impurities and ash. The pitch can be spun directly into carbon fibers.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: October 22, 1985
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Ghazi B. Dickakian
  • Process for preparing an anisotropic aromatic pitch
    Patent number: 4522701
    Abstract: A process is described for preparing a highly anisotropic aromatic pitch characterized by a high content of toluene insolubles, a low melting point, a low viscosity, and low content of quinoline insolubles by heat soaking a petroleum pitch derived from catalytic cracking residue at high temperatures for a short time followed by stripping the distillable oils. The pitch made in accordance with this process will yield a highly anisotropic carbon on carbonization at elevated temperatures.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: June 11, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ghazi B. Dickakian