Patents by Inventor Kazushige Yoda
Kazushige Yoda 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: 9950945Abstract: To provide a tempered glass sheet having a thickness of from 1.8 to less than 2.5 mm, which is capable of satisfying the fragmentation quality and impact strength quality required for windowpanes for automobiles. A tempered glass sheet having a first surface, a second surface opposed to the first surface and a side surface connecting the first and second surfaces, and having a thickness of from 1.8 to less than 2.5 mm, wherein at the first surface, the average value of the surface compressive stress is within a range of from 100 to 160 MPa, and the average value of the surface strength is within a range of from 220 to 400 MPa.Type: GrantFiled: June 22, 2016Date of Patent: April 24, 2018Assignee: Asahi Glass Company, LimitedInventors: Yasumasa Kato, Kazushige Yoda, Jiro Nishihama
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Patent number: 9944550Abstract: There is provided a tempered glass plate, wherein a thickness of the tempered glass plate is less than or equal to 2.7 mm, wherein on a surface of the tempered glass plate, a plurality of stress marks are formed, wherein a distance between closest stress marks of the plurality of stress marks is less than or equal to 20 mm, wherein the surface of the tempered glass plate includes a first virtual circle that is formed by connecting points that are separated from a center of one of the plurality of stress marks by 2.5 mm, wherein the tempered glass plate includes a non elastic-wave region that is not affected by an elastic-wave generated during fracturing, and wherein, in the non elastic-wave region, an average number of cracks that exist in the first virtual circle is greater than or equal to 3.4.Type: GrantFiled: July 19, 2016Date of Patent: April 17, 2018Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Kazushige Yoda, Masao Fukami, Shinya Ohta, Yasumasa Kato, Shigeru Ezaki
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Publication number: 20170274629Abstract: A laminated glass includes a glass plate including a first plane compressive region having a prescribed width inside an outer peripheral edge of the glass plate in a plan view, a first plane tensile region adjacent to an inner peripheral side of the first plane compressive region and having a prescribed width, a neutral region occupying an inner peripheral side of the first plane tensile region, and a second plane compressive region located on an inner peripheral side of the first plane compressive region in a plan view.Type: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Toshimi YAJIMA, Hiroshi HORI, Kazushige YODA, Atsushi NAKANO
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Publication number: 20170022089Abstract: There is provided a tempered glass plate, wherein a thickness of the tempered glass plate is less than or equal to 2.7 mm, wherein on a surface of the tempered glass plate, a plurality of stress marks are formed, wherein a distance between closest stress marks of the plurality of stress marks is less than or equal to 20 mm, wherein the surface of the tempered glass plate includes a first virtual circle that is formed by connecting points that are separated from a center of one of the plurality of stress marks by 2.5 mm, wherein the tempered glass plate includes a non elastic-wave region that is not affected by an elastic-wave generated during fracturing, and wherein, in the non elastic-wave region, an average number of cracks that exist in the first virtual circle is greater than or equal to 3.4.Type: ApplicationFiled: July 19, 2016Publication date: January 26, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazushige YODA, Masao FUKAMI, Shinya OHTA, Yasumasa KATO, Shigeru EZAKI
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Publication number: 20170001899Abstract: To provide a tempered glass sheet having a thickness of from 1.8 to less than 2.5 mm, which is capable of satisfying the fragmentation quality and impact strength quality required for windowpanes for automobiles. A tempered glass sheet having a first surface, a second surface opposed to the first surface and a side surface connecting the first and second surfaces, and having a thickness of from 1.8 to less than 2.5 mm, wherein at the first surface, the average value of the surface compressive stress is within a range of from 100 to 160 MPa, and the average value of the surface strength is within a range of from 220 to 400 MPa.Type: ApplicationFiled: June 22, 2016Publication date: January 5, 2017Applicant: Asahi Glass Company, LimitedInventors: Yasumasa KATO, Kazushige Yoda, Jiro Nishihama
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Patent number: 8769990Abstract: The method for tempering a glass sheet of the present invention comprises a heating step of heating the glass sheet to a temperature close to the softening point of the glass sheet, a quenching step of blowing a cooling medium to both surfaces in the thickness direction of the heated glass to cool it, and a pre-quenching step between the heating step and the quenching step and further has an internal heating substep of selectively heating the vicinity of the center portion in the thickness direction of the glass sheet at least in the quenching step, to create such a state that when the temperature at the center portion in the thickness direction of the glass sheet is close to the tempering point, the temperature at the surfaces in the thickness direction of the glass sheet is not higher than the annealing point.Type: GrantFiled: September 27, 2012Date of Patent: July 8, 2014Assignee: Asahi Glass Company, LimitedInventors: Isao Saito, Junji Hori, Kiyota Miyazaki, Tomohiro Suwa, Yasumasa Kato, Satoshi Yoshida, Kazushige Yoda
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Patent number: 8234884Abstract: The present invention provides an air-cooling/tempering device and an air-cooling/tempering method for a glass sheet, which are capable of uniformly air-cooling and tempering a glass sheet as a whole without being affected by the pitch between adjacent rollers and a roller diameter. The roller body of each roller forming the air-cooling/tempering device includes a rotary shaft formed of a guide shaft permitting a bendable action; and a plurality of ring rollers carried on the guide shaft and engaged and coupled with adjacent ring rollers; and disc rollers fixedly carried at intervals on ring rollers so as not to overlap the disc rollers on an adjacent roller with respect to a conveying direction of the glass sheet. Further, outlet modules are disposed on ring rollers between adjacent disc rollers through bearings so as to be rotatable with respect to the rotary shaft.Type: GrantFiled: September 30, 2010Date of Patent: August 7, 2012Assignee: Asahi Glass Company, LimitedInventors: Kazushige Yoda, Nozomi Otsubo, Tomohiro Yonemichi, Yasumasa Kato
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Publication number: 20110016921Abstract: The present invention provides an air-cooling/tempering device and an air-cooling/tempering method for a glass sheet, which are capable of uniformly air-cooling and tempering a glass sheet as a whole without being affected by the pitch between adjacent rollers and a roller diameter. The roller body of each roller forming the air-cooling/tempering device includes a rotary shaft formed of a guide shaft permitting a bendable action; and a plurality of ring rollers carried on the guide shaft and engaged and coupled with adjacent ring rollers; and disc rollers fixedly carried at intervals on ring rollers so as not to overlap the disc rollers on an adjacent roller with respect to a conveying direction of the glass sheet. Further, outlet modules are disposed on ring rollers between adjacent disc rollers through bearings so as to be rotatable with respect to the rotary shaft.Type: ApplicationFiled: September 30, 2010Publication date: January 27, 2011Applicant: Asahi Glass Company, LimitedInventors: Kazushige YODA, Nozomi OTSUBO, Tomohiro YONEMICHI, Yasumasa KATO
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Patent number: 7341968Abstract: A glass plate; a glass plate having a thickness of 2 to 3 mm; a glass plate obtained by a float process; and, a window glass for automobiles.Type: GrantFiled: January 19, 2007Date of Patent: March 11, 2008Assignee: Asahi Glass Company, LimitedInventors: Kazushige Yoda, Yasumasa Kato, Shuichi Akada
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Patent number: 7306848Abstract: A tempered glass sheet having in its front view a peripheral region including the peripheries, and a central region (9) occupying inside the peripheral region, wherein the average surface compressive stress in the central region (9) is larger than the average surface compressive stress in the peripheral region, is presented, whereby a tempered glass sheet having a thickness thinner than conventional ones can be provided.Type: GrantFiled: July 9, 2003Date of Patent: December 11, 2007Assignee: Asahi Glass Company, LimitedInventors: Hiromasa Tominaga, Kazushige Yoda
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Publication number: 20070117707Abstract: A glass plate; a glass plate having a thickness of 2 to 3 mm; a glass plate obtained by a float process; and, a window glass for automobiles.Type: ApplicationFiled: January 19, 2007Publication date: May 24, 2007Applicant: ASAHI GLASS COMPANY LIMITEDInventors: KAZUSHIGE YODA, Yasumasa Kato, Shuichi Akada
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Publication number: 20050138967Abstract: There are a preliminarily bending step for putting heated and softened glass sheet on a preliminarily bending supporting-frame, the glass sheet having an edge portion supported by the preliminarily bending supporting-frame, and for bending the glass sheet into a desired preliminarily bent shape while putting the glass sheet on the preliminarily bending supporting-frame; and a finally bending step for transferring the preliminarily bent glass sheet on a finally bending supporting-frame, the glass sheet having an edge portion supported by the finally bending supporting-frame, and for bending the glass sheet into a final bent shape by pressing the glass sheet against a bending surface of a finally bending mold while putting the glass sheet on the finally bending supporting-frame.Type: ApplicationFiled: December 22, 2004Publication date: June 30, 2005Applicant: Asahi Glass Company, LimitedInventors: Junji Hori, Masao Fukami, Kazushige Yoda, Yutaka Kitajima
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Patent number: 6881485Abstract: There is provided a tempered glass sheet, which is air-cooled and tempered by a cooling medium blown from a plurality of nozzles provided in rows so as to have a stress pattern formed therein, comprising a stress pattern formed in the glass sheet such that a plurality of cells range to form the stress pattern, the respective cells have centers just under the respective nozzles; each of the cells having a central region with a membrane stress in a compression state; each of the cells having a peripheral region with a membrane stress in a compression state; and each of the cells having a region between the central region and the peripheral region with a membrane stress in a tension state. There is also provided a method for producing the tempered glass sheet.Type: GrantFiled: April 26, 2002Date of Patent: April 19, 2005Assignee: Asahi Glass Company, LimitedInventors: Yasumasa Kato, Kazushige Yoda
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Publication number: 20040007022Abstract: A tempered glass sheet having in its front view a peripheral region including the peripheries, and a central region (9) occupying inside the peripheral region, wherein the average surface compressive stress in the central region (9) is larger than the average surface compressive stress in the peripheral region, is presented, whereby a tempered glass sheet having a thickness thinner than conventional ones can be provided.Type: ApplicationFiled: July 9, 2003Publication date: January 15, 2004Applicant: Asahi Glass Company, LimitedInventors: Hiromasa Tominaga, Kazushige Yoda
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Publication number: 20030061835Abstract: A method for tempering a glass plate having a thickness of from 2 to 3 mm, and having an average linear thermal expansion coefficient of at least 88×10−7/° C. at a temperature of from 50 to 300° C. and a softening point of from 715 to 740° C.Type: ApplicationFiled: March 25, 2002Publication date: April 3, 2003Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Kazushige Yoda, Yasumasa Kato, Shuichi Akada
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Publication number: 20020194872Abstract: There is provided a tempered glass sheet, which is air-cooled and tempered by a cooling medium blown from a plurality of nozzles provided in rows so as to have a stress pattern formed therein, comprising a stress pattern formed in the glass sheet such that a plurality of cells range to form the stress pattern, the respective cells have centers just under the respective nozzles; each of the cells having a central region with a membrane stress in a compression state; each of the cells having a peripheral region with a membrane stress in a compression state; and each of the cells having a region between the central region and the peripheral region with a membrane stress in a tension state. There is also provided a method for producing the tempered glass sheet.Type: ApplicationFiled: April 26, 2002Publication date: December 26, 2002Applicant: Asahi Glass Company LimitedInventors: Yasumasa Kato, Kazushige Yoda