Patents by Inventor Hilmar R. Nielsen

Hilmar R. Nielsen 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).

  • Impregnating composition, a process for its preparation and products prepared by using the composition
    Patent number: 4351669
    Abstract: Impregnating composition containing the components:(a) an alkaline extract of a lignocellulosic material;(b) a high molecular carbohydrate; and(c) an alkali or alkaline earth metal silicate or colloidal silica; a process for its preparation; and processes for the preparation of products by using the impregnating composition.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: September 28, 1982
    Inventor: Hilmar R. Nielsen