Patents by Inventor Lawrence C. Hale

Lawrence C. Hale 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).

  • Process for inhibiting the settlement of post-veliger zebra mussels
    Patent number: 6106730
    Abstract: This invention relates to an intermittent process for inhibiting the settlement of zebra mussels in the post-veliger state in addition to providing infestation control of zebra mussels in the veliger state. The process comprises (a) connecting a chlorine dioxide generator to an entry means, such as a water intake pipe or reservoir, of a flowing aqueous system containing a population of zebra mussel veligers and post-veligers, (b) pumping specified amounts of chlorine dioxide into said aqueous system.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: August 22, 2000
    Assignee: Ashland Inc.
    Inventors: Scott G. Freymark, Lawrence C. Hale