Patents by Inventor Otto Meresz

Otto Meresz 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).

  • Rotary separating and extracting devices
    Patent number: 4098648
    Abstract: A rotary separator, specially adapted for extraction of bituminous materials from tar sands or shale, comprises an inclined vessel having a helical conveyor attached to it, provided with apertures at the radially outer portion of the helical flights. Material introduced at the bottom is conveyed upwardly, and solvent washes downwardly to dissolve out the bituminous material. The apertures in the helix permit downward passage of liquid but prevent substantial downward passage of solids. A solvent recovery vessel is provided for recovering residual solvent from the separated solids.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: July 4, 1978
    Inventors: Philipp Kraemer, Otto Meresz
  • Long chain internally unsaturated alkenes
    Patent number: 4018844
    Abstract: Long chain alkenes are produced by electrolyzing an organic solution containing a mixture of short chain carboxylic acid and a larger chain carboxylic acid, one of which is unsaturated. Many of the products so formed are useful as insect attractants.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: April 19, 1977
    Inventors: Otto Meresz, Cecilia Mozsgai
  • Process for the synthesis of pure isomers of long chain alkenes
    Patent number: 4006065
    Abstract: Long chain alkenes are produced by electrolyzing an organic solution containing a mixture of short chain carboxylic acid and a larger chain carboxylic acid, one of which is unsaturated. Many of the products so formed are useful as insect attractants.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: February 1, 1977
    Inventors: Otto Meresz, Cecilia Mozsgai
  • Insect attractant composition
    Patent number: 3932616
    Abstract: Long chain alkenes are produced by electrolysing an organic solution containing a mixture of short chain carboxylic acid and a larger chain carboxylic acid, one of which is unsaturated. Many of the products so formed are useful as insect attractants.
    Type: Grant
    Filed: June 11, 1973
    Date of Patent: January 13, 1976
    Inventors: Otto Meresz, Cecilia Mozsgai