Patents by Inventor Steven V. Ley

Steven V. Ley 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 synthesizing compound and catalyst for synthesis reaction
    Patent number: 7476750
    Abstract: To provide a catalyst for synthesis reaction which can achieve good yield in the Sonogashira reaction and also can be recovered after the reaction, and a method for synthesizing a compound in which the catalyst for synthesis reaction is used, a perovskite-type composite oxide containing palladium is used as the catalyst for synthesis reaction in the Sonogashira reaction represented by the following reaction scheme (1): R1—X+HC?CR2?R1C?CR2??(1)
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: January 13, 2009
    Assignees: Cambridge University Technical Services Limited, Daihatsu Motor Co., Ltd., Hokko Chemical Idustry Co., Ltd.
    Inventors: Steven V. Ley, Martin D. Smith, Sophie Lohmann, Steven P. Andrews, J. Paul Attfield, Hirohisa Tanaka, Kimiyoshi Kaneko
  • Synthesizing method for compound, and catalyst for synthesis reaction
    Patent number: 7411082
    Abstract: A catalyst for synthesis reaction that can allow the cross coupling reaction at an improved yield, and yet can be collected after used for the reaction and recycled, and a synthesizing method for a compound using the same catalyst for synthesis reaction.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: August 12, 2008
    Assignees: Cambridge University Technical Services Ltd., Daihatsu Motor Co., Ltd
    Inventors: Steven V. Ley, Martin D. Smith, Chandrashekar Ramarao, Antonia F. Stepan, Hirohisa Tanaka
  • Oxidation process using tellurium oxide catalysts
    Patent number: 4370497
    Abstract: The present invention relates to the use of telluroxides as mild and selective oxidizing agents serving to oxidize certain functions, notably >C.dbd.S groups, in the presence of other relatively easily oxidized functions which remain unaffected; telluroxides of interest as oxidizing agents include, for example, compounds of the formula: ##STR1## wherein R and R.sup.1, which may be the same or different, each represent an optionally substituted aryl or heterocyclic group; or R and R.sup.1 together with the tellurium atom therebetween represent a heterocyclic ring, which may contain one or more further heteroatoms, and which may carry substituents and/or fused aromatic rings.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: January 25, 1983
    Inventors: Derek H. R. Barton, Steven V. Ley, Clive A. Meerholz
  • Chemical processes
    Patent number: 4220588
    Abstract: .alpha.,.beta.-Unsaturated aldehydes and ketones are prepared by reaction of an arylseleninic anhydride with an aldehyde or ketone having at least one hydrogen atom in the .alpha.-position which is or can be in the syn-configuration with respect to at least one hydrogen atom in the said .beta.-position. The ketones used as starting material especially include perhydrophenanthrene ketones such as steroid ketones and the arylseleninic anhydride used may for example be benzeneseleninic anhydride.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: September 2, 1980
    Inventors: Derek H. R. Barton, David J. Lester, Steven V. Ley