Patents by Inventor David Blythin

David Blythin 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: 7511062
    Abstract: The invention claims compounds of the formula wherein is a 5-membered heteroaryl; X is S or O; R1 is H, alkyl, cycloalkyl, cylcoalkylalkyl-, —CH2F, —CHF2, —CF3, —C(O)alkyl or —C(O)NR18R19; R3 and R4 H, alkyl, hydroxyalkyl or —C(O)Oalkyl; R5 and R6 are H, alkyl, hydroxyalkyl, alkoxyalkyl, mercaptoalkyl, —CH2F, —CHF2, —CF3, —C(O)OH or —C(O)Oalkyl; R7 is H, alkyl, alkenyl, hydroxyalkyl, cycloalkyl, alkoxyalkyl, aminoalkyl, (R17-phenyl)alkyl or —CH2—C(O)—O-alkyl; and R8 comprises alkyl, heteroaryl, phenyl or cycloalkyl, or heterocycloalkyl, all optionally substituted, or a cycloalkyl- or heterocycloalkyl-substituted amide; or R7 and R8 and the nitrogen to which they are attached together form an optionally substituted ring; and the remaining variables are as defined in the specification. Also claimed are pharmaceutical compositions, the use of the compounds as PDE4 inhibitors, and combinations with other actives.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: March 31, 2009
    Assignee: Schering Corporation
    Inventors: Rongze Kuang, David Blythin, Neng-Yang Shih, Ho-Jane Shue, Xiao Chen, Jianhua Cao, Danlin Gu, Ying Huang, John H. Schwerdt, Pauline C. Ting, Shing-Chun Wong, Li Xiao
  • Publication number: 20080108818
    Abstract: Disclosed are maleate, tosylate, fumarate, and oxalate salts of the compound 5-(1(S)-Amino-2-Hydroxyethyl)-N-[(2,4-Difluorophenyl)-Methyl]-2-[8-Methoxy-2-(Trifluoromethyl)-5-Quinoline]-4-Oxazolecarboxamide, represented by Formula I, and methods of preparing the same.
    Type: Application
    Filed: August 10, 2007
    Publication date: May 8, 2008
    Inventors: Xiaoming Chen, Xiao Chen, Jianguo Yin, Xiaoyong Fu, David Blythin, Rongze Kuang, Ho-Jane Shue, Scott Trzaska, Chee-Wah Tang, Vincenzo Liotta, Zaher Shabani
  • Publication number: 20060106062
    Abstract: The invention claims compounds of the formula wherein is a 5-membered heteroaryl; X is S or O; R1 is H, alkyl, cycloalkyl, cylcoalkylalkyl-, —CH2F, —CHF2, —CF3, —C(O)alkyl or —C(O)NR18R19; R3 and R4H, alkyl, hydroxyalkyl or —C(O)Oalkyl; R5 and R6 are H, alkyl, hydroxyalkyl, alkoxyalkyl, mercaptoalkyl, —CH2F, —CHF2, —CF3, —C(O)OH or —C(O)Oalkyl; R7 is H, alkyl, alkenyl, hydroxyalkyl, cycloalkyl, alkoxyalkyl, aminoalkyl, (R17-phenyl)alkyl or —CH2—C(O)—O-alkyl; and R8 comprises alkyl, heteroaryl, phenyl or cycloalkyl, or heterocycloalkyl, all optionally substituted, or a cycloalkyl- or heterocycloalkyl-substituted amide; or R7 and R8 and the nitrogen to which they are attached together form an optionally substituted ring; and the remaining variables are as defined in the specification. Also claimed are pharmaceutical compositions, the use of the compounds as PDE4 inhibitors, and combinations with other actives.
    Type: Application
    Filed: May 16, 2005
    Publication date: May 18, 2006
    Inventors: Rongze Kuang, David Blythin, Neng-Yang Shih, Ho-Jane Shue, Xiao Chen, Jianhua Cao, Danlin Gu, Ying Huang, John Schwerdt, Pauline Ting, Shing-Chun Wong, Li Xiao
  • Patent number: 4405810
    Abstract: 7-arylhept-5-ynoic acids and derivatives thereof are anti-allergy and anti-inflammatory agents. As such, they are useful in the treatment of allergy-caused diseases, particularly chronic obstructive lung diseases.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: September 20, 1983
    Assignee: Schering Corporation
    Inventors: David Blythin, Michael J. Green