Patents by Inventor Masahiko Tada
Masahiko Tada 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: 10766222Abstract: In a glass substrate for extracting therefrom a plurality of cover glasses to protect a protection object, plural concave portions are provided in a front surface or back surface of the glass substrate. The glass substrate includes plural thin portions formed by providing the plural concave portions and a thick portion connecting to the thin portion, and a haze value of the thin portion is 8% or less.Type: GrantFiled: April 26, 2019Date of Patent: September 8, 2020Assignee: AGC Inc.Inventors: Masao Ozeki, Masahiko Tada, Makoto Sano, Osami Taito
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Patent number: 10442151Abstract: In a glass substrate for extracting therefrom a plurality of cover glasses to protect a protection object, plural concave portions are provided in a front surface or back surface of the glass substrate. The glass substrate includes plural thin portions formed by providing the plural concave portions and a thick portion connecting to the thin portion, and a haze value of the thin portion is 8% or less.Type: GrantFiled: June 3, 2016Date of Patent: October 15, 2019Assignee: AGC Inc.Inventors: Masao Ozeki, Masahiko Tada, Makoto Sano, Osami Taito
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Publication number: 20190248098Abstract: In a glass substrate for extracting therefrom a plurality of cover glasses to protect a protection object, plural concave portions are provided in a front surface or back surface of the glass substrate. The glass substrate includes plural thin portions formed by providing the plural concave portions and a thick portion connecting to the thin portion, and a haze value of the thin portion is 8% or less.Type: ApplicationFiled: April 26, 2019Publication date: August 15, 2019Applicant: AGC Inc.Inventors: Masao OZEKI, Masahiko Tada, Makoto Sano, Osami Taito
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Publication number: 20160357294Abstract: In a glass substrate for extracting therefrom a plurality of cover glasses to protect a protection object, plural concave portions are provided in a front surface or back surface of the glass substrate. The glass substrate includes plural thin portions formed by providing the plural concave portions and a thick portion connecting to the thin portion, and a haze value of the thin portion is 8% or less.Type: ApplicationFiled: June 3, 2016Publication date: December 8, 2016Applicant: Asahi Glass Company, LimitedInventors: Masao OZEKI, Masahiko TADA, Makoto SANO, Osami TAITO
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Patent number: 9260774Abstract: An object of the present invention is to make it possible, without necessitating an alkali pretreatment, to form a zinc oxide layer having excellent sliding properties on a hot dip galvanized steel sheet not subjected to alloying after galvanizing and thus having a relatively low degree of surface activity. Another object of the present invention is to make it possible to manufacture a hot dip galvanized steel sheet having higher area ratio of Zn oxide layer formed on a coating surface and larger thickness of the Zn oxide layer.Type: GrantFiled: March 14, 2011Date of Patent: February 16, 2016Assignee: JFE Steel CorporationInventors: Katsuya Hoshino, Takahiro Kubota, Masahiko Tada, Masayasu Nagoshi, Wataru Tanimoto, Hideo Kijima, Kazuhiko Higai
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Patent number: 8623514Abstract: A zinc-based metal plated steel sheet is excellent in tribological properties during press forming. An oxide layer containing crystalline 3Zn(OH)2.ZnSO4.xH2O is formed on a plated surface. The oxide layer has a thickness of 10 nm or more. The crystalline oxide layer is composed of 3Zn(OH)2.ZnSO4.3-5H2O.Type: GrantFiled: December 8, 2011Date of Patent: January 7, 2014Assignee: JFE Steel CorporationInventors: Yoichi Makimizu, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino, Hiroshi Kajiyama, Masayasu Nagoshi, Wataru Tanimoto, Kyoko Fujimoto
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Publication number: 20130086960Abstract: An object of the present invention is to make it possible, without necessitating an alkali pretreatment, to form a zinc oxide layer having excellent sliding properties on a hot dip galvanized steel sheet not subjected to alloying after galvanizing and thus having a relatively low degree of surface activity. Another object of the present invention is to make it possible to manufacture a hot dip galvanized steel sheet having higher area ratio of Zn oxide layer formed on a coating surface and larger thickness of the Zn oxide layer.Type: ApplicationFiled: March 14, 2011Publication date: April 11, 2013Applicant: JFE Steel CorporationInventors: Katsuya Hoshino, Takahiro Kubota, Masahiko Tada, Masayasu Nagoshi, Wataru Tanimoto, Hideo Kijima, Kazuhiko Higai
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Publication number: 20120321908Abstract: A galvanized steel sheet has an organic inorganic complex coating on the surface thereof which contains an organic resin and a crystalline layered substance and has an average film thickness of 0.10 to 2.0 ?m. The organic inorganic complex coating contains the crystalline layered substance in a solid content of not less than 0.5 parts by weight with respect to 100 parts by weight of the solid content of the organic resin.Type: ApplicationFiled: November 19, 2010Publication date: December 20, 2012Applicant: JFE STEEL CORPORATIONInventors: Katsuya Hoshino, Takahiro Kubota, Tatsuya Miyoshi, Masahiko Tada
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Patent number: 8221900Abstract: A zinc-based metal plated steel sheet is excellent in tribological properties during press forming. An oxide layer containing crystalline 3Zn(OH)2·ZnSO4·xH2O is formed on a plated surface. The oxide layer has a thickness of 10 nm or more. The crystalline oxide layer is composed of 3Zn(OH)2·ZnSO4·3-5H2O.Type: GrantFiled: September 3, 2008Date of Patent: July 17, 2012Assignee: JFE Steel CorporationInventors: Yoichi Makimizu, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino, Hiroshi Kajiyama, Masayasu Nagoshi, Wataru Tanimoto, Kyoko Fujimoto
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Publication number: 20120082845Abstract: A zinc-based metal plated steel sheet is excellent in tribological properties during press forming. An oxide layer containing crystalline 3Zn(OH)2.ZnSO4. xH2O is formed on a plated surface. The oxide layer has a thickness of 10 nm or more. The crystalline oxide layer is composed of 3Zn(OH)2.ZnSO4.3-5H2O.Type: ApplicationFiled: December 8, 2011Publication date: April 5, 2012Applicant: JFE Steel CorporationInventors: Yoichi Makimizu, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino, Hiroshi Kajiyama, Masayasu Nagoshi, Wataru Tanimoto, Kyoko Fujimoto
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Publication number: 20110236677Abstract: A method for producing a galvanized steel sheet includes contacting a steel sheet with a zinc-containing aqueous solution having a zinc ion concentration of 1 to 100 g/l, contacting the steel sheet with an aqueous solution with a pH of 6 to 14, washing the steel sheet with water, and then drying the steel sheet. An example of the zinc-containing aqueous solution is a solution containing zinc sulfate. According to the method, an oxide layer which has an average thickness of 10 nm or more and which principally contains zinc is formed on the steel sheet and the galvanized steel sheet can be stably produced at high speed in a reduced space so as to have excellent press formability.Type: ApplicationFiled: April 22, 2009Publication date: September 29, 2011Applicant: JFE STEEL CORPORATIONInventors: Yoichi Makimizu, Hiroshi Kajiyama, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino
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Publication number: 20110226387Abstract: A method for manufacturing a galvanized steel sheet, includes: galvanizing a steel sheet; bringing the surface of the steel sheet into contact with an aqueous solution containing zinc ion in the range of 5 to 100 g/l as the zinc ion concentration, having a pH of 4 to 6, and having a liquid temperature of 20 to 70° C., holding the steel sheet for 1 to 60 seconds; and then washing and drying the steel sheet. The solution containing zinc is preferably one containing zinc sulfate, for example. According to the method, a galvanized steel sheet having an oxide layer having an average thickness of 10 nm or more and mainly containing zinc formed on the surface of the steel sheet and having excellent press formability can be stably manufactured in a short time.Type: ApplicationFiled: April 22, 2009Publication date: September 22, 2011Applicant: JFE STEEL CORPORATIONInventors: Yoichi Makimizu, Hiroshi Kajiyama, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Hiroyuki Masuoka, Katsuya Hoshino, Masayasu Nagoshi
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Publication number: 20110222053Abstract: The present invention relates to a front plate for a display comprising: a glass substrate having a first surface and a second surface; and a ceramic layer formed on at least a part of a marginal area of the second surface, wherein the front plate has a difference (?T) between a maximum light amount Tmax and a minimum light amount Tmin of transmitted light of 0.Type: ApplicationFiled: March 10, 2011Publication date: September 15, 2011Applicant: Asahi Glass Company, LimitedInventors: Makoto Kamikawa, Hideya Satake, Koji Sasaki, Makoto Fukawa, Masahiko Tada, Kazuo Etoh
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Publication number: 20100255341Abstract: A zinc-based metal plated steel sheet is excellent in tribological properties during press forming. An oxide layer containing crystalline 3Zn(OH)2.ZnSO4.xH2O is formed on a plated surface. The oxide layer has a thickness of 10 nm or more. The crystalline oxide layer is composed of 3Zn(OH)2.ZnSO4.3-5H2O.Type: ApplicationFiled: September 3, 2008Publication date: October 7, 2010Applicant: JFE STEEL CORPORATIONInventors: Yoichi Makimizu, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino, Hiroshi Kajiyama, Masayasu Nagoshi, Wataru Tanimoto, Kyoko Fujimoto
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Publication number: 20080070060Abstract: The hot-dip galvanized steel sheet has: a steel sheet containing 0.1 to 3.0% of Si by mass; a hot-dip galvanizing layer; and a segregated layer, being placed between the steel sheet and the hot-dip galvanizing layer, having a thickness in a range from 0.01 to 100 ?m; containing an oxide containing Si, and being composed of at least one component selected from the group consisting of S, C, Cl, Na, K, B, P, F, and N. The hot-dip galvanized steel sheet shows beautiful surface appearance without generating non-plating portion and provides excellent plating adhesion and sliding property in spite of using a base steel sheet containing a large quantity of Si. Furthermore, the alloy hot-dip galvanized steel sheet obtained by allying the hot-dip galvanized plating also has excellent anti-powdering property.Type: ApplicationFiled: October 7, 2005Publication date: March 20, 2008Applicant: JFE STEEL CORPORATIONInventors: Yoshitsugu Suzuki, Yusuke Fushiwaki, Masahiko Tada, Yoichi Tobiyama, Hisanori Ando, Takashi Kawano
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Publication number: 20060057417Abstract: The present invention provides a galvannealed steel sheet excellent in the adhesion with a base steel sheet and a manufacturing method thereof. The galvannealed steel sheet according to the invention has, in an interface between a galvannealed layer and the base steel sheet thereon the galvannealed layer is formed, an irregularity that has a depth of 10 nm or more at a pitch of 0.5 ?m or less at least one per 5 ?m of a length of the interface.Type: ApplicationFiled: February 5, 2004Publication date: March 16, 2006Applicant: JFE STEEL CORPORATIONInventors: Masahiko Tada, Yoichi Tobiyama, Kazuaki Kyono, Noriko Makiishi, Hisato Noro
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Patent number: 6461465Abstract: An apparatus for manufacturing a liquid crystal panel in which two substrates are faced to each other with spacers interposed therebetween, applied with heat pressure in an overlapped condition, and adhesive arranged between the two substrates is cured for fixing, characterized in that at least of a pair of pressurizing plates for applying pressure to the two substrates is a graphite plate and in that upper and lower pressurizing plates are made to be of different rigidity. The graphite plate of low rigidity is made to stick to the substrate, and shifts between substrate can be prevented while securing uniformity in gap between substrates.Type: GrantFiled: January 23, 2001Date of Patent: October 8, 2002Assignees: Advanced Display Inc., Mitsubishi Denki Kabushiki KaishaInventors: Masahiko Tada, Kohei Adachi, Hiroki Toyoshima, Susumu Kono, Kazuo Yoshida, Yoshihiro Kashiba, Yoshimi Kinoshita
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Patent number: 6290776Abstract: A hot dip coating apparatus enables stable and continuous production of a coated steel strip having a high degree of uniformity of the coating quality over the breadth of the steel strip and clean coated surfaces free of deposition of dross. The hot dip coating apparatus has a bottom slit through which a steel strip to be coated is introduced and pulled upward through the coating tank, and an electromagnetic sealing device which applies a magnetic field to the molten metal in the coating tank so as to hold the molten metal inside the tank. The coating tank is provided at its top with an overflow dam for allowing the molten mental to overflow out of the coating tank. The apparatus also has a molten metal supply system which produces a circulating flow of the molten metal through the coating tank. The molten metal supply system has molten metal buffers which communicate with a molten metal supply passage and from which the molten metal is discharged towards the steel strip.Type: GrantFiled: June 15, 1999Date of Patent: September 18, 2001Assignees: Kawasaki Steel Corporation, Mitsubishi Heavy Industries, Ltd.Inventors: Masahiko Tada, Chiaki Kato, Toshitane Matsukawa, Kazumasa Mihara, Kenichi Unoki
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Publication number: 20010018948Abstract: An apparatus for manufacturing a liquid crystal panel in which two substrates are faced to each other with spacers interposed therebetween, applied with heat and pressure in an overlapped condition, and adhesive arranged between the two substrates is cured for fixing, characterized in that at least one of a pair of pressurizing plates for applying pressure to the two substrates is a graphite plate and in that upper and lower pressurizing plates are made to be of different rigidity. The graphite plate of low rigidity is made to stick to the substrate, and shifts between substrates can be prevented while securing uniformity in gaps between substrates.Type: ApplicationFiled: January 23, 2001Publication date: September 6, 2001Applicant: ADVANCED DISPLAY INC.Inventors: Masahiko Tada, Kohei Adachi, Hiroki Toyoshima, Susumu Kono, Kazuo Yoshida, Yoshihiro Kashiba, Yoshimi Kinoshita
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Patent number: RE45821Abstract: A zinc-based metal plated steel sheet is excellent in tribological properties during press forming. An oxide layer containing crystalline 3Zn(OH)2·ZnSO4·xH2O is formed on a plated surface. The oxide layer has a thickness of 10 nm or more. The crystalline oxide layer is composed of 3Zn(OH)2·ZnSO4·3-5H2O.Type: GrantFiled: June 30, 2014Date of Patent: December 22, 2015Assignee: JFE Steel CorporationInventors: Yoichi Makimizu, Sakae Fujita, Naoto Yoshimi, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka, Katsuya Hoshino, Hiroshi Kajiyama, Masayasu Nagoshi, Wataru Tanimoto, Kyoko Fujimoto