Patents by Inventor Ray S. Long

Ray S. Long 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: 4873014
    Abstract: The corrosion of steel during acid pickling is inhibited by the use of an acid pickling composition containing hydrochloric acid, water and a mixture of a polyalkylene polyamine and a polyglycol in an amount sufficient to inhibit corrosion. A 75:25 ratio of tetraethylene pentamine to polypropylene glycol is particularly effective as a corrosion inhibitor.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: October 10, 1989
    Assignee: The Dow Chemical Company
    Inventor: Ray S. Long
  • Patent number: 4216087
    Abstract: The present invention concerns a method of inhibiting or controlling calcium scale deposition in SO.sub.2 flue gas scrubbers which comprises scrubbing said flue gases with an aqueous composition comprising concentrated sodium hydroxide and a 2-hydroxyethyl iminodiacetate calcium inhibitor.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: August 5, 1980
    Assignee: The Dow Chemical Company
    Inventors: Ray S. Long, John B. Siemak