Patents by Inventor WENJUN TIAN

WENJUN TIAN 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).

  • Publication number: 20160122521
    Abstract: A low dissipation factor resin composition comprises: (A) 100 to 150 parts by weight of a vinyl-containing compound or a polymer thereof; (B) 0 to 75 parts by weight of styrene-butadiene-divinylbenzene terpolymer, styrene-butadiene-maleic anhydride terpolymer, vinyl functional polybutadiene urethane oligomer or a combination thereof; (C) 30 to 150 parts by weight of flame retardant; and (D) 0.1 to 10 parts by weight of peroxide. The resin composition and a product made thereby are applicable to a copper-clad laminate and a printed circuit board, characterized by having low dissipation factor at high frequency and satisfactory thermal resistance and thermal expansion.
    Type: Application
    Filed: June 4, 2015
    Publication date: May 5, 2016
    Inventors: Rongtao WANG, Chen-Yu HSIEH, Wenfeng LV, Wenjun TIAN, Yu GAO, Ningning JIA, Ziqian MA
  • Publication number: 20150376399
    Abstract: The present invention relates to a water curable resin formulation comprising: (a) an epoxy resin; (b) an aromatic amine curing agent, wherein the molar ratio of amine functional groups in said curing agent relative to the epoxy functional groups of said epoxy resin is 2:1 or less; and (c) a coupling agent comprising a siloxane group coupled to an epoxy reactive group.
    Type: Application
    Filed: September 4, 2015
    Publication date: December 31, 2015
    Applicant: Petroliam Nasional Berhad (Petronas)
    Inventors: Kok Hoong Leong, Yin Liong Leong, Wendy Wenjun Tian, Jonathan Howard Hodgkin, Song Gao, Karen Anne Kozielski, Colin David Wood
  • Patent number: 9131607
    Abstract: A halogen-free resin composition includes (A) 100 parts by weight of naphthalene epoxy resin; (B) 10 to 100 parts by weight of styrene maleic anhydride copolymer; and (C) 30 to 70 parts by weight of DOPO-containing bisphenol F novolac resin. The halogen-free resin composition includes specific ingredients, and is characterized by specific proportions thereof, to thereby attain a low dielectric constant, a low dielectric dissipation factor, high heat resistance, and high flame retardation, and thus is suitable for producing a prepreg or a resin film to thereby be applicable to copper clad laminates and printed circuit boards.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: September 8, 2015
    Assignee: ELITE ELECTRONIC MATERIAL (KUNSHAN) CO., LTD.
    Inventors: Rong-Tao Wang, Tse-An Lee, Yi-Jen Chen, Wenjun Tian, Ziqian Ma, Wenfeng Lu
  • Publication number: 20150044485
    Abstract: The present invention provides a resin composition useful for a copper-clad laminate and a printed circuit board, wherein the resin composition comprises the following components: (A) 100 parts by weight of vinyl-containing polyphenylene ether resin; (B) 5 to 50 parts by weight of maleimide; (C) 10 to 100 parts by weight of styrene-butadiene copolymer; and (D) 5 to 30 parts by weight of cyanate ester resin. The present invention also provides a resin composition and an article made therefrom having low dissipation factor at high frequency and excellent thermal resistance and peeling strength and being useful for a copper-clad laminate and a printed circuit board.
    Type: Application
    Filed: January 31, 2014
    Publication date: February 12, 2015
    Applicant: Elite Electronic Material (kunShan) Co., Ltd.
    Inventors: Rongtao WANG, Chen Yu HSIEH, Wenjun TIAN, Ziqian MA, Wenfeng LV
  • Publication number: 20140322541
    Abstract: A halogen-free resin composition, a copper clad laminate using the same, and a printed circuit board using the same are introduced. The halogen-free resin composition comprising (A) 100 parts by weight of epoxy resin; (B) 3 to 15 parts by weight of diaminodiphenyl sulfone (DDS); and (C) 5 to 70 parts by weight of phenolic co-hardener. The halogen-free resin composition features specific ingredients and proportion to thereby achieve satisfactory maximum preservation period of the prepreg manufactured from the halogen-free resin composition, control the related manufacturing process better, and attain satisfactory laminate properties, such as a high degree of water resistance, a high degree of heat resistance, and satisfactory dielectric properties, and thus is suitable for producing a prepreg or a resin film to thereby be applicable to copper clad laminates and printed circuit boards.
    Type: Application
    Filed: August 10, 2013
    Publication date: October 30, 2014
    Applicant: Elite Electronic Material (Kunshan) Co., Ltd
    Inventors: RONG-TAO WANG, LI-CHIH YU, YU-TE LIN, YI-JEN CHEN, WENJUN TIAN, ZIQIAN MA, WENFENG LU
  • Publication number: 20140113118
    Abstract: A halogen-free resin composition including (A) 100 parts by weight of polyphenylene ether resin containing an alkenyl group; (B) 10 to 50 parts by weight of cyclo olefin copolymer (COC); (C) 5 to 50 parts by weight of 1,2,4-trivinylcyclohexane resin and/or 1,3,5-triethyloxymethyl cyclohexane resin; and (D) 5 to 150 parts by weight of polyphenylene ether pre-polymerized branch cyanate ester. The halogen-free resin composition can manifest low dielectric constant, low dielectric dissipation factor, high heat resistance, and high glass transition temperature by using the specified ingredient in the specified ratio, thus can be used in preparing a prepreg or a resin film, which is applicable to copper clad laminates and printed circuit boards.
    Type: Application
    Filed: January 11, 2013
    Publication date: April 24, 2014
    Applicant: ELITE ELECTRONIC MATERIAL (KUNSHAN) CO., LTD
    Inventors: RONG-TAO WANG, CHEN-YU HSIEH, ZIQIAN MA, WENJUN TIAN, WENFENG LU
  • Publication number: 20120245284
    Abstract: The present invention relates to a water curable resin formulation comprising: (a) an epoxy resin; (b) an aromatic amine curing agent, wherein the molar ratio of amine functional groups in said curing agent relative to the epoxy functional groups of said epoxy resin is 2:1 or less; and (c) a coupling agent comprising a siloxane group coupled to an epoxy reactive group.
    Type: Application
    Filed: November 25, 2010
    Publication date: September 27, 2012
    Applicant: Petroliam Nasional Berhad (Petronas)
    Inventors: Kok Hoong Leong, Yin Liong Leong, Wendy Wenjun Tian, Jonathan Howard Hodgkin, Song Gao, Karen Anne Kozielski, Colin David Wood