Patents by Inventor Richard E. Partch

Richard E. Partch 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: 10126672
    Abstract: A charge control agent-silicone oil composition includes a silicone oil and a charge control agent, the charge control agent being covalently linked to the silicone oil or is homogenously dispersed in the silicone oil as a dispersion. A method includes reacting an electrophilically-activated silicone oil with a charge control agent, thereby covalently linking the charge control agent to the silicone oil to provide a charge control agent-functionalized silicone oil. A bio-based toner includes a resin blend that includes a petroleum based resin and a bio-based resin, a charge control agent-silicone oil, a colorant, and a silica and/or titania additive, the toner having a bio-content of greater than about 25% by weight and does not exhibit moisture sensitivity.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: November 13, 2018
    Assignees: XEROX CORPORATION, CLARKSON UNIVERSITY
    Inventors: Varun Sambhy, Juan A. Morales-Tirado, Santokh S. Badesha, Richard E. Partch
  • Publication number: 20170097583
    Abstract: A charge control agent-silicone oil composition includes a silicone oil and a charge control agent, the charge control agent being covalently linked to the silicone oil or is homogenously dispersed in the silicone oil as a dispersion. A method includes reacting an electrophilically-activated silicone oil with a charge control agent, thereby covalently linking the charge control agent to the silicone oil to provide a charge control agent-functionalized silicone oil. A bio-based toner includes a resin blend that includes a petroleum based resin and a bio-based resin, a charge control agent-silicone oil, a colorant, and a silica and/or titania additive, the toner having a bio-content of greater than about 25% by weight and does not exhibit moisture sensitivity.
    Type: Application
    Filed: October 5, 2015
    Publication date: April 6, 2017
    Inventors: Varun Sambhy, Juan A. Morales-Tirado, Santokh S. Badesha, Richard E. Partch
  • Patent number: 7709053
    Abstract: A method of manufacturing polymer-coated particles is useful for chemical mechanical polishing magnetic, optical, semiconductor or silicon substrates. First it provides a dispersion of particle cores in a non-aqueous solvent. Then introducing a polymeric precursor into the dispersion to react the polymeric precursor forms a polymer. The polymer coats at least a portion of the surface of the particle cores with the polymer and forms the polymer-coated particles having a solid outer polymeric shell. Substituting the non-aqueous solvent with water forms an aqueous mixture containing the polymer-coated particles. And it forms an aqueous chemical mechanical polishing formulation with the polymer-coated particles without drying the polymer-coated particles.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: May 4, 2010
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: Hongyu Wang, John Quanci, Richard E. Partch, Nathaniel A. Barney
  • Patent number: 7563613
    Abstract: A method of removing a toxic compound comprising contacting the toxic compound with a particle having two regions, the first region containing a detoxifying enzyme and the second region containing a material selected to partition the toxic compound into the second region. The particle may be a nanoparticle.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: July 21, 2009
    Assignee: University of Florida
    Inventors: Donn M. Dennis, Charles R. Martin, Timothy E. Morey, Richard E. Partch, Dinesh O Shah, Manoj Varshney
  • Patent number: 7202282
    Abstract: The subject invention provides microemulsions having, as one component thereof, electron-deficient aromatic rings, e.g.. di(trifluoromethyi) benzene, for efficient separation and/or isolation of target molecules, e.g., bupivacaine.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: April 10, 2007
    Assignee: University of Florida
    Inventors: Donn M. Dennis, Timothy E. Morey, Richard E. Partch, Dinesh O. Shah, Manoj Varshney
  • Patent number: 7182798
    Abstract: The polishing composition is suitable for chemical mechanical polishing magnetic, optical, semiconductor or silicon substrates. The polishing composition includes abrasive particles in a liquid media. The abrasive particles have a particle core, the particle core having a hardness and a polymeric shell physisorbed to and encapsulating the particle core. The polymeric shell has a solid structure and a hardness lower than the hardness of the particle core. The abrasive particles have an average particle size of less than or equal to about 2 micrometers dispersed in the liquid media.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: February 27, 2007
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: Richard E. Partch, Nathaniel A. Barney, Hongyu Wang, John Quanci
  • Patent number: 6977171
    Abstract: A particle with two regions, the first region contains a detoxifying enzyme and a second region that partitions toxic compounds. The particle may be a nanoparticle.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: December 20, 2005
    Assignee: University of Florida
    Inventors: Donn M. Dennis, Charles R. Martin, Timothy E. Morey, Richard E. Partch, Dinesh O Shah, Manoj Varshney
  • Publication number: 20040011644
    Abstract: The subject invention provides unique materials and methods for selectively removing molecules from a medium. In a preferred embodiment of the subject invention, microemulsions are specifically designed to facilitate effective separation of even closely related chemical entities.
    Type: Application
    Filed: April 22, 2003
    Publication date: January 22, 2004
    Inventors: Donn M. Dennis, Timothy E. Morey, Richard E. Partch, Dinesh O. Shah, Manoj Varshney
  • Patent number: 6273663
    Abstract: An apparatus for accumulating a stack of bags having wicket receiving holes comprises a paddle wheel conveyor for placing bags, a motorized stacker wheel adjacent the paddle wheel conveyor to receive the placed bags from the paddle wheel, a plurality of stacker bar units each rotatably mounted to the stacker wheel and a pick up head operatively positioned adjacent said plurality of stacker bar units for receiving the stack of bags from one of the stacker bar units. The pick up head has two tubes that receive and maintain alignment of the bags, a restraining jaw for restraining the stack of bags on the tubes and a pusher plate for pushing the stack of bags off the two tubes.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: August 14, 2001
    Assignee: Huntsman Packaging Corporation
    Inventors: Gordon F. Pickering, Richard E. Partch, Stewart L. Fluent, Colin R. Hart
  • Patent number: 5911553
    Abstract: Apparatus for automatically removing bags from a supply conveyor and stacking a predetermined number of bags upon raised pins. The stacks are then placed on a stack transfer assembly that is then moved into a transfer station wherein the stacks are placed on wickets. An endless accumulator conveyor is arranged to deliver the wickets into the transfer station in timed relation with the movement of the transfer assembly between stations.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: June 15, 1999
    Assignee: Huntsman Packaging Corporation
    Inventors: Gordon F. Pickering, Richard E. Partch, Stewart L. Fluent, Colin R. Hart
  • Patent number: 5738478
    Abstract: Apparatus for automatically removing bags from a supply conveyor and stacking a predetermined number of bags upon raised pins. The stacks are then placed on a stack transfer assembly that is then moved into a transfer station wherein the stacks are placed on wickets. An endless accumulator conveyor is arranged to deliver the wickets into the transfer station in timed relation with the movement of the transfer assembly between stations.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: April 14, 1998
    Assignee: Huntsman Design Products Corporation
    Inventors: Gordon F. Pickering, Richard E. Partch, Stewart L. Fluent, Colin R. Hart
  • Patent number: 5646412
    Abstract: A radiographic phosphor panel and radiographic phosphor composition. The radiographic phosphor panel includes a support and a luminescent layer. The luminescent layer overlies the support. The luminescent layer includes binder and coated particles. The binder is a film-forming polymer. The coated particles are embedded in the binder. The coated particles each have a core and a shell. The core is radiographic phosphor. The shell is exterior to and substantially encloses the core. The shell comprises vinyl-epoxy resin, having uncured epoxy groups in a concentration of from about 1.times.10.sup.-5 to about 60 percent by weight relative to the weight of the shell. The resin has a different composition than the binder.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: July 8, 1997
    Assignee: Eastman Kodak Company
    Inventors: Philip Steven Bryan, Joseph F. Bringley, Richard E. Partch