Patents by Inventor Carl A. Sjodin

Carl A. Sjodin 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 recovering environment-detrimental material
    Patent number: 4541846
    Abstract: In a method of in situ recovering and rendering harmless material detrimental to environment, for example asbestos and the like, the material is transported together with ambient air by means of vacuum from the place in situ to a space, in which the material is separated from the air, which is led off upward, filtered and removed. The material is moved from the space and sprayed and/or injected with a substance permanently binding the material, and the material thus bound in the form of manageable units is removed intermittently or continuously from the space.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: September 17, 1985
    Assignee: Armerad Betong Vagforbattringar Aktiebolag
    Inventor: Carl A. Sjodin