Patents by Inventor Borje Ingemar Fredriksson

Borje Ingemar Fredriksson 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).

  • Device for supplying treatment agent to ligno-cellulose containing material
    Patent number: 3942729
    Abstract: Meterial to be ground, such as ligno-cellulose containing material, is fed-in centrally between a pair of juxtaposed relatively rotatable discs. The material being ground moves outwardly towards a discharge point adjacent the periphery of the discs, and a fluidized treatment agent is supplied to the material as it is discharged from between the discs, the treatment agent issuing from an array of circumferentially spaced nozzles which surround the periphery of the discs.
    Type: Grant
    Filed: September 5, 1973
    Date of Patent: March 9, 1976
    Assignee: SCA Projekt Aktiebolag
    Inventor: Borje Ingemar Fredriksson