Patents by Inventor R. Dale Delk

R. Dale Delk 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: 6270637
    Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: August 7, 2001
    Assignee: Roche Diagnostics Corporation
    Inventors: William F. Crismore, Nigel A. Surridge, Daniel R. McMinn, Richard J. Bodensteiner, Eric R. Diebold, R. Dale Delk, David W. Burke, Jiaxiong Jason Ho, Robert Kitchel Earl, Brian A. Heald
  • Patent number: 5997817
    Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a "fill to here" line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called "dose hesitation".
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: December 7, 1999
    Assignee: Roche Diagnostics Corporation
    Inventors: William F. Crismore, Nigel A. Surridge, Daniel R. McMinn, Richard J. Bodensteiner, Eric R. Diebold, R. Dale Delk, David W. Burke, Jiaxiong Jason Ho, Robert Kitchel Earl, Brian A. Heald
  • Patent number: RE41309
    Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called “dose hesitation”.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: May 4, 2010
    Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.
    Inventors: William F. Crismore, Nigel A. Surridge, Daniel R. McMinn, Richard J. Bodensteiner, Eric R. Diebold, R. Dale Delk, David W. Burke, Jiaxiong Jason Ho, Robert Kitchel Earl, Brian A. Heald
  • Patent number: RE42953
    Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called “dose hesitation”.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: November 22, 2011
    Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.
    Inventors: William F. Crismore, Nigel A. Surridge, Richard J. Bodensteiner, Eric R. Diebold, R. Dale Delk, David W. Burke, Jiaxiong Jason Ho