Patents by Inventor David M. Nelson

David M. Nelson 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: 9695953
    Abstract: Needleless access port valves are generally discussed herein with particular discussions extended to needleless access port valves incorporating a piston comprising slit along an upper piston section for accommodating fluid flow. The slit opens when the piston is compressed by a medical implement, such as a syringe tip, to permit fluid communication between the inlet and the outlet of the vale housing. The slit may be cut using high frequency cutting machine or a multi-axis robot arm and a cutting blade.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: July 4, 2017
    Assignee: B. Braun Medical Inc.
    Inventors: Edwin L. Burnard, David M. Nelson
  • Publication number: 20140308669
    Abstract: The present application provides methods for obtaining single cells from a sample. Methods for isolating and analyzing molecular features obtained from a single cell are also disclosed herein. For example, individual circulating tumor cells (CTCs) from a sample such as a patient's blood sample can be identified and obtained using methods disclosed herein, and picked for further analysis.
    Type: Application
    Filed: January 23, 2012
    Publication date: October 16, 2014
    Applicant: Epic Science, Inc.
    Inventors: Xing Yang, David M. Nelson, Peter Kuhn, Daniel Chesnaye Lazar
  • Publication number: 20110024664
    Abstract: Needleless access port valves are generally discussed herein with particular discussions extended to needleless access port valves incorporating a piston comprising slit along an upper piston section for accommodating fluid flow. The slit opens when the piston is compressed by a medical implement, such as a syringe tip, to permit fluid communication between the inlet and the outlet of the vale housing. The slit may be cut using high frequency cutting machine or a multi-axis robot arm and a cutting blade.
    Type: Application
    Filed: July 28, 2009
    Publication date: February 3, 2011
    Inventors: Edwin L. Burnard, David M. Nelson
  • Patent number: 4295299
    Abstract: A door frame comprising wood frame members including a strike jamb, a hinge jamb, and a header, said frame members each being recessed longitudinally to provide a rabbet having a major surface and a minor surface perpendicular to said major surface, a slot substantially coplanar with the major surface of said rabbet extending into a non-recessed portion of said member, and a substantially J-shaped metal frame reinforcing member having a major flange, a minor flange substantially parallel to said major flange, and a connecting web substantially perpendicular to said major and minor flanges, said minor flange engaging the major surface of said rabbet and extending into said slot, and the major flange of said reinforcing member extending in engagement with the outer surface of said member.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: October 20, 1981
    Assignee: United States Gypsum Company
    Inventor: David M. Nelson
  • Patent number: 4218848
    Abstract: A door formed of a pair of spaced-apart metal skins and a core provided intermediate the skins composed of a foamed plastic material. A plastic housing is provided having a wall substantially perpendicular to and engaging the metal skins and cooperating therewith to define a lock cylinder chamber and a communicating lock bolt chamber and preventing the foam plastic material from entering the chambers.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: August 26, 1980
    Assignee: United States Gypsum Company
    Inventor: David M. Nelson
  • Patent number: 4028057
    Abstract: A gas analyzer in which a catalytic resistance element creates an imbalance in a Wheatstone bridge and lights a number of successive light emitting diodes arranged in a color coded analog display which is rugged, stable and easily read under all light conditions, in proportion to the subject gas present. Erratic and confusing indications are eliminated by driving the bridge into negative imbalance during the warm-up period. Initial warm-up, testing of the battery and transition to the monitor function is accomplished by a single operating stroke of only one switch.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: June 7, 1977
    Assignee: Ambac Industries, Inc.
    Inventor: David M. Nelson
  • Patent number: 4021036
    Abstract: A tennis teaching machine has a ball hopper slidably mounted on a vertical support. A hollow extension arm protrudes from the ball hopper and has a ball projection mechanism at the end. A rotating ball tray supported within the ball hopper supplies balls to the extension arm and ball projection mechanism. A control unit has a tapedeck which automatically activates the ball projection mechanism when a sensor detects a strip of metal foil on magnetic tape played by a tapedeck. The tennis teaching machine is positioned between two training mats upon which various tennis technique training indicia are inscribed. The student listens to instructions from the control unit and strokes a tennis ball dropped on cue from the extension arm. When stroking the tennis ball, the student positions his feet and racket as indicated by the training indicia on the mats.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: May 3, 1977
    Inventors: David M. Nelson, William Stribrsky, John A. Britz
  • Patent number: 3931805
    Abstract: A gas fueled barbeque grill comprising a housing, means within the housing for supporting food to be cooked, a burner assembly disposed below the food supporting means, the assembly including a plurality of spaced apart burner elements each including a portion which when supplied with an appropriate ignited mixture of a gaseous fuel and air provides a flameless incandescent heating area, with the burner elements being spaced apart a sufficient degree to provide cooking heat for substantially the entire area of the food supporting grate.
    Type: Grant
    Filed: August 21, 1974
    Date of Patent: January 13, 1976
    Assignee: King-Seeley Thermos Co.
    Inventor: David M. Nelson