Patents by Inventor Patrick A. Rundhaug

Patrick A. Rundhaug 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).

  • Patent number: 5728236
    Abstract: A chemically derived product that rusts metal instantly upon contacting the surface of a metal and which can be easily and safely used by ornamental metal craftpersons. The chemically derived product is a liquid compound that contains the following constituents: (a) 93.0% by weight of water; (b) up to 5.0% by weight of a copper salt, the copper salt being selected from a copper salt group consisting of copper sulfate, copper nitrate, and copper chloride; and (c) a remaining amount consisting of an acid compound selected from an acid compound group consisting of sulfamic acid, oxalic acid, hydrochloric acid and nitric acid. The liquid compound can be particularly formulated for oxidizing steel or copper and may be produced having a predetermined coloring dye constituent selected from a color dye group consisting of copper, auburn, or gold, if oxidizing steel, or a color dye selected from a color dye group consisting of patina, aqua blue, or green, if oxidizing copper.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: March 17, 1998
    Assignee: Chem-Pro
    Inventor: Patrick A. Rundhaug
  • Patent number: 5534124
    Abstract: An electrochemical process and system for dehalogenating halogenated hydrocarbons. The process facilitates on-site processing and transformation of waste oils, PCB oils in electrical transformers and chlorinated solvents to salts. The system includes a two-piece tubular structure including an electrical insulating member, an electrode member having perforations leading into a hollow vessel portion. The process includes, by example, reacting the halogenated hydrocarbon compound with at least one metal hydroxide selected from a metallic hydroxide group consisting of sodium hydroxide, calcium hydroxide, zinc hydroxide, and potassium hydroxide in the presence of an alcohol selected from an alcohol group consisting of methanol, ethanol, or isopropanol. The tubular structure is inserted into the container and energized by applying a voltage to the electrode member.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: July 9, 1996
    Assignee: Chem-Pro
    Inventor: Patrick A. Rundhaug