Patents by Inventor James Matthew Stephens

James Matthew Stephens 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).

  • Apparatus and method for removing interfering substances from a urine sample using a chemical oxidant
    Patent number: 7045098
    Abstract: Urine samples are made free of potentially interfering substances, such as alkaloids or pharmaceuticals, by contacting the urine sample with an amount of a chemical oxidizing agent in a disposable oxidation bag, while retaining the physical indicia characteristic of urine to allow the sample to be further tested.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: May 16, 2006
    Inventor: James Matthew Stephens
  • Method and kit for making interfering substances in urine undetectable
    Publication number: 20030022390
    Abstract: The present system comprises a method and a kit for making interfering substances undetectable in urine. The system includes a method for making interfering substances in urine undetectable comprising providing an oxidizing compound and providing a masking compound. A urine sample is collected, contacted with the oxidizing compound, and contacted with the masking compound to remove any potentially interfering substances from the urine. A kit for making interfering substances in urine undetectable is also disclosed. The kit comprises an oxidizing compound and a masking compound.
    Type: Application
    Filed: May 30, 2002
    Publication date: January 30, 2003
    Inventor: James Matthew Stephens
  • APPARATUS AND METHOD FOR REMOVING INTERFERING SUBSTANCES FROM A URINE SAMPLE USING AN OXIDIZING AGENT
    Publication number: 20020061563
    Abstract: Urine samples are made free of potentially interfering substances, such as alkaloids or pharmaceuticals, by contacting the urine sample with an amount of a chemical oxidizing agent in a disposable oxidation bag, while retaining the physical indicia characteristic of urine to allow the sample to be further tested.
    Type: Application
    Filed: February 2, 2001
    Publication date: May 23, 2002
    Inventor: James Matthew Stephens
  • Method for removing interfering substances from a urine sample using a chemical oxidant
    Patent number: 6162647
    Abstract: Urine samples are made free of potentially interfering substances, such as alkaloids or pharmaceuticals, by contacting the urine sample with an amount of a chemical oxidizing agent, while retaining the physical indicia characteristic of urine to allow the sample to be further tested.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: December 19, 2000
    Inventor: James Matthew Stephens