Patents by Inventor Daniel C. Roberts

Daniel C. Roberts 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).

  • Fluid well pumping system and method to produce same
    Publication number: 20110114305
    Abstract: An Improved Fluid well pumping system and method to produce the system. According to the system, it relates to ones that provide improved, low cost, efficient and low maintenance pumping systems for obtaining fluid from a source. It is envisioned that the systems will be used for removing oil, water, sludge, gaseous fluids, or leachates from shallow to medium depth wells (0 to 4000 feet depths). However, the invention has application for raising any fluids as needed above ground.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 19, 2011
    Inventors: Daniel C. Roberts, G Ronald Stoughton, James R. Wetzel
  • Compositions for rust treatment
    Patent number: 4724249
    Abstract: The invention is a rust proofing composition containing a copolymer in latex form derived from:(i) vinylidene chloride(ii) vinyl chloride; and(iii) one or more alkyl acrylates and/or alkyl metharcylates having from 1 to 12 carbon atoms is the alkyl group; anda chelating agent comprising pyrogallol, said pyrogallol being present in an amount between 0.5 and 5.0 percent by weight of said aqueous emulsion.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: February 9, 1988
    Assignee: Neutra Rust International Limited
    Inventor: Daniel C. Roberts