Patents by Inventor Arthur Herbert Guitard

Arthur Herbert Guitard 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).

  • Paper with synergistic dry strength additives and process therefor
    Patent number: 4036682
    Abstract: Paper of high dry strength is produced by adding to a solution of fibers from 0.1 to 2% of a cationic resin and from 0.1 to 2% of an anionic resin. Proportion of cationic to anionic resin is in the range of 99:1 to 50:50. The preferred cationic resin is a condensation product of acetone, formaldehyde and polyalkylene polyamine which is prepared in presence of a catalytic amount of a strong inorganic acid and has a mol ratio of 1:3:0.5, respectively. The anionic resin is a copolymer of acrylamide and maleic acid or its anhydride having a mol ratio of from 90:10 to 98:2.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: July 19, 1977
    Assignee: Borden, Inc.
    Inventors: Lock-Lim Chan, Arthur Herbert Guitard
  • Dry strength paper and process therefor
    Patent number: 4007084
    Abstract: Paper of high dry strength is produced by forming an aqueous solution of cellulose fibers and adding thereto a polymeric product of acetone, formaldehyde and polyethylene polyamine, which product is prepared at reflux temperature in presence of a catalytic amount of a strong inorganic acid and has a mol ratio of 1:3:0.5, respectively.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: February 8, 1977
    Assignee: Borden Products Limited
    Inventors: Lock-Lim Chan, Arthur Herbert Guitard