Patents by Inventor Alan Robert Procter

Alan Robert Procter 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).

  • Alkaline pulping of lignocellulosic material with amine pretreatment
    Patent number: 4091749
    Abstract: A lignocellulosic material, such as wood chips, is pretreated with an aqueous solution containing from 0.1 to 10% by weight of a water soluble lower aliphatic amine selected from monoethanolamine, methylamine and dimethylamine, at elevated temperature and pressure in a closed vessel. This pretreated material is then subjected to conventional soda or two-stage soda-oxygen pulping.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: May 30, 1978
    Assignee: MacMillan Bloedel Limited
    Inventors: Alan Robert Procter, Wayne Ming Chow