Patents by Inventor John M. Malek

John M. Malek 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).

  • Separating liquid and solid products of liquefaction of coal or like carbonaceous materials
    Patent number: 4159240
    Abstract: Slurryform products of coal liquefaction are treated with caustic soda in presence of H.sub.2 O in an inline static mixer and then the treated product is separated into a solids fraction and liquid fractions, including liquid hydrocarbons, by gravity settling preferably effected in a multiplate settling separator with a plurality of settling spacings.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: June 26, 1979
    Inventor: John M. Malek
  • Method for separating liquid and solid products of liquefaction of coal or like carbonaceous materials
    Patent number: 4085029
    Abstract: A method of improving the quality of slurry products taken from coal liquefaction reactors comprising subjecting the slurry to treatment with an alkaline compound such as caustic soda in the presence of steam in order to decompose the phenolic and acidic materials present in the slurry, and to also lower the slurry viscosity to allow separation of solid particles by sedimentation.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: April 18, 1978
    Inventor: John M. Malek
  • Process for liquefying carbonaceous materials of high molecular weight and for separating liquefaction products
    Patent number: 4056460
    Abstract: Process characterized by comprising successively a dissolution zone fed with carbonaceous solids and with a solvent, a high pressure hydrogenation zone provided with a source of hydrogen, and a hydrogenation products separation zone, wherein the improvement consists mainly in chemical upgrading of the liquidform products derived from the separation zone, and recycling a part of the upgraded products to the dissolution zone, this recycled part being of either positively acidic or positively basic properties for enhancing the dissolution - decomposition of base-acid structures present in the carbonaceous solid feed.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: November 1, 1977
    Inventor: John M. Malek