Patents by Inventor John D. Derr

John D. Derr 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).

  • Material for use as soil stabilizer and as soil substitute
    Patent number: 5466288
    Abstract: A soil substitute material includes from about 2 to about 9 parts by weight of crushed brick; from about 5 to about 25 parts by weight of a filler material; from about 60 to about 90 parts by weight of raw clay; and, from about 0 to about 3 parts by weight of a hydrating material. The material is compacted at from about 3500 to about 5000 pounds per square inch. A method of preparing a soil substitute includes admixing the components with from about 5 to about 18 parts by weight of water and compressing the hydrated mixture at from about 3500 to about 5000 pounds per square inch.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: November 14, 1995
    Assignee: Wessco, Inc.
    Inventor: John D. Derr
  • Material for use as soil stabilizer and as soil substitute
    Patent number: 5397392
    Abstract: A soil substitute material includes from about 2 to about 9 parts by weight of crushed brick; from about 5 to about 25 parts by weight of a filler material; from about 60 to about 90 parts by weight of raw clay; and, from about 0 to about 3 parts by weight of a hydrating material. The material is compacted at from about 3500 to about 5000 pounds per square inch. A method of preparing a soil substitute includes admixing the components with from about 5 to about 18 parts by weight of water and compressing the hydrated mixture at from about 3500 to about 5000 pounds per square inch.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: March 14, 1995
    Assignee: Wessco, Inc.
    Inventor: John D. Derr