Patents by Inventor Allen C. Hieatt

Allen C. Hieatt 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: 5885364
    Abstract: A method of cleaning and maintaining potable water distribution systems which have reduced flow due to an increase of water scale deposits, sediment, and the like on the inside surface of the pipe is disclosed. An aqueous acidic cleaning solution is introduced and circulated through the pipe to be treated for a sufficient time to dissolve and loosen the scale and sediment, and the spent solution containing dissolved or suspended scale and sediment is flushed from the pipe to provide a cleaned pipe with improved water flow. It is also desirable to flush the water distribution pipe system with high pressure water after the treatment to remove loosened scale and sediment that was not removed during the circulation and flushing of the treating solution.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: March 23, 1999
    Assignee: H.E.R.C. Products Incorporated
    Inventors: Allen C. Hieatt, Jerome H. Ludwig
  • Patent number: 5451335
    Abstract: A method for the removal and prevention of scale using a soap composition of a 1:1 stoichiometric ratio equivalent of an acid and a base. The acid, for example, is an organic carboxylic acid or a mineral acid. The base is an amine or ammonia. The organic acids consist of formic, acetic, propionic, citric, glycolic, lactic, tartaric, polyacrylic, succinic, sulfonic, gluconic, benzoic, salicylic, and mixtures thereof. The mineral acids consist of hydrochloric, nitric, phosphoric, polyphosphoric, hydrofluoric, boric, sulfuric, and sulfurous, and mixtures thereof.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: September 19, 1995
    Assignee: H.E.R.C. Products Incorporated
    Inventors: Allen C. Hieatt, Jerome H. Ludwig
  • Patent number: 5360488
    Abstract: A method of cleaning and maintaining water distribution systems which have reduced flow due to an increase of water scale deposits, sediment, and the like on the inside surface of the pipe is disclosed. An aqueous acidic cleaning solution is introduced and circulated through the pipe to be treated for a sufficient time to dissolve and loosen the scale and sediment, and the spent solution containing dissolved or suspended scale and sediment is flushed from the pipe to provide a cleaned pipe with improved water flow. It is also desirable to flush the water distribution pipe system with high pressure water after the treatment to remove loosened scale and sediment that was not removed during the circulation and flushing of the treating solution.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: November 1, 1994
    Assignee: H.E.R.C. Products Incorporated
    Inventors: Allen C. Hieatt, Jerome H. Ludwig
  • Patent number: 5348679
    Abstract: This invention relates to a multipurpose cleaner composition which has been found to be useful in a very broad range of cleaning applications when employed in various aqueous dilutions. The cleaning compositions of this invention have found utility in cleaning applications of low demand, such as cleaning of windows, to those of high demand, such as encrusted stoves or automotive engines and the like. Because the concentrated multipurpose cleaner is readily diluted, it can be marketed in a concentrated form and diluted by the user to the desired concentration for the particular cleaning job requirements, thus reducing the amount of cleaner packaging consumed by a household.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: September 20, 1994
    Assignee: h.e.r.c. Incorporated
    Inventors: Dennis G. Weinhold, Allen C. Hieatt, Jerome H. Ludwig
  • Patent number: 5322635
    Abstract: A soap composition for the removal and prevention of scale in aqueous media comprising a 1:1 stoichiometric equivalent of an organic carboxylic acid and an amine base. The organic carboxylic acid is selected from the group consisting of hydroxyacetic, citric, acetic, gluconic, salicylic, tartaric and benzoic, and mixtures thereof. The amine base is selected from the group consisting of monoisopropanolamine, diisopropanolamine, triisopropanolamine, monoethanolamine, diethanolamine, triethanolamine, diethylamine and mixtures thereof.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: June 21, 1994
    Assignee: h.e.r.c. Incorporated
    Inventors: Allen C. Hieatt, Jerome H. Ludwig