Patents by Inventor Howard Zakheim

Howard Zakheim 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).

  • Method of preparing dispersions
    Patent number: 8888264
    Abstract: A process for preparing dispersions of particles, especially aqueous dispersions is described. The process relates to a dispersion process where a polar solvent is added during the dispersion process such that the hydrogen bonding solubility parameter component, ?h, of the initial dispersion mixture increases at least 1.5 units. When the polar solvent added is water the dispersion process is called a Solvent-to-Water Process.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: November 18, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Harry Joseph Spinelli, Tristan Williams, Michael Stephen Wolfe, Howard Zakheim
  • METHOD OF PREPARING DISPERSIONS
    Publication number: 20120127235
    Abstract: A process for preparing dispersions of particles, especially aqueous dispersions is described. The process relates to a dispersion process where a polar solvent is added during the dispersion process such that the hydrogen bonding solubility parameter component, ?h, of the initial dispersion mixture increases at least 1.5 units. When the polar solvent added is water the dispersion process is called a Solvent-to-Water Process.
    Type: Application
    Filed: July 29, 2010
    Publication date: May 24, 2012
    Applicant: E.I. DuPont De Nemours and Company
    Inventors: Harry Joseph Spinelli, Tristan Williams, Michael Stephen Wolfe, Howard Zakheim
  • Media mill process
    Patent number: 7789333
    Abstract: This invention relates to the preparation of particle dispersions in a media mill using plastic, substantially cubic media to effect particle size reduction and/or dispersion of the particles.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 7, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Howard Zakheim, Jiang Hong, Alexander K. Sorser
  • Media mill process
    Publication number: 20030089277
    Abstract: This invention relates to the preparation of particle dispersions in a media mill using plastic, substantially cubic media to effect particle size reduction and/or dispersion of the particles.
    Type: Application
    Filed: October 29, 2002
    Publication date: May 15, 2003
    Inventors: Howard Zakheim, Jiang Hong, Alexander K. Sorser
  • Process of magnetic media milling
    Patent number: 5183214
    Abstract: A process of media milling employing a mill having a magnetic circuit of magnetic impellers (11) on a shaft (12), magnetized media, and a magnetizable outer shell (10).
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: February 2, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard Zakheim, Peter M. Clinton, James D. Goldschneider, Christopher A. Kasmer, Markus Zahn, Charles L. Hoffmeyer
  • Process and apparatus for magnetic media milling
    Patent number: 5178338
    Abstract: Media mill (1) having a magnetic circuit of magnetic impellers (11) on a shaft (12), magnetized media, and a magnetizable outer shell (10) which provides improved efficiency. The impellers (43) are magnetized by being sandwiched between at least two permanent magnets (45) in or on the shaft (42), which magnets have the same polar charge facing each other.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: January 12, 1993
    Inventors: Howard Zakheim, James D. Goldschneider, Markus Zahn, Charles L. Hoffmeyer
  • Magnetic media mill
    Patent number: 5022592
    Abstract: Media mill having a magnetic circuit of magnetic impellers on a shaft, magnetized media, and a magnetizable outer shell which provides improved efficiency.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: June 11, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Howard Zakheim, Peter M. Clinton, James D. Goldschneider, Christopher A. Kasmer, Markus Zahn, Charles L. Hoffmeyer