Patents by Inventor David R. Barnes

David R. Barnes 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).

  • Publication number: 20240115259
    Abstract: An apparatus includes a first jaw (16) and a second jaw (618, 718, 900) that cooperate to clamp and staple tissue (90). The second jaw includes a jaw body (620, 720, 902) and a distal tip (619, 719, 906) pivotable relative to the jaw body between a first discrete and a second discrete position. First and second openings (663, 784, 785, 932, 934) are both defined by one of the distal tip or a structure (621, 920) located proximal to the distal tip. A projection (637, 781, 918) is defined by the other of the distal tip or the structure. The projection is positionable within the first opening (663, 785, 932) to releasably retain the distal tip in the first discrete position, and within the second opening (663, 784, 934) to releasably retain the distal tip in the second discrete position.
    Type: Application
    Filed: September 1, 2023
    Publication date: April 11, 2024
    Inventors: Steven H. Nguyen, Nicolo Garbin, Megan M. Greenwood, Benjamin N. Barnes, Marcus P. Pantoja, David J. Salisbury, Weston S. Hirschfeld, Pierre R. Mesnil, Daniel V. Jones
  • Publication number: 20210071947
    Abstract: The present invention is directed to a method and system of separating carbon monoxide from syngas mixtures with low methane content by cryogenic means where a partial condensation cycle is generally employed, and more specifically towards providing a methane slip stream to the feed in order to reduce the potential for any carbon dioxide entering the cold box to freeze, thereby preventing plugging of the cold box heat exchanger.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 11, 2021
    Inventors: Joseph M Schwartz, Luke J Coleman, Minish Mahendra Shah, David R Barnes
  • Patent number: 10294102
    Abstract: The present invention relates to a method of reducing a catalyst utilized in a hydrogen plant. More specifically, the invention relates the reduction of a catalyst employed in the steam methane reformer.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: May 21, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Andrew M Warta, Troy M Raybold, David R Barnes, Jr.
  • Publication number: 20180170751
    Abstract: The present invention relates to a method of reducing a catalyst utilized in a hydrogen plant. More specifically, the invention relates the reduction of a catalyst employed in the steam methane reformer.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: ANDREW M. WARTA, TROY M. RAYBOLD, DAVID R. BARNES, JR.
  • Patent number: 5298206
    Abstract: An automated system for casting hollow fiber membranes into a variety of prescribed shapes, including spiral, linear, circular and rectangular. The system also has the capability to change the configuration during casting, which increases productivity. A co-extrusion die is rotated over a stationary coagulation bath A computer is used to control the motion of the die to make a membrane with the desired shape The nozzle is oriented in a manner that will compensate for distortions that occur in wall thickness in the area of a bend. In addition, the nozzle's annulus is offset to make the leading portion of the annulus slightly thicker and the trailing portion thinner at the point where the fluids exit the nozzle, which results in a uniformly symmetric wall thickness. A system embodying the invention includes X, Y and .theta.-directional servomotors 1A-1C (FIG. 1), each of which is coupled to an associated position encoder 2A-2C.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: March 29, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert D. Milliken, David R. Barnes, Amy L. Foley, Karen E. Dunleavy, Edward J. Doherty
  • Patent number: D339443
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: September 21, 1993
    Assignee: General Mills, Inc.
    Inventors: Rita J. Bielinski, Keith A. Evenson, David R. Barnes