Patents by Inventor Jan Hehlmann

Jan Hehlmann 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).

  • Mass exchanger with packaging
    Patent number: 4290980
    Abstract: A mass exchanger with a cellular packing in form of checkerworks forming cells bent in the lower part forming the gaps. The bends of the cells are of radial or skew type. The checkerworks are formed by single or duplex walls. Alternate checkerworks are turned in relation to each other at about an angle of from 0.degree. to 90.degree., an advantageous angle is 45.degree..
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: September 22, 1981
    Assignee: Politechnika Slaska im. Wincentego Pstrowdkiego
    Inventors: Jerzy Pikon, Jan Hehlmann