Patents by Inventor Joseph P. Doherty

Joseph P. Doherty 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: 6579350
    Abstract: A pleatable high efficiency non-woven, gas filtration media is provided. The media has an electrically charged air laid fibrous layer with a thickness between about 2 and about 35 mils, and a wet laid fibrous layer having a thickness of between about 5 and about 35 mils. The combined layers have, (a) a thickness of between about 10 and about 50 mils, (b) a stiffness of between about 200 and about 3500 mgs, (c) a Frazier of between about 10 and about 400 CFM, and (d) an &agr; of at least 15.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Lydall, Inc.
    Inventor: Joseph P. Doherty
  • Publication number: 20020083837
    Abstract: A pleatable high efficiency non-woven, gas filtration media is provided. The media has an electrically charged air laid fibrous layer with a thickness between about 2 and about 35 mils, and a wet laid fibrous layer having a thickness of between about 5 and about 35 mils. The combined layers have, (a) a thickness of between about 10 and about 50 mils, (b) a stiffness of between about 200 and about 3500 mgs, (c) a Fraizer of between about 10 and about 400 CFM, and (d) an &agr; of at least 15.
    Type: Application
    Filed: November 13, 2001
    Publication date: July 4, 2002
    Inventor: Joseph P. Doherty
  • Patent number: 4840765
    Abstract: A process for removing organic compounds from a nuclear waste slurry comprising reacting a mixture of radioactive waste precipitate slurry and an acid in the presence of a catalytically effective amount of a copper (II) catalyst whereby the organic compounds in the precipitate slurry are hydrolyzed to form volatile organic compounds which are separated from the reacting mixture. The resulting waste slurry, containing less than 10 percent of the orginal organic compounds, is subsequently blended with high level radioactive sludge and transferred to a virtrification facility for processing into borosilicate glass for long-term storage.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: June 20, 1989
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Joseph P. Doherty, James C. Marek