Patents by Inventor John P. Farewell

John P. Farewell 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).

  • Process for surface sizing paper or paperboard
    Patent number: 5591489
    Abstract: This invention provides a process for surface sizing paper or paperboard involving applying a surface sizing composition containing a mixture of starch and a surfactantless stable vinyl polymer microemulsion, followed by drying. The vinyl polymer microemulsion is prepared by emulsion polymerization of a styrene or styrene containing organic group with a C.sub.2 -C.sub.8 acrylic or methacrylic ester utilizing as the sole emulsifying agent a low molecular weight alkali soluble, acid containing copolymer.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: January 7, 1997
    Assignee: Sequa Chemicals, Inc.
    Inventors: Louis R. Dragner, John P. Farewell
  • Stabilization of rosin dispersions with low molecular weight non-ionic polymers
    Patent number: 4328141
    Abstract: Low molecular weight, non-ionic copolymers of acrylamide and a monomer selected from the group consisting of styrene, alkyl (C.sub.4 -C.sub.24) substituted acrylamides and ethylene provide improved mechanical and heat stability to colloidal aqueous rosin dispersions.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: May 4, 1982
    Assignee: American Cyanamid Company
    Inventors: John P. Farewell, David W. Lipp