Patents by Inventor Yoshiomi Fujiwara
Yoshiomi Fujiwara 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: 9688223Abstract: A liquid lead storage battery includes a negative electrode plate, a positive electrode plate and an electrolyte solution. The both plates are arranged so as to face each other in a thickness direction and immersed in the electrolyte solution. The negative electrode plate includes an active material containing carbon. An elastic sheet formed of a porous material is arranged between the negative electrode plate and the positive electrode plate so as to press the negative electrode plate from both sides in the thickness direction.Type: GrantFiled: February 20, 2012Date of Patent: June 27, 2017Assignee: GS Yuasa International Ltd.Inventor: Yoshiomi Fujiwara
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Publication number: 20130320758Abstract: A liquid lead storage battery includes a negative electrode plate, a positive electrode plate and an electrolyte solution. The both plates are arranged so as to face each other in a thickness direction and immersed in the electrolyte solution. The negative electrode plate includes an active material containing carbon. An elastic sheet formed of a porous material is arranged between the negative electrode plate and the positive electrode plate so as to press the negative electrode plate from both sides in the thickness direction.Type: ApplicationFiled: February 20, 2012Publication date: December 5, 2013Applicant: GS YUASA INTERNATIONAL LTD.Inventor: Yoshiomi Fujiwara
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Publication number: 20120237829Abstract: A lead-acid battery includes a negative electrode plate containing carbon black, fibrous carbon and graphite in a negative active material thereof. The average primary particle size of the carbon black is 10 nm or more and 120 nm or less, and the content thereof is 0.05% by mass or more and 2.2% by mass or less based on the mass of negative active material. The average length of the fibrous carbon is 1 ?m or more, and the content thereof is 0.02% by mass or more and 1.2% by mass or less based on the mass of negative active material. The average particle size of the graphite is 20 ?m or more, and the content thereof is 0.02% by mass or more and 2.0% by mass or less based on the mass of negative active material.Type: ApplicationFiled: January 20, 2011Publication date: September 20, 2012Applicant: GS YUASA INTERNATIONAL LTD.Inventor: Yoshiomi Fujiwara
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Patent number: 8256075Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: GrantFiled: September 29, 2010Date of Patent: September 4, 2012Assignee: GS Yuasa International Ltd.Inventors: Yoshiomi Fujiwara, Ken Sawai
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Patent number: 8256074Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: GrantFiled: September 29, 2010Date of Patent: September 4, 2012Assignee: GS Yuasa International Ltd.Inventors: Yoshiomi Fujiwara, Ken Sawai
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Patent number: 8142935Abstract: A method where two disk cutter rolls are used to form slits in a staggered pattern in a metal sheet; disk cutters are part of the disk cutter rolls; ridges are arranged in a peripheral edge of the disk cutters; and valleys are arranged between the ridges, where an axis-to-axis distance L (mm) of the rolls satisfies a relationship of 2r?0.3?L<2r when a radius of a reference circumferential face made with the valleys is r (mm). The method can include a carrying procedure for passing the sheet between the rolls, then carrying the sheet along a peripheral face of one of the rolls, and then pulling out the sheet from the peripheral face.Type: GrantFiled: August 27, 2008Date of Patent: March 27, 2012Assignee: GS Yuasa International Ltd.Inventors: Yoshiomi Fujiwara, Hiroyuki Tanaka, Tadashi Nishida
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Patent number: 8039153Abstract: A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires 1b, the sectional areas of nodes 1e, and the shapes of meshes 1c, whereby the productivity of the expand grid can be enhanced and the life performance can be improved. As means for attaining the object, a storage battery in which an expand grid is used as a battery plate, the expand grid being a grid member which is formed by expanding a side portion of a collector frame portion 1a of a metal sheet 1 to connect a large number of grid wires 1b to one another in a net-like shape, is configured so that widths of grid wires 1b of a row which is directly connected to the collector frame portion 1a of the expand grid, and a lateral end row are larger than widths of grid wires 1b of at least one of intermediate rows.Type: GrantFiled: November 23, 2010Date of Patent: October 18, 2011Assignee: GS Yhasa International, Ltd.Inventors: Yoshiomi Fujiwara, Hiroyuki Tanaka
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Patent number: 7976588Abstract: A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires 1b, the sectional areas of nodes 1e, and the shapes of meshes 1c, whereby the productivity of the expand grid can be enhanced and the life performance can be improved. As means for attaining the object, a storage battery in which an expand grid is used as a battery plate, the expand grid being a grid member which is formed by expanding a side portion of a collector frame portion 1a of a metal sheet 1 to connect a large number of grid wires 1b to one another in a net-like shape, is configured so that widths of grid wires 1b of a row which is directly connected to the collector frame portion 1a of the expand grid, and a lateral end row are larger than widths of grid wires 1b of at least one of intermediate rows.Type: GrantFiled: June 1, 2006Date of Patent: July 12, 2011Assignee: GS Yussa International Ltd.Inventors: Yoshiomi Fujiwara, Hiroyuki Tanaka
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Patent number: 7950119Abstract: The method of producing a grid for a battery electrode plate is characteristic in that in producing a grid formed from a sheet by means of a rotary expander equipped with the disk cutter cluster with disk edge disk cutters, there is a notch that penetrates the outer periphery of the said edge disk cutter in the thickness direction of the said edge disk cutter.Type: GrantFiled: August 8, 2003Date of Patent: May 31, 2011Assignee: GS Yuasa International Ltd.Inventors: Yoshiomi Fujiwara, Tadashi Nishida
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Publication number: 20110070502Abstract: A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires 1b, the sectional areas of nodes 1e, and the shapes of meshes 1c, whereby the productivity of the expand grid can be enhanced and the life performance can be improved. As means for attaining the object, a storage battery in which an expand grid is used as a battery plate, the expand grid being a grid member which is formed by expanding a side portion of a collector frame portion 1a of a metal sheet 1 to connect a large number of grid wires 1b to one another in a net-like shape, is configured so that widths of grid wires 1b of a row which is directly connected to the collector frame portion 1a of the expand grid, and a lateral end row are larger than widths of grid wires 1b of at least one of intermediate rows.Type: ApplicationFiled: November 23, 2010Publication date: March 24, 2011Applicant: GS Yuasa CorporationInventors: Yoshiomi FUJIWARA, Hiroyuki TANAKA
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Publication number: 20110017035Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: ApplicationFiled: September 29, 2010Publication date: January 27, 2011Applicant: GS Yuasa CorporationInventors: Yoshiomi Fujiwara, Ken Sawai
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Publication number: 20110017034Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: ApplicationFiled: September 29, 2010Publication date: January 27, 2011Applicant: GS Yuasa CorporationInventors: Yoshiomi FUJIWARA, Ken Sawai
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Patent number: 7814628Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: GrantFiled: January 25, 2008Date of Patent: October 19, 2010Assignee: GS Yuasa CorporationInventors: Yoshiomi Fujiwara, Ken Sawai
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Publication number: 20090000089Abstract: A method where two disk cutter rolls are used to form slits in a staggered pattern in a metal sheet; disk cutters are part of the disk cutter rolls; ridges are arranged in a peripheral edge of the disk cutters; and valleys are arranged between the ridges, where an axis-to-axis distance L (mm) of the rolls satisfies a relationship of 2r?0.3?L<2r when a radius of a reference circumferential face made with the valleys is r (mm). The method can include a carrying procedure for passing the sheet between the rolls, then carrying the sheet along a peripheral face of one of the rolls, and then pulling out the sheet from the peripheral face.Type: ApplicationFiled: August 27, 2008Publication date: January 1, 2009Applicant: GS Yuasa CorporationInventors: Yoshiomi Fujiwara, Hiroyuki Tanaka, Tadashi Nishida
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Publication number: 20080163477Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: ApplicationFiled: January 25, 2008Publication date: July 10, 2008Applicant: GS Yuasa CorporationInventors: Yoshiomi Fujiwara, Ken Sawai
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Publication number: 20060213055Abstract: A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires 1b, the sectional areas of nodes 1e, and the shapes of meshes 1c, whereby the productivity of the expand grid can be enhanced and the life performance can be improved. As means for attaining the object, a storage battery in which an expand grid is used as a battery plate, the expand grid being a grid member which is formed by expanding a side portion of a collector frame portion 1a of a metal sheet 1 to connect a large number of grid wires 1b to one another in a net-like shape, is configured so that widths of grid wires 1b of a row which is directly connected to the collector frame portion 1a of the expand grid, and a lateral end row are larger than widths of grid wires 1b of at least one of intermediate rows.Type: ApplicationFiled: June 1, 2006Publication date: September 28, 2006Applicant: GS Yuasa CorporationInventors: Yoshiomi Fujiwara, Hiroyuki Tanaka
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Publication number: 20050241126Abstract: The method of producing a grid for a battery electrode plate is characteristic in that in producing a grid formed from a sheet by means of a rotary expander equipped with the disk cutter cluster with disk edge disk cutters, there is a notch that penetrates the outer periphery of the said edge disk cutter in the thickness direction of the said edge disk cutter.Type: ApplicationFiled: August 8, 2003Publication date: November 3, 2005Inventors: Yoshiomi Fujiwara, Tadashi Nishida
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Publication number: 20030121131Abstract: It is an object of the invention to provide an apparatus for producing a grid for a battery plate which can improve the life performance of a lead storage battery, and in which a lead sheet 4 is prevented from being undulated or causing vibrations in a carrying-out portion of disk cutter rolls 2 and 3, and also a method of producing such a grid.Type: ApplicationFiled: November 27, 2002Publication date: July 3, 2003Applicant: Japan Storage Battery Co., Ltd.Inventors: Yoshiomi Fujiwara, Hiroyuki Tanaka, Tadashi Nishida
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Publication number: 20030096170Abstract: A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires 1b, the sectional areas of nodes 1e, and the shapes of meshes 1c, whereby the productivity of the expand grid can be enhanced and the life performance can be improved.Type: ApplicationFiled: November 21, 2002Publication date: May 22, 2003Applicant: Japan Storage Battery Co., Ltd.Inventors: Yoshiomi Fujiwara, Hiroyuki Tanaka
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Publication number: 20030082455Abstract: The invention provides a grid for a battery plate in which, when a metal sheet is formed into a grid-like shape, rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.Type: ApplicationFiled: June 20, 2002Publication date: May 1, 2003Applicant: Japan Storage Battery Co., Ltd.Inventors: Yoshiomi Fujiwara, Ken Sawai