Patents by Inventor Arne Johan Arthur Asplund

Arne Johan Arthur Asplund 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).

  • Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle
    Patent number: 4030969
    Abstract: A stream of disintegrated fibrous cellulosic pulp material and steam under pressure is subjected to an instantaneous pressure reduction as said stream and steam pass through a throttling nozzle, in a throttling zone, wherein a liquid solution of a bleaching agent is admixed with said stream and which stream, admixed with bleaching agent, is then passed into an expansion zone ahead of the throttling nozzle resulting in a uniform dispersion of the bleaching agent into the fibers in the stream of fibrous cellulosic pulp material.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: June 21, 1977
    Assignee: Defibrator AB
    Inventors: Arne Johan Arthur Asplund, Rolf Bertil Reinhall, Per Johan Ingemar Ahrel