Patents by Inventor Leonard J. Wood, Jr.

Leonard J. Wood, Jr. 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 sizing paper
    Patent number: 4214948
    Abstract: A size mixture comprising a higher organic ketene dimer and polyoxyalkylene alkyl or alkyl-aryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: July 29, 1980
    Assignee: National Starch and Chemical Corporation
    Inventors: Emil D. Mazzarella, Leonard J. Wood, Jr., Walter Maliczyszyn
  • Method of sizing paper
    Patent number: 4040900
    Abstract: A size mixture comprising a substituted cyclic dicarboxylic acid anhydride and polyoxyalkylene alkyl or alkyl-aryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: August 9, 1977
    Assignee: National Starch and Chemical Corporation
    Inventors: Emil D. Mazzarella, Leonard J. Wood, Jr., Walter Maliczyszyn
  • Method of sizing paper
    Patent number: RE29960
    Abstract: A size mixture comprising a substituted cyclic dicarboxylic acid anhydride and polyoxyalkylene alkyl or alkylaryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: April 10, 1979
    Assignee: National Starch and Chemical Corp.
    Inventors: Emil D. Mazzarella, Leonard J. Wood, Jr., Walter Maliczyszyn