Patents by Inventor Josef Reisner

Josef Reisner 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).

  • Process for the isolation of monochloroacetaldehyde
    Patent number: 4311563
    Abstract: The invention relates to a process for the isolation of chloroacetaldehyde which is obtained as a by-product during the synthesis of acetaldehyde from ethylene and air in an aqueous palladium/cupric chloride solution by the 2-stage process. The mixture to be worked-up to chloroacetaldehyde is taken from the acetaldehyde distillation column and transferred to a distillation and extraction system, where it is fractionally condensed. The chloroacetaldehyde-containing fraction is extracted with water and the aqueous extract is subjected to purification distillation.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: January 19, 1982
    Assignee: Wacker-Chemie GmbH
    Inventors: Werner Opavsky, Josef Reisner, Alois Maier
  • Process for separating acetaldehyde from mixtures with chloroform, methylene chloride and chlorofuran
    Patent number: 4306092
    Abstract: The invention provides a process by which acetaldehyde can be separated off from mixtures with chloroform, methylene chloride and chlorofuran. In this process, the aldehyde is separated off by adding water to separate the mixture into an aldehyde-containing phase and a phase comprising chloroform, methylene chloride and chlorofuran.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: December 15, 1981
    Assignee: Wacker-Chemie GmbH
    Inventors: Werner Opavsky, Josef Reisner