Patents Assigned to Biofoam Industries, Inc.
  • Process of forming a cellulose product having a high content of silicate cross-linked cellulose polymer
    Patent number: 5366594
    Abstract: Plant wastes such as rice hulls which are high in cellulose and silica are converted into a slurry of water and a silicate cross-linked cellulose poller by digestion under heat and pressure in the presence of sodium ions and a sulfite. The slurry is treated with conventional foaming agents to form a foamed product expanded in volume which may be formed into any desired shape or size by extrusion, molding or casting. The composition of the product of the conversion process is represented by the formula C.sub.7 H.sub.12 O.sub.7 (OCH.sub.3.2 NaHSiO.sub.3).
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: November 22, 1994
    Assignee: Biofoam Industries, Inc.
    Inventor: Charles Capps
  • Process of forming an expanded lightweight foamed product from rice hulls
    Patent number: 5133834
    Abstract: Plant waste products high in cellulose and silica, i.e. rice hulls, are converted into a slurry of water and a silicate cross-linked cellulose polymer by digestion under heat and pressure in the presence of sodium ions and a sulfite. The slurry is treated with conventional foaming agents to form a formed product expanded in volume. The foamed product may be formed into any desired shape or size by extrusion, molding or casting.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: July 28, 1992
    Assignee: Biofoam Industries, Inc.
    Inventor: Charles L. Capps