Patents by Inventor G. Fred Lauman

G. Fred Lauman 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).

  • Cavitation-resistant polymer and coating
    Patent number: 4847122
    Abstract: A cavitation resistant polymer and coating are provided by curing a composition containing from about 24 to 48 wt. % of a liquid epoxy resin, from about 24 to 48 wt. % of a blocked isocyanate prepolymer, from about 4.2 to 12 wt. % of a rheological additive at least 65% of which is an amorphous silica flatting agent, from about 10 to 14 wt. % of a curing agent, from about 1 to 4 wt. % of a plasticizer, and from about 0.1 to 0.6 wt. % of a silane. The composition can contain pigments, fillers and other auxillary agents.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: July 11, 1989
    Assignee: Palmer International, Inc.
    Inventors: Daniel Goldberg, G. Fred Lauman
  • Abrasion-resistant polymer composition and coating
    Patent number: 4753826
    Abstract: An abrasion resistant polymer and coating composition comprising from about 24 to 48 wt. % of a liquid epoxy resin, from about 24 to 48 wt. % of a blocked isocyanate prepolymer, from about 4.2 to 12 wt. % of a rheological additive, from about 10 to 14 wt. % of a curing agent, from about 1 to 4 wt. % of a plasticizer, and from about 0.1 to 0.6 wt. % of a silane. The coating composition is especially effective in resisting abrasion from solids entrained in fluids in fluid flow environments.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: June 28, 1988
    Assignee: Palmer International, Inc.
    Inventor: G. Fred Lauman