Patents by Inventor Jianguang Lei

Jianguang Lei 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).

  • Coumarin compounds and method for preparing and using the same
    Patent number: 7259265
    Abstract: 4-Substituted coumarin compounds having the general formula of where R is H, CHO, OCH3, X, NO2, an alkyl having C1-10, —OCH2O—, an aryl being mono- or poly-substituted with CN or COOCH3 with the aryl being a phenyl, naphthyl, or azaryl, or a coumarin group that is substituted with R1, R2, R3, R4, with R1, R2, R3, and R4 being H, an alkyl having C1-10, X, NO2, CN, OCH3, COOCH3 or OR5, R5 being H or an alkyl having C1-10, and X being a halogen.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: August 21, 2007
    Assignee: Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
    Inventors: Guoqiang Lin, Jianguang Lei, Minghua Xu, Jin Ren
  • Coumarin compounds and method for preparing and using the same
    Publication number: 20060063806
    Abstract: 4-Substituted coumarin compounds having the general formula of where R is H, CHO, OCH3, X, NO2, an alkyl having C1-10, —OCH2O—, an aryl being mono- or poly-substituted with CN or COOCH3 with the aryl being a phenyl, naphthyl, or azaryl, or a coumarin group that is substituted with R1, R2, R3, R4, with R1, R2, R3, and R4 being H, an alkyl having C1-10, X, NO2, CN, OCH3, COOCH3 or OR5, R5 being H or an alkyl having C1-10, and X being a halogen.
    Type: Application
    Filed: November 15, 2005
    Publication date: March 23, 2006
    Applicant: SHANGHAI INSTITUTE OF ORGANIC CHEMESTRY CHINESE ACADEMY OF SCIENCE
    Inventors: Guoqiang Lin, Jianguang Lei, Minghua Xu, Jin Ren