Patents Assigned to The Unites States of America as represented by the Secretary of Commerce
  • Headspace sampling device and method for sampling
    Patent number: 9746399
    Abstract: A device and method for headspace sampling is disclosed herein. The headspace sampling device comprises a sample holding device configured to be sealed in a vial. The sample holding device has a pair of electrodes gap spaced from one another and a basket extending between the electrodes configured to hold a sample. The basket is configured to heat a sample held therewith and volatize at least a portion of the sample upon an electrical current being passed through the electrodes and the basket.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: August 29, 2017
    Assignee: The Unites States of America as represented by the Secretary of Commerce, The National Institute of Standards and Technology
    Inventor: Thomas J. Bruno
  • Ion specific chelating agents derived from .beta.-hydroxyhistidine, 4-(1-hydroxy-1-alkyl)imidazole and derivatives thereof
    Patent number: 5371234
    Abstract: .beta.-hydroxyhistidine, 4-(1-hydroxy-1-alkyl)imidazole or derivatives thereof can be used as a bidentate ligand in the chelation of iron(III), Al(III), Cr(III), Ga(III) and the actinides(IV), such as plutonium 238. .beta.-hydroxyhistidine is found in a pyoverdine-type siderophore produced by Pseudomonas fluorescens 244.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: December 6, 1994
    Assignee: The Unites States of America as represented by the Secretary of Commerce
    Inventor: Diane K. Hancock