Patents by Inventor Daniel Walker

Daniel Walker 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: 20050059698
    Abstract: The invention provides the malate salt of compounds of Formula I: A-NH-C(O)-B.X??Formula I wherein X is malate salt, including D- or L-; wherein A is wherein B is or pharmaceutical composition, racemic mixture, or pure enantiomer thereof. The compounds of Formula I are useful to treat diseases or conditions in which ?7 is known to be involved.
    Type: Application
    Filed: May 4, 2004
    Publication date: March 17, 2005
    Inventors: Jon Selbo, Michael Hawley, Qingwu Jin, Daniel Walker
  • Publication number: 20030132844
    Abstract: A golf bag loss prevention system (10) including a control unit (11) attached to a golf bag (100) and an alarm unit (12) worn by a golfer (200) wherein the alarm unit (12) includes a micro-controller member 30 having a piezo film sensor (35) capable of generating a voltage signal proportional to the amount of movement imparted to the golf bag (100) wherein the micro-controller member (30) converts the voltage signal into a frequency signal that is transmitted to the control unit (11) having a variable frequency sensitivity switch (22) operatively associated with at least one alarm (25/26) that is actuated when the control unit (11) receives a frequency signal from the alarm unit (12) that corresponds to the setting of the frequency sensitivity switch (22).
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventor: Daniel Walker
  • Patent number: 5920069
    Abstract: The gas sample identification apparatus transmits at least one beam of light of predefined frequency band through a gas sample present in a gas sampling chamber. The presence and concentration of various agents in the gas sample are determined by a linear variable filter that selectively passes the light beam transmitted through the gas sample chamber to an array of detectors. The detectors are positioned to receive only a narrow passband component of the light beam. The output signals from the array of detectors is processed by a multivariate statistical processor to accurately identify both the presence and concentration of one or more agents contained in the gas sample.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: July 6, 1999
    Assignee: Datex-Ohmeda, Inc.
    Inventors: Russell John Fischer, Clement Lim Yu, Patrick Francis Crane, Stephen Daniel Walker
  • Patent number: 5731581
    Abstract: The gas sample identification apparatus transmits at least one beam of light of predefined frequency band through a gas sample present in a gas sampling chamber. The presence and concentration of various agents in the gas sample are determined by a linear variable filter that selectively passes the light beam transmitted through the gas sample chamber to an array of detectors. The detectors are positioned to receive only a narrow passband component of the light beam. The output signals from the array of detectors is processed by a multivariate statistical processor to accurately identify both the presence and concentration of one or more agents contained in the gas sample.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: March 24, 1998
    Assignee: Ohmeda Inc.
    Inventors: Russell John Fischer, Clement Lim Yu, Patrick Francis Crane, Stephen Daniel Walker
  • Patent number: 5579800
    Abstract: An improved rotary valve indicator apparatus (10) and method is disclosed that includes an electronics switch housing (15), filled with epoxy or other generally elastomeric material (29) to hermetically seal, thus environmentally seal, the switch housing (15). A pair of hermetically sealed reed switches (30, 32) are employed within the electronics switch housing (15) for indicating the open and closed position of the valve (17). A pair of corresponding magnets (26, 28) are mounted within a separate magnet holder (16) that is mounted to a rotatable member (20) of a rotary valve actuator (13). Light emitting diodes (42, 44) radiate from a side portion (57) of the electronics switch housing (15) and are connected in a manner whereby they indicate not only that the respective switch (30, 32) is closed but also that it is conducting electricity.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: December 3, 1996
    Assignee: Keystone International Holdings Corp.
    Inventor: Daniel Walker
  • Patent number: 5518028
    Abstract: An adjustable magnet carrier 100 for a rotary valve indicator apparatus 10 is disclosed. The adjustable magnet carrier 100 includes an extension member 117 having an extension member body 118, an extension member body top 119, and an extension body base 121. Upper and lower magnet carriers 144, 146 selectively rotate about extension member 117 to adjust the stand-off between the magnets 102, 104 and the magnetically responsive switches 30, 32. The magnetically responsive switches are hermetically sealed within a separate electronics switch housing 15. Light-emitting diodes 42, 44 radiate from electronics switch housing 15 in response to switches 30, 32. Drive shafts 124, 128 rotate the magnet carriers 144, 146. The outer surfaces of the upper and lower magnet carriers 144, 146, the ends of drive shafts 124, 128, and the light-emitting diodes 42, 44 are color-coded to correspond to each other and to the open and closed positions of rotary valve element 19.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: May 21, 1996
    Assignee: Keystone International Holdings Corp.
    Inventor: Daniel Walker