Patents by Inventor Richard L. Pober

Richard L. Pober 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).

  • Centrifugation system using static layer
    Patent number: 4983157
    Abstract: An improved method and system are provided for centrifugally separating a suspended colloidal phase. The method in accordance with a preferred embodiment of the invention involves filling a spinning centrifuge bowl with a fluid medium distinct from the suspension, so that a static zone of liquid forms in the bowl, and then introducing the suspension into the bowl in a feed location concentrically inside of the static zone.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: January 8, 1991
    Assignee: Ceramics Process Systems Corp.
    Inventors: Richard L. Pober, Bruce E. Novich
  • Highly loaded, pourable suspensions of particulate materials
    Patent number: 4904411
    Abstract: Slurries or suspensions for forming sintered ceramic or metallic articles are described as having a high volume fraction of sinterable particles, at least 55% by volume. while the slurries maintain a pourable viscosity, such as not more that 2000 cPs at 100 s.sup.-1 ; the slurries can be dilatant and/or pseudoplastic. The slurries are prepared by using specific families of dispersants; namely acrylic acid-based polymeric polyelectrolytes, polyethylene imine-based polyelectrolytes, and coupling agents from the subfamilies of oxy-silane esters and phosphate esters. Fabrication of the compositions includes milling under high energy and the addition of at least a portion of the particles in a step-wise manner.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: February 27, 1990
    Assignee: Ceramics Process Systems Corp.
    Inventors: Bruce E. Novich, Mark A. Occhionero, Richard L. Pober
  • System for classification of particulate materials
    Patent number: 4781671
    Abstract: Commercial wide size distribution powders are size classified into precise size fractions by means of a controlled, semi-continuous, multi-stage centrifugal classification system. The system has utility for a wide range of colloidal materials. The throughput of the semi-continuous process is higher than that of batch processes, and the semi-continuous process produces narrow size ranges and optimum yields.
    Type: Grant
    Filed: March 28, 1987
    Date of Patent: November 1, 1988
    Assignee: Ceramics Process Systems Corporation
    Inventors: Richard L. Pober, Bruce E. Novich
  • Process for forming fast sodium-ion transport compositions
    Patent number: 4166159
    Abstract: Fast sodium-ion transport compositions of the formula:Na.sub.1+x Zr.sub.2 Si.sub.x P.sub.3-x O.sub.12wherein x is greater than 0 and less than 3 are formed from ZrSiO.sub.4 and anhydrous trisodium phosphate, disodium phosphate, mixtures of trisodium phosphate and disodium phosphate alone or with sodium phosphate.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: August 28, 1979
    Assignee: Massachusetts Institute of Technology
    Inventor: Richard L. Pober
  • Fabrication of nonsparking titanium diboride mining tools
    Patent number: 3954419
    Abstract: Titanium diboride is composited with about 11 to 13 per cent by weight of copper and about 2 to 4 per cent by weight of nickel, preferably by mixing the constituents in powdered form, heating the mixture to about 2000.degree.F, and then hot pressing at a pressure of about 3000 psi and a temperature of about 2650.degree.F. The titanium diboride-copper-nickel composite composition possesses execellent strength and non-sparking properties useful in the fabrication of mining tools and implements.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: May 4, 1976
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: Lawrence P. Kaufman, Richard L. Pober