Patents by Inventor Takaumi Kimura

Takaumi Kimura 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).

  • Method for extraction of metals by methyliminobisalkylacetamide
    Patent number: 7968064
    Abstract: The present invention provides a method for extraction of metals selected from Cr, Mo, Pd, Tc, W, Re, and Pu using a new extractant of methyliminobisalkylacetamide represented by a formula (I): CH3—N—(CH2CONR2)2??(I) wherein R represents an alkyl group having 8-12 carbon atoms.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: June 28, 2011
    Assignee: Japan Atomic Energy Agency
    Inventors: Yuji Sasaki, Yoshihiro Kitatsuji, Takaumi Kimura, Makoto Arisaka
  • Method for extraction of metals by methyliminobisalkylacetamide
    Publication number: 20100099938
    Abstract: The present invention provides a method for extraction of metals selected from Cr, Mo, Pd, Tc, W, Re, and Pu using a new extractant of methyliminobisalkylacetamide represented by a formula (I): CH3—N—(CH2CONR2)2 ??(I) wherein R represents an alkyl group having 8-12 carbon atoms.
    Type: Application
    Filed: August 20, 2009
    Publication date: April 22, 2010
    Applicant: JAPAN ATOMIC ENERGY AGENCY
    Inventors: Yuji Sasaki, Yoshihiro Kitatsuji, Takaumi Kimura, Makoto Arisaka
  • Method of measuring the absorption spectra of solutions by laser induced photothermal displacement spectroscopy
    Patent number: 5926273
    Abstract: Improved method of laser induced photothermal displacement spectroscopy comprises the steps of applying pulsed laser light to the solution in a sample container, whereupon the light energy absorbed by the solution is converted to heat, with the resulting elastic wave displacing the wall of the sample container by vibrations, detecting the displacement by heterodyne interferometry, and measuring the absorption spectrum of the solution.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: July 20, 1999
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Takaumi Kimura, Yoshiharu Kato, Zenko Yoshida
  • Process for producing an extraction chromatography resin
    Patent number: 5580952
    Abstract: A process for producing a resin for the chromatographic extraction of metal ions is provided, the process involving:treating an acidic bidentate organic phosphonate metal complexing agent with an alcohol or ketone solvent containing an aqueous alkaline solution, thereby forming the corresponding salt of the phosphonate compound;mixing the bidentate organic phosphonate salt with an absorbent resin in an alcohol or ketone solvent containing an aqueous alkaline solution, thereby absorbing the phosphonate salt in the resin;washing the resin containing bidentate complexing agent with an aqueous alcohol or ketone solution; anddrying the washed resin, wherein the process provides improved chromatographic extraction of metal ions.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: December 3, 1996
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Johkun Akatsu, Takaumi Kimura