Patents by Inventor Yu-Chih Yeh

Yu-Chih Yeh 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: 8546114
    Abstract: The present invention relates to novel processes for preparing optically active Cyclopentenones of Formula (R)-1, which are useful for the preparation of Prostaglandins and analogs thereof. The invention also relates to novel Cyclopentenones prepared from the processes.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: October 1, 2013
    Assignee: Chirogate International Inc.
    Inventors: Yu-Chih Yeh, Ming-Kun Hsu, Shih-Yi Wei
  • Publication number: 20130244000
    Abstract: The present invention is related to a chip on film package, comprising a polyimide copper clad laminate and the process of making the same. The laminate comprises a layer of polyimide and a layer of copper foil, wherein the polyimide layer is made from a polyimide precursor comprising a diamine monomer, a dianhydride monomer, an organic solvent and a silane coupling agent having one or more organic functional groups, and the copper foil is a smooth copper foil. The polyimide layer of the present invention provides high transparency, good dimensional stability, good mechanical properties and good adhesion to the copper foil.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 19, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Yu-Jean Chen, Brian C. Auman, Sheng-Yu Huang, Tsutomu Mutoh, Ming-Te We, Yu-Chih Yeh
  • Patent number: 8350090
    Abstract: The present invention provides novel processes of preparing racemic and optically active cyclopentenones of Formula I: The invention also provides novel cyclopentenones of formula I in racemic or optically active form.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: January 8, 2013
    Assignee: Chirogate International Inc.
    Inventors: Shih-Yi Wei, Wan-Chun Chang, Yu-Chih Yeh
  • Patent number: 8030514
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and ?are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: October 4, 2011
    Assignee: Chirogate International Inc.
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20100323161
    Abstract: The present invention is related to a polyimide copper clad laminate and the process of making the same. The laminate comprises a layer of polyimide and a layer of copper foil, wherein the polyimide layer is made from a polyimide precursor comprising a diamine monomer, a dianhydride monomer, an organic solvent and a silane coupling agent having one or more organic functional groups, and the copper foil is a smooth copper foil. The polyimide layer of the present invention provides high transparency, good dimensional stability, good mechanical properties and good adhesion to the copper foil.
    Type: Application
    Filed: January 30, 2009
    Publication date: December 23, 2010
    Applicant: E. I. Du Pont De Nemours and Company
    Inventors: Yu-Jean Chen, Brian C. Auman, Sheng-Yu Huang, Tsutomu Mutoh, Ming-Te We, Yu-Chih Yeh
  • Patent number: 7755925
    Abstract: A static random access memory comprising a column driver, a row driver, a cell, and a control unit is disclosed. The column driver selects a first word line or a second word line. The row provides data to a first bit line and a second bit line. The data of the first bit line is opposite to that of the second bit line. The control unit controls the voltage of the cell. In normal mode, the voltage of the cell is equal to a second voltage. In stand-by mode, the voltage of the cell exceeds the second voltage.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: July 13, 2010
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Jui-Lung Chen, Gia-Hua Hsieh, Yi-Hsun Chung, Chia-Chiuan Chang, Yu-Chih Yeh, Ho-Hsiang Chen
  • Publication number: 20090299088
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Application
    Filed: August 11, 2009
    Publication date: December 3, 2009
    Inventors: Shih-Yi WEI, Yu-Chih Yeh
  • Patent number: 7626024
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: December 1, 2009
    Assignee: Irogate International Inc.
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Patent number: 7582779
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: September 1, 2009
    Assignee: Chirogate International Inc.
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20090197104
    Abstract: The present invention is related to a polyimide copper clad laminate and the process of making the same. The laminate comprises a layer of polyimide and a layer of copper foil, wherein the polyimide layer is made from a polyimide precursor comprising a diamine monomer, a dianhydride monomer, an organic solvent and a silane coupling agent having one or more organic functional groups, and the copper foil is a smooth copper foil. The polyimide layer of the present invention provides high transparency, good dimensional stability, good mechanical properties and good adhesion to the copper foil.
    Type: Application
    Filed: May 8, 2008
    Publication date: August 6, 2009
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Yu-Jean Chen, Brian C. Auman, Sheng-Yu Huang, Tsutomu Mutoh, Ming-Te We, Yu-Chih Yeh
  • Patent number: 7511168
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: March 31, 2009
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20080137398
    Abstract: A static random access memory comprising a column driver, a row driver, a cell, and a control unit is disclosed. The column driver selects a first word line or a second word line. The row provides data to a first bit line and a second bit line. The data of the first bit line is opposite to that of the second bit line. The control unit controls the voltage of the cell. In normal mode, the voltage of the cell is equal to a second voltage. In stand-by mode, the voltage of the cell exceeds the second voltage.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 12, 2008
    Inventors: Jui-Lung Chen, Gia-Hua Hsieh, Yi-Hsun Chung, Chia-Chiuan Chang, Yu-Chih Yeh, Ho-Hsiang Chen
  • Publication number: 20080039637
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 14, 2008
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20080039627
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 14, 2008
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20070167641
    Abstract: The present invention provides novel processes for the preparation of a cyclopentanone of Formula II and a lactone of Formula I, which are useful in the production of prostaglandins: wherein Z, R2, R3, X1, X2, and are as defined in the specification. The invention also provides novel enantiomerically enriched compounds.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 19, 2007
    Inventors: Shih-Yi Wei, Yu-Chih Yeh
  • Publication number: 20070166809
    Abstract: The present invention relates to novel processes for preparing optically active Cyclopentenones of Formula (R)-1, which are useful for the preparation of Prostaglandins and analogs thereof. The invention also relates to novel Cyclopentenones prepared from the processes.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 19, 2007
    Inventors: Yu-Chih Yeh, Ming-Kun Hsu, Shih-Yi Wei