Patents by Inventor Carl B. Richenberg

Carl B. Richenberg 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).

  • Cylinder preparation for maintaining stability of stored materials
    Patent number: 9829152
    Abstract: Novel cylinder passivation procedures to increase the room temperature stability of gaseous tin deuteride (SnD4) are described. Incorporation of specific organic-containing materials, which when applied onto surfaces of a vessel and/or conduit extending therefrom, can increase the shelf life stability of thermodynamically unstable gases stored within such pretreated vessels.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: November 28, 2017
    Assignee: PRAXXAIR TECHNOLOGY, INC.
    Inventors: Ronald F. Spohn, Ashwini Sinha, Carl B. Richenberg
  • CYLINDER PREPARATION FOR MAINTAINING STABILITY OF STORED MATERIALS
    Publication number: 20130334231
    Abstract: Novel cylinder passivation procedures to increase the room temperature stability of gaseous tin deuteride (SnD4) are described. Incorporation of specific organic-containing materials, which when applied onto surfaces of a vessel and/or conduit extending therefrom, can increase the shelf life stability of thermodynamically unstable gases stored within such pretreated vessels.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 19, 2013
    Inventors: Ronald F. Spohn, Ashwini Sinha, Carl B. Richenberg
  • Method of accelerating the dissolution rate of accumulated filter cake by channeling gas bubbles through the cake
    Patent number: 5882527
    Abstract: A process of dissolving solid waste material in packed beds comprises the addition to the packed bed of a solvent for the solid waste and a material which releases a gas on contact with the solvent which forms channels in the packed bed allowing more rapid access of the solvent to the bed.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: March 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: Bruce J. Rubin, Carl B. Richenberg, David M. Melos
  • Method of preparing coupler dispersions for photographic use
    Patent number: 5108611
    Abstract: A method of preparing a coupler dispersion in gelatin by separating the auxiliary coupler solvent using a hydrophobic microporous membrane and contacting the opposite surface of the membrane with a coupler solvent.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: April 28, 1992
    Assignee: Eastman Kodak Company
    Inventors: Stephen P. Chen, Edgar P. Lougheed, Carl B. Richenberg
  • Method of preparing coupler dispersions for photographic use
    Patent number: 5024929
    Abstract: A method of preparing a coupler dispersion in gelatin by separating the auxiliary coupler solvent using a hydrophilic membrane having a pure size less than 175 Angstroms.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 18, 1991
    Assignee: Eastman Kodak Company
    Inventors: Edgar P. Lougheed, Carl B. Richenberg, Stephen P. Chen
  • Process for drying solid photographic addenda
    Patent number: 4946965
    Abstract: Solid photographic addenda, such as photographic color couplers or sensitizing dyes, which are wet with occluded organic liquid, after being subjected, for example, to processes such as crystallization or washing, are contacted with an extractant composed of carbon dioxide in liquid form or in the form of a supercritical fluid to remove the organic liquid. The process is capable of use with any solid photographic addendum which is insoluble in the extractant and any organic liquid which is soluble in the extractant. It can be completed much more quickly than conventional processes in which such solids are dried with the aid of heat and/or vacuum, while effectively avoiding problems of clumping and thermal degradation which commonly occur in dryers. It provides a product that is capable of meeting the demanding requirements of the photographic art with respect to both physical and chemical characteristics.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: August 7, 1990
    Assignee: Eastman Kodak Company
    Inventors: Frank M. Jahnke, Carl B. Richenberg