Patents by Inventor Bing W. Hum

Bing W. Hum 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 making artificial rocks
    Patent number: 4043826
    Abstract: A light-weight simulated rock is made by molding a composition comprising cement, a light-weight filler, water, a curing agent for the cement and an acrylic resin latex in a flexible mold and thereafter nonuniformly coloring the hardened rock body so formed with cement dyes and/or pigments.
    Type: Grant
    Filed: November 22, 1974
    Date of Patent: August 23, 1977
    Inventor: Bing W. Hum