Patents by Inventor Roger Logan

Roger Logan 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 preparing rosin esters of improved color
    Patent number: 4585584
    Abstract: Tall oil rosin esters of pentaerythritol prepared in the presence of activated carbon possess an improved, lighter color.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: April 29, 1986
    Assignee: Union Camp Corporation
    Inventors: Robert W. Johnson, Jr., Roger Logan