Patents by Inventor David Lee Johnson

David Lee Johnson 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: 8571697
    Abstract: An apparatus for machining the ends of a component includes a plurality of work stations, and a transport mechanism for moving the component along a path to the plurality of work stations. The transport mechanism is positioned to be inboard of the ends of a component. At least one of a first work station or a second work station of the plurality of workstations includes a first fixturing portion for holding a first end, and a first machine for carrying out machine operations on the first end. The first fixturing portion and the first machine are movable in a direction transverse to the path.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: October 29, 2013
    Assignee: Progressive Systems, Inc.
    Inventors: Jeffrey D. Chandler, David Lee Johnson
  • Patent number: 8507744
    Abstract: The proposed process uses crystallization technology to purify paraxylene simultaneously of large concentrations of C8 aromatics and also small concentrations of oxygenated species.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 13, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Mark Paul Hagemeister, David Lee Johnson, John Joseph Monson
  • Publication number: 20120296143
    Abstract: The proposed process uses crystallization technology to purify paraxylene simultaneously of large concentrations of C8 aromatics and also small concentrations of oxygenated species.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 22, 2012
    Inventors: Mark P. Hagemeister, David Lee Johnson, John Joseph Monson
  • Patent number: 8313713
    Abstract: A device and method solves the problems of improving precision, in particular in reducing movement of a cuvette, particularly lateral or side to side movement of a cuvette, during the measurement process. The device, which stabilizes a cuvette during a measurement read in an analyzer having a cuvette path of travel, includes: a fixed support located on a first side of the path of travel and abutting a side of the cuvette at a location that does not interfere with an optical window on the cuvette on which the measurement read takes place; and a movable support located on a second side of the path of travel and biased against a side of the cuvette at a location that does not interfere with the optical window on the cuvette on which the measurement read takes place, and which is opposite the side abutting the fixed support.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: November 20, 2012
    Assignee: Ortho-Clinical Diagnostics, Inc.
    Inventors: Merrit N. Jacobs, Robert Anthony Burkovich, David Lee Johnson
  • Patent number: 8252967
    Abstract: The proposed process uses crystallization technology to purify paraxylene simultaneously of large concentrations of C8 aromatics and also small concentrations of oxygenated species.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: August 28, 2012
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Mark Paul Hagemeister, David Lee Johnson, John Joseph Monson
  • Publication number: 20110093112
    Abstract: An apparatus for machining the ends of a component includes a plurality of work stations, and a transport mechanism for moving the component along a path to the plurality of work stations. The transport mechanism is positioned to be inboard of the ends of a component. At least one of a first work station or a second work station of the plurality of workstations includes a first fixturing portion for holding a first end, and a first machine for carrying out machine operations on the first end. The first fixturing portion and the first machine are movable in a direction transverse to the path.
    Type: Application
    Filed: August 25, 2010
    Publication date: April 21, 2011
    Inventors: Jeffrey D. Chandler, David Lee Johnson
  • Publication number: 20100261941
    Abstract: The proposed process uses crystallization technology to purify paraxylene simultaneously of large concentrations of C8 aromatics and also small concentrations of oxygenated species.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 14, 2010
    Inventors: Mark Paul Hagemeister, David Lee Johnson, John Joseph Monson
  • Patent number: 6902593
    Abstract: A multi-cyclone gas/solids separator with reduced solids re-entrainment is disclosed. The separator uses a plurality of cyclones spaced horizontally apart from adjacent cyclones to process flue gas containing residual catalyst fines. Each cyclone has a body that has a feed inlet end for admitting gas and entrained solids into an annular space defined by a sidewall of the cyclone body and a cylindrical gas outlet tube axially aligned with the cyclone body. A solids outlet at an opposing end of the cyclone body has a tangential outlet for solids and a minor amount of gas through a sidewall of the cyclone body. A gas reflux opening is axially aligned with the outlet tube. The plurality of cyclones share both a common catch chamber for solids discharged from the solids outlet, and a common manifold for gas and entrained solids.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: June 7, 2005
    Assignee: Kellogg Brown and Root, Inc.
    Inventors: Richard B. Miller, Eusebius Gbordzoe, Yong-Lin Yang, Suisheng M. Dou, David Lee Johnson
  • Publication number: 20040166033
    Abstract: A multi-cyclone gas/solids separator with reduced solids re-entrainment is disclosed. The separator uses a plurality of cyclones spaced horizontally apart from adjacent cyclones to process flue gas containing residual catalyst fines. Each cyclone has a body that has a feed inlet end for admitting gas and entrained solids into an annular space defined by a sidewall of the cyclone body and a cylindrical gas outlet tube axially aligned with the cyclone body. A solids outlet at an opposing end of the cyclone body has a tangential outlet for solids and a minor amount of gas through a sidewall of the cyclone body. A gas reflux opening is axially aligned with the outlet tube. The plurality of cyclones share both a common catch chamber for solids discharged from the solids outlet, and a common manifold for gas and entrained solids.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 26, 2004
    Applicant: KELLOGG BROWN & ROOT, INC.
    Inventors: Richard B. Miller, Eusebius Gbordzoe, Yong-Lin Yang, Suisheng M. Dou, David Lee Johnson
  • Patent number: 4047961
    Abstract: A cement of the same general characteristics of a normal Type I is provided which involves the intergrind of from 1 up to about 25 parts by weight of air-cooled iron blast furnace slag, and from over 75 up to 99 parts by weight of conventional Type I Portland clinker. Traditional set control additives, particularly such as sulfate provided through gypsum, are used in the new cement composition. It is particularly noted that the slag involved is air-cooled, as contrasted to an amorphous material obtained by water quenching. In some respects the new product is better than traditional Type I, and can thus be referred to as an improved Type I.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: September 13, 1977
    Assignee: General Portland, Inc.
    Inventors: William Eugene Alderete, John Parke Boyer, Kenneth Earl Daugherty, David Lee Johnson