Patents Assigned to ZT Corporation
  • Rust, corrosion, and scale remover
    Patent number: 5468303
    Abstract: A rust, corrosion, and scale removing composition is provided. It comprises an additive concentrate and water. The additive concentrate preferably consists of, on a parts by weight basis, 1.5 to 5 parts glycolic acid, 0.2 to 1 parts tetrasodium salt of ethylenediaminetetraacetic acid, 2 to 6 parts citric acid, and 1 to 3 parts trisodium citrate dihydrate.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: November 21, 1995
    Assignee: ZT Corporation
    Inventor: Glenn C. Thomas, Sr.