Patents by Inventor Dale Steiner

Dale Steiner 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).

  • Injection moldable biodegradable starch polymer composite
    Patent number: 5162392
    Abstract: An injection moldable biodegradable plastic formed of corn starch and low-density polyethylene. Ethylene acrylic acid co-polymer can be included in proportions ranging from 0-10%, by weight, and sodium hydroxide can be utilized to neutralize the acidic portions of the ethylene acrylic acid co-polymer. When no ethylene acrylic acid co-polymer is utilized, glycerol is added. To improve injection molding characteristics, the ethylene acrylic acid co-polymer and polyethylene are premixed before the addition of corn starch.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 10, 1992
    Assignee: Agri-Tech Industries, Inc.
    Inventors: Richard P. Wool, David C. Schiltz, Dale Steiner