Patents by Inventor Stig A. Dahlgren

Stig A. Dahlgren 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 preparation of furfural
    Patent number: 4181667
    Abstract: The invention relates to a process for the preparation of furfural from a carbohydrate, comprising subjecting a lactose-containing material to steam distillation, whereby at least part of the lactose present is converted to furfural.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: January 1, 1980
    Assignee: Carbos, AG
    Inventor: Stig A. Dahlgren
  • Process for the conversion of lactose into monosaccharides and derivatives thereof
    Patent number: 4156076
    Abstract: The invention relates to a process for the conversion of lactose into useful monocarbohydrates, comprising the steps of oxidatively hydrolyzing a lactose solution to form galactose and gluconic acid, and separating these two constituents.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: May 22, 1979
    Assignee: Carbos AG
    Inventor: Stig A. Dahlgren