Patents by Inventor Genta Terazawa
Genta Terazawa 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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Publication number: 20220123402Abstract: Provided is an alkaline secondary battery including: a stacked-cell battery in which multiple single cell elements having a configuration of an alkaline secondary battery are stacked; and a box-shaped case made of resin in which the stacked-cell battery is housed vertically. The box-shaped case has a bottom, a pair of long-side walls parallel to the stacked-cell battery, a pair of short-side walls perpendicular to the stacked-cell battery, and a lid part. The lid part has a vulnerable portion having a smaller thickness than other portions of the lid part, the thickness of the vulnerable portion is 0.1 to 1.0 mm, and a proportion of an area of the vulnerable portion with respect to a total area of the lid part in a plan view is 10 to 40%.Type: ApplicationFiled: December 28, 2021Publication date: April 21, 2022Applicant: NGK INSULATORS, LTD.Inventors: Yuichi GONDA, Keiichi MORI, Genta TERAZAWA
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Patent number: 10923756Abstract: A joining structure includes a first bonded member and a glass portion that is bonded to a surface of the first bonded member. The glass portion includes an interface region not exceeding 5 ?m of the surface of the first bonded member, and an inner region more than 5 ?m from the surface of the first bonded member. The interface region and inner region respectively include rod-shaped crystal particles that have three or more aspect ratios when viewed in cross section. An average orientation angle of the rod-shaped crystal particles included in the interface region is greater than or equal to 60 degrees and less than or equal to 120 degrees. A standard deviation of the orientation angle of the rod-shaped crystal particles included in the inner region is greater than a standard deviation of the orientation angle of the rod-shaped crystal particles included in the interface region.Type: GrantFiled: July 9, 2020Date of Patent: February 16, 2021Assignee: NGK INSULATORS, LTD.Inventors: Genta Terazawa, Masato Fukumori, Yuki Tanaka, Takashi Ryu, Makoto Ohmori
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Publication number: 20200343574Abstract: A joining structure includes a first bonded member and a glass portion that is bonded to a surface of the first bonded member. The glass portion includes an interface region not exceeding 5 ?m of the surface of the first bonded member, and an inner region more than 5 ?m from the surface of the first bonded member. The interface region and inner region respectively include rod-shaped crystal particles that have three or more aspect ratios when viewed in cross section. An average orientation angle of the rod-shaped crystal particles included in the interface region is greater than or equal to 60 degrees and less than or equal to 120 degrees. A standard deviation of the orientation angle of the rod-shaped crystal particles included in the inner region is greater than a standard deviation of the orientation angle of the rod-shaped crystal particles included in the interface region.Type: ApplicationFiled: July 9, 2020Publication date: October 29, 2020Inventors: Genta TERAZAWA, Masato FUKUMORI, Yuki TANAKA, Takashi RYU, Makoto OHMORI
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Patent number: 10181605Abstract: A plurality of insertion holes for inserting one end of each of a plurality of cells is formed on the surface of a support substrate. One end of each of the cells is loosely fitted in the corresponding insertion hole. A joining material is provided so as to fill at least a gap present between the inner wall of the insertion hole and the outer wall of the one end of the cell in each joining portion between each of the insertion holes and one end of the corresponding cell. As the joining material, crystallized glass which includes a plurality of kinds of crystal phases generated when the crystallization of amorphous glass heated up to a crystallization temperature proceeds is used, and a volume reduction ratio (crystallization shrinkage ratio) of the joining material caused by the crystallization at the crystallization temperature is 0.78% or more and 12% or less.Type: GrantFiled: May 28, 2013Date of Patent: January 15, 2019Assignee: NGK Insulators, Ltd.Inventors: Makoto Ohmori, Tomohiro Usui, Koichi Koga, Masayuki Shinkai, Genta Terazawa
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Publication number: 20140004439Abstract: A plurality of insertion holes for inserting one end of each of a plurality of cells is formed on the surface of a support substrate. One end of each of the cells is loosely fitted in the corresponding insertion hole. A joining material is provided so as to fill at least a gap present between the inner wall of the insertion hole and the outer wall of the one end of the cell in each joining portion between each of the insertion holes and one end of the corresponding cell. As the joining material, crystallized glass which includes a plurality of kinds of crystal phases generated when the crystallization of amorphous glass heated up to a crystallization temperature proceeds is used, and a volume reduction ratio (crystallization shrinkage ratio) of the joining material caused by the crystallization at the crystallization temperature is 0.78% or more and 12% or less.Type: ApplicationFiled: May 28, 2013Publication date: January 2, 2014Inventors: Makoto OHMORI, Tomohiro USUI, Koichi KOGA, Masayuki SHINKAI, Genta TERAZAWA
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Patent number: 8043764Abstract: A stack structure includes plate-like electrochemical cells of ceramic, each having a pair of main surfaces and a side surface, and plate-like retainer pieces. The cell includes a first electrode in contact with first gas, a solid electrolyte, and a second electrode in contact with second gas. The first electrode has a gas flow channel formed therein and adapted to allow flow of the first gas. The cell has gas inflow and outflow ports. The retainer piece includes a body portion having a through-hole formed therein, and a pair of protrusions protruding from the body portion. The retainer piece has a communication hole formed therein and adapted to establish communication between the through-hole and a space formed between the protrusions. The cell is held by the paired protrusions, thereby establishing communication between the gas inflow or outflow port of the cell and the communication hole of the retainer piece.Type: GrantFiled: January 26, 2010Date of Patent: October 25, 2011Assignee: NGK Insulators, Ltd.Inventors: Toshiaki Kuno, Takenori Ichigi, Keiichi Kanno, Makoto Ohmori, Masayuki Shinkai, Genta Terazawa
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Publication number: 20100190090Abstract: A stack structure includes plate-like electrochemical cells of ceramic, each having a pair of main surfaces and a side surface, and plate-like retainer pieces. The cell includes a first electrode in contact with first gas, a solid electrolyte, and a second electrode in contact with second gas. The first electrode has a gas flow channel formed therein and adapted to allow flow of the first gas. The cell has gas inflow and outflow ports. The retainer piece includes a body portion having a through-hole formed therein, and a pair of protrusions protruding from the body portion. The retainer piece has a communication hole formed therein and adapted to establish communication between the through-hole and a space formed between the protrusions. The cell is held by the paired protrusions, thereby establishing communication between the gas inflow or outflow port of the cell and the communication hole of the retainer piece.Type: ApplicationFiled: January 26, 2010Publication date: July 29, 2010Applicant: NGK Insulators, Ltd.Inventors: Toshiaki KUNO, Takenori Ichigi, Keiichi Kanno, Makoto Ohmori, Masayuki Shinkai, Genta Terazawa