Patents by Inventor Shouichi Sasaki

Shouichi Sasaki 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: 8481428
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive of which surface has been modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: July 9, 2013
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Publication number: 20120064721
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive of which surface has been modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Patent number: 8084363
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive of which surface has been modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: December 27, 2011
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Patent number: 8084362
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive, wherein the surface of the abrasive is modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: December 27, 2011
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Patent number: 7994058
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive, wherein the surface of the abrasive is modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: August 9, 2011
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Publication number: 20090156007
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive of which surface has been modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Application
    Filed: February 4, 2009
    Publication date: June 18, 2009
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Publication number: 20070232197
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive, wherein the surface of the abrasive is modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Application
    Filed: May 25, 2007
    Publication date: October 4, 2007
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Publication number: 20050050803
    Abstract: The present invention relates to polishing slurry and polishing method used for polishing in a process for forming wirings of a semiconductor device, and the like. There are provided polishing slurry giving a polished surface having high flatness even if the polished surface is made of two or more substances, and further, capable of suppressing metal residue and scratches after polishing, and a method of chemical mechanical polishing using this. The polishing slurry of the present invention is polishing slurry containing at least one of a surfactant and an organic solvent, and a metal oxide dissolving agent and water, or polishing slurry containing water and abrasive of which surface has been modified with an alkyl group, and preferably, it further contains a metal oxidizer, water-soluble polymer, and metal inhibitor.
    Type: Application
    Filed: October 31, 2002
    Publication date: March 10, 2005
    Inventors: Jin Amanokura, Takafumi Sakurada, Sou Anzai, Masato Fukasawa, Shouichi Sasaki
  • Patent number: 6042740
    Abstract: A composition for forming an electrolyte for a solid electrolytic capacitor having excellent electric properties (capacitance, equivalent series resistance, dielectric loss, impedance, etc.) in a frequency zone ranging from a low frequency to a high frequency, and is capable of easily forming a high yield of the solid electrolytic capacitor having an excellent resistance to stress in the steps and a high thermal resistance, and a solid electrolytic capacitor produced from the electrolyte. The composition comprises (A) an aniline compound, (B) an organic sulfonic acid, (C) water, (D) an organic solvent, and if necessary, (E) a specified compound.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: March 28, 2000
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Hideaki Uehara, Toru Yoshikawa, Yan Hu, Shouichi Sasaki, Yasuhiro Yano, Takafumi Doudou