Patents Represented by Attorney Elmer C. Lupton

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  • Working materials with smart cutting fluids
    Patent number: 7776803
    Abstract: An process for working a material in which a reverse thermal fluid is used as a cutting fluid and, as a result of heat generated during the working process, the fluid increases in temperature above its transition temperature and viscosifies and thickens. In another embodiment, the invention is an article of manufacture of a material which has been worked to increase its temperature and a reverse thermal fluid in intimate thermal contact with the material above the transition temperature of the reverse thermal fluid.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: August 17, 2010
    Inventors: Steven B Leeb, Elmer C Lupton
  • Stable copolymers
    Patent number: 7273891
    Abstract: A graft reverse thermal hydrogel which does not show substantial loss of complex viscosity at and up to 20 degrees above the transition temperature upon autoclaving or aging. Other embodiments include the graft reverse thermal copolymer which can be dissolved in water to produce the graft reverse thermal hydrogel, a process for manufacturing the graft reverse thermal copolymer and hydrogel and applications for the stable graft reverse thermal hydrogel.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: September 25, 2007
    Assignee: B L Partnership
    Inventors: Lev Bromberg, Elmer C. Lupton
  • Smart cutting fluids
    Patent number: 7060663
    Abstract: An process for working a material in which a reverse thermal fluid is used as a cutting fluid and, as a result of heat generated during the working process, the fluid increases in temperature above its transition temperature and viscosifies and thickens. In another embodiment, the invention is an article of manufacture of a material which has been worked to increase its temperature and a reverse thermal fluid in intimate thermal contact with the material above the transition temperature of the reverse thermal fluid.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: June 13, 2006
    Inventors: Steven B Leeb, Elmer C Lupton