Patents by Inventor Takahisa Doba

Takahisa Doba 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: 8053587
    Abstract: This invention relates to thermosetting resin compositions useful for mounting onto a circuit board semiconductor devices, such as CSPs, BGAs, LGAs and the like, each of which having a semiconductor chip, such as LSI, on a carrier substrate. The compositions of this invention are reworkable when subjected to appropriate conditions.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 8, 2011
    Assignee: Henkel Corporation
    Inventors: Philip T. Klemarczyk, Andrew D. Messana, Afranio Torres-Filho, Erin K. Yeager, Takahisa Doba
  • Publication number: 20080214840
    Abstract: This invention relates to thermosetting resin compositions useful for mounting onto a circuit board semiconductor devices, such as CSPs, BGAs, LGAs and the like, each of which having a semiconductor chip, such as LSI, on a carrier substrate. The compositions of this invention are reworkable when subjected to appropriate conditions.
    Type: Application
    Filed: December 20, 2007
    Publication date: September 4, 2008
    Applicant: Henkel Corporation
    Inventors: Philip T. Klemarczyk, Andrew D. Messana, Afranio Torres-Filho, Erin K. Yaeger, Takahisa Doba
  • Patent number: 7012120
    Abstract: This invention relates to thermosetting resin compositions useful for mounting onto a circuit board semiconductor devices, such as CSPs, BGAs, LGAs and the like, each of which having a semiconductor chip, such as LSI, on a carrier substrate. The compositions of this invention are reworkable when subjected to appropriate conditions.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: March 14, 2006
    Assignee: Henkel Corporation
    Inventors: Philp T. Klemarczyk, Andrew D. Messana, Afranio Torres-Filho, Erin K. Yaeger, Takahisa Doba
  • Publication number: 20050288458
    Abstract: This invention relates to thermosetting resin compositions useful for mounting onto a circuit board semiconductor devices, such as CSPs, BGAs, LGAs and the like, each of which having a semiconductor chip, such as LSI, on a carrier substrate. The compositions of this invention are reworkable when subjected to appropriate conditions.
    Type: Application
    Filed: December 8, 2004
    Publication date: December 29, 2005
    Inventors: Philip Klemarczyk, Andrew Messana, Afranio Torres-Filho, Erin Yaeger, Takahisa Doba
  • Publication number: 20050171301
    Abstract: The present invention provides a thermosetting resin composition useful as an underfilling sealing resin which enables a semiconductor device, such as a CSP/BGA/LGA assembly which includes a semiconductor chip mounted on a carrier substrate, to be securely connected to a circuit board by short-time heat curing and with good productivity, which demonstrates excellent heat shock properties (or thermal cycle properties), and permits the CSP/BGA/LGA assembly to be easily removed from the circuit board in the event of semiconductor device or connection failure.
    Type: Application
    Filed: July 9, 2001
    Publication date: August 4, 2005
    Inventor: Takahisa Doba
  • Publication number: 20040155364
    Abstract: The present invention provides a thermosetting resin composition useful as an underfilling sealing resin which enables a semiconductor device, such as a CSP/BGA/LGA assembly which includes a semiconductor chip mounted on a carrier substrate, to be securely connected to a circuit board by short-time heat curing and with good productivity, which demonstrates excellent heat shock properties (or thermal cycle properties); and permits the CSP/BGA/LGA assembly to be easily removed from the circuit board in the event of semiconductor device or connection failure. Similarly, the compositions are useful for mounting onto a circuit board semiconductor chips themselves.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 12, 2004
    Inventor: Takahisa Doba
  • Publication number: 20030073770
    Abstract: This invention relates to thermosetting resin compositions useful for mounting onto a circuit board semiconductor devices, such as CSPs, BGAs, LGAs and the like, each of which having a semiconductor chip, such as LSI, on a carrier substrate. The compositions of this invention are reworkable when subjected to appropriate conditions.
    Type: Application
    Filed: July 29, 2002
    Publication date: April 17, 2003
    Inventors: Philip T Klemarczyk, Andrew D Messana, Afranio Torres-Filho, Erik K Yaeger, Takahisa Doba
  • Patent number: 5445918
    Abstract: High sensitivity photopolymerisable compositions comprising a polymerisable ethylenically unsaturated compound and a photoinitiator composition comprising a titanocene compound and N-phenylglycine or a derivative thereof.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: August 29, 1995
    Assignee: Zeneca Limited
    Inventors: Takahisa Doba, Bunya Watanabe
  • Patent number: 5387445
    Abstract: A liquid crystal display device including two electrically insulating substrates, electrodes on the inner surfaces of the substrates, a film of liquid crystal material contained between the electrodes and a resinous material as sealant and/or encapsulant and/or inner structural component characterised in that the resinous material is the product of light-curing a light-curable resin composition comprising at least one compound having two or more non-aromatic carbon-carbon unsaturated bonds per molecule, at least one compound having two or more mercapto groups per molecule and a photoinitiator.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: February 7, 1995
    Assignee: Zeneca Limited
    Inventors: Shin Horiuchi, Sumio Wakabayashi, Takahisa Doba