Patents by Inventor Shinichi Sakamaki
Shinichi Sakamaki 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).
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Patent number: 8446671Abstract: A display panel is provided with a solar cell, a light transmitting substrate arranged on a side of the solar cell to be seen, and a reflective polarizing plate. An uneven pattern is arranged on at least one surface of the reflective polarizing plate. The pattern desirably has concave and convex shape formed on at least one surface of the reflective polarizing plate. The respective concave and convex patterns may be different from each other. The reflective polarizing plate is provided with a light reflection axis and a light transmission easy axis.Type: GrantFiled: August 9, 2007Date of Patent: May 21, 2013Assignee: Citizen Holdings Co., Ltd.Inventors: Teruyuki Omata, Koichi Takano, Masaaki Watanabe, Nobuo Ito, Katsuyuki Yamaguchi, Shinichi Sakamaki
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Publication number: 20130094333Abstract: A timepiece display plate, while obtaining reflection light having metal texture, allows partial light as a transmissive light to transmit to a solar cell and easily adapt to various types of dial plates. A timepiece display plate (150) for a timepiece (200) having a plate-like solar cell (130), includes a light transmissive dial plate (151) and a brightness improving film (brightness improving plate) separately disposed between the light transmissive dial plate (151) and the solar cell (130).Type: ApplicationFiled: June 23, 2011Publication date: April 18, 2013Applicants: CITIZEN HOLDINGS CO., LTD., YAMAMOTO MANUFACTURING CO., LTD., CITIZEN WATCH CO., LTD.Inventors: Nobuo Ito, Takayuki Waseda, Shinichi Sakamaki, Hiroshi Ikebuchi, Yutaka Sugihara, Shigeo Kaneko
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Publication number: 20100053752Abstract: A display panel is provided with a solar cell, a light transmitting substrate arranged on a side of the solar cell to be seen, and a reflective polarizing plate. An uneven pattern is arranged on at least one surface of the reflective polarizing plate.Type: ApplicationFiled: August 9, 2007Publication date: March 4, 2010Applicant: CITIZEN HOLDINGS CO., LTD.Inventors: Teruyuki Omata, Koichi Takano, Masaaki Watanabe, Nobuo Ito, Katsuyuki Yamaguchi, Shinichi Sakamaki
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Publication number: 20030067509Abstract: A ferroelectric element comprising a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including a sol-gel process in the presence of a thickener and/or an association preventive from aqueous solutions of respective salts of the metals. The ferroelectric element is advantageous in that the handling of starting compounds and the production of the ferroelectric element are easy, the storage stability of the starting compound solution is good, the cost is low, the ferroelectric element can be formed as a thin layer, particles on the surface of the thin layer are fine and dense, and, hence, the surface smoothness is good. The ferroelectric element is excellent also in piezoelectric properties and therefore can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: ApplicationFiled: November 3, 1999Publication date: April 10, 2003Inventors: SHINICHI SAKAMAKI, YUKIMI TAKAHASHI, YORINOBU YAMADA, MOTOYUKI TOKI, MAMORU AIZAWA
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Patent number: 6350486Abstract: A ferroelectric element comprising a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including a sol-gel process in the presence of a thickener and/or an association preventive from aqueous solutions of respective salts of the metals. The ferroelectric element is advantageous in that the handling of starting compounds and the production of the ferroelectric element are easy, the storage stability of the starting compound solution is good, the cost is low, the ferroelectric element can be formed as a thin layer, particles on the surface of the thin layer are fine and dense, and, hence, the surface smoothness is good. The ferroelectric element is excellent also in piezoelectric properties and therefore can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: November 3, 1999Date of Patent: February 26, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa
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Patent number: 6343855Abstract: A ferroelectric element, having a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including the steps of: providing alkoxides of the respective metals as starting compounds; hydrolyzing the metal alkoxides in the presence of a catalytic amount of a protonic acid to increase the molecular weight; and adding a film-forming polymer material to the sol-like solution prepared in the step of increasing the molecular weight to prepare a sol-like ferroelectric precursor solution. The ferroelectric element can be formed in a thick film form without creating any cracks. It can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: February 23, 1998Date of Patent: February 5, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa
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Patent number: 6336716Abstract: A ferroelectric element, including a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including the steps of: providing alkoxides of the respective metals as starting compounds; hydrolyzing the metal alkoxides in the presence of a catalytic amount of a protonic acid to increase the molecular weight; and adding a film-forming polymer material to the sol-like solution prepared in the step of increasing the molecular weight to prepare a sol-like ferroelectric precursor solution. The ferroelectric element can be formed in a thick film form without creating any cracks. It can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: February 8, 2000Date of Patent: January 8, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa
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Publication number: 20010041216Abstract: A ferroelectric element comprising a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including a sol-gel process in the presence of a thickener and/or an association preventive from aqueous solutions of respective salts of the metals. The ferroelectric element is advantageous in that the handling of starting compounds and the production of the ferroelectric element are easy, the storage stability of the starting compound solution is good, the cost is low, the ferroelectric element can be formed as a thin layer, particles on the surface of the thin layer are fine and dense, and, hence, the surface smoothness is good. The ferroelectric element is excellent also in piezoelectric properties and therefore can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: ApplicationFiled: November 3, 1999Publication date: November 15, 2001Inventors: SHINICHI SAKAMAKI, YUKIMI TAKAHASHI, YORINOBU YAMADA, MOTOYUKI TOKI, MAMORU AIZAWA
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Patent number: 6316866Abstract: A ferroelectric element comprising a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including a sol-gel process in the presence of a thickener and/or an association preventive from aqueous solutions of respective salts of the metals. The ferroelectric element is advantageous in that the handling of starting compounds and the production of the ferroelectric element are easy, the storage stability of the starting compound solution is good, the cost is low, the ferroelectric element can be formed as a thin layer, particles on the surface of the thin layer are fine and dense, and, hence, the surface smoothness is good. The ferroelectric element is excellent also in piezoelectric properties and therefore can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: November 3, 1999Date of Patent: November 13, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa
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Patent number: 6255762Abstract: A ferroelectric element comprising a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including a sol-gel process in the presence of a thickener and/or an association preventive from aqueous solutions of respective salts of the metals. The ferroelectric element is advantageous in that the handling of starting compounds and the production of the ferroelectric element are easy, the storage stability of the starting compound solution is good, the cost is low, the ferroelectric element can be formed as a thin layer, particles on the surface of the thin layer are fine and dense, and, hence, the surface smoothness is good. The ferroelectric element is excellent also in piezoelectric properties and therefore can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: July 29, 1998Date of Patent: July 3, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa
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Patent number: 6247799Abstract: A ferroelectric element, having a ferroelectric material containing at least two metals, the ferroelectric element having been produced by a process including the steps of: providing alkoxides of the respective metals as starting compounds; hydrolyzing the metal alkoxides in the presence of a catalytic amount of a protonic acid to increase the molecular weight; and adding a film-forming polymer material to the sol-like solution prepared in the step of increasing the molecular weight to prepare a sol-like ferroelectric precursor solution. The ferroelectric element can be formed in a thick film form without creating any cracks. It can be advantageously used as a piezoelectric element in a piezoelectric ink jet head.Type: GrantFiled: February 8, 2000Date of Patent: June 19, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Sakamaki, Yukimi Takahashi, Yorinobu Yamada, Motoyuki Toki, Mamoru Aizawa