Patents by Inventor Yukio Okochi
Yukio Okochi 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: 6303222Abstract: Embossed metallic flakelets have high damage resistance and can be produced readily. A method for production is also provided. The embossed metallic flakelets are produced by dip-coating an organic-inorganic composite layer 12 on upper and lower sides of a carrier layer made of a PVA film or the like by a sol-gel process, and pressing an original embossed pattern 14 having an embossed pattern against the organic-inorganic composite layer 12 under pressure to transfer the embossed pattern onto the organic-inorganic composite layer 12. A sample having the transferred embossed pattern is sintered, to form a metallic film 10 on the organic-inorganic composite layer 12 by deposition or the like.Type: GrantFiled: March 31, 2000Date of Patent: October 16, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Kimoto, Masatugu Nakanishi, Akira Kato, Yoshihiro Yamamura, Yukio Okochi, Takatoshi Katsumata
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Patent number: 6299706Abstract: A high-strength aluminum alloy having good porthole extrudability is provided. It has a Vickers hardness Hv of not less than 40 as measured in a homogenized state created by heat treatment before extrusion and a Vickers hardness Hv of not less than 20 imparted by plastic working after the heat treatment.Type: GrantFiled: November 24, 1997Date of Patent: October 9, 2001Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Light Metal, Co., Ltd.Inventors: Yoshiharu Miyake, Yoshihisa Serizawa, Yukio Okochi, Tetsuya Suganuma, Hajime Kamio, Takayuki Tsuchida, Hiroshi Nagashima
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Publication number: 20010020502Abstract: The present invention provides a superplastic aluminum alloy in which fine particles not substantially dispersion hardening are dispersed in a sufficient amount to effect grain boundary pinning to suppress crystal grain growth during hot working thereby ensuring manifestation of superplasticity over wide ranges of working temperature and strain rate.Type: ApplicationFiled: May 3, 2001Publication date: September 13, 2001Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yoshiharu Miyake, Yoshihisa Serizawa, Yukio Okochi
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Publication number: 20010014404Abstract: The present invention provides a superplastic aluminum alloy in which fine particles not substantially dispersion hardening are dispersed in a sufficient amount to effect grain boundary pinning to suppress crystal grain growth during hot working thereby ensuring manifestation of superplasticity over wide ranges of working temperature and strain rate.Type: ApplicationFiled: July 17, 1997Publication date: August 16, 2001Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: YOSHIHARU MIYAKE, YOSHIHISA SERZAWA, YUKIO OKOCHI
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Patent number: 6168100Abstract: An improved method of preparing embossed metallic flakelets for a hologram pigment improves productivity through a simpler process. A metallic foil 12 is first pressed between a cooperative pair of dies 10 having mutually complementary embossed patterns to thereby transfer to the surfaces of the metallic foil 12 the embossed pattern of the dies 10. Finally, the pulverized metallic flakelets are mixed with predetermined other ingredients to make a hologram pigment.Type: GrantFiled: March 25, 1999Date of Patent: January 2, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventors: Akira Kato, Masatsugu Nakanishi, Hidekazu Yamanakajima, Yoshihiro Yamamura, Yukio Okochi, Takatoshi Katsumata
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Patent number: 6112388Abstract: Embossed metallic flakelets have high damage resistance and can be produced readily. A method for production is also provided. The embossed metallic flakelets are produced by dip-coating an organic-inorganic composite layer 12 on upper and lower sides of a carrier layer made of a PVA film or the like by a sol-gel process, and pressing an original embossed pattern 14 having an embossed pattern against the organic-inorganic composite layer 12 under pressure to transfer the embossed pattern onto the organic-inorganic composite layer 12. A sample having the transferred embossed pattern is sintered, to form a metallic film 10 on the organic-inorganic composite layer 12 by deposition or the like.Type: GrantFiled: June 25, 1998Date of Patent: September 5, 2000Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Kimoto, Masatugu Nakanishi, Akira Kato, Yoshihiro Yamamura, Yukio Okochi, Takatoshi Katsumata
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Patent number: 6036930Abstract: The present invention provides a process for producing aluminum oxide fibers and, particularly, a process for producing aluminum fibers that have a high aspect ratio and can be accurately aligned, said process for producing aluminum oxide fibers comprising the steps of: uniformly mixing an aluminum or aluminum alloy powder with a boron oxide powder or a powder which, upon heating, can be converted to a boron oxide powder; and heating the mixed powder, or comprising the steps of: mixing not more than 50% by weight, in terms of titanium, of a titanium or titanium alloy powder to the starting mixture; and heating the mixed powder.Type: GrantFiled: September 17, 1998Date of Patent: March 14, 2000Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshitomo Shintani, Yukio Okochi
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Patent number: 5578144Abstract: To provide a high-strength, high-ductility cast aluminum alloy, which enables a near-net shape product to be produced by improving the casting structure of an aluminum alloy, particularly by using specific constituents and controlling the cooling rate, and a process for producing the same. The high-strength, high-ductility cast aluminum alloy of the present invention is characterized in that it has a structure comprising fine grains of .alpha.-Al, having an average grain diameter of not more than 10 .mu.m, surrounded by a network of a compound of Al-lanthanide-base metal, the .alpha.-Al grains forming a domain, that the domain comprises an aggregate of .alpha.-Al grains which have been refined, cleaved, and ordered in a single direction and that it has a composition represented by the general formula Al.sub.a Ln.sub.b M.sub.c wherein a, b, and c are, in terms of by weight, respectively 75%.ltoreq.a.ltoreq.95%, 0.5%.ltoreq.b<15%, and 0.5%.ltoreq.c<15%.Type: GrantFiled: June 14, 1995Date of Patent: November 26, 1996Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuaki Satou, Yukio Okochi
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Patent number: 5431751Abstract: A high strength aluminum alloy is expressed by a general formula, Al.sub.a X.sub.b Mm.sub.c, in which "X" stands for at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zr, "Mm" stands for a misch metal, a content "a" of aluminum falls in a range of from 95.2 to 97.5 atomic %, and a content "b" of "X" and a content "c" of the "Mm" fall in a hatched area enclosed by points "A," "B," "C" and "D" of accompanying FIG. 1 on atomic % basis, and whose metallic phase includes microcrystalline phases or mixed phases containing amorphous phases in a volume content of less than 50% and the balance of microcrystalline phases. As a result, the amorphous phases or the microcrystalline phases are dispersed uniformly in its base microcrystalline phases appropriately, and at the same time the thus generating base microcrystalline phases are reinforced by forming solid solutions including the "Mm" and the transition metal element "X" as well.Type: GrantFiled: February 5, 1993Date of Patent: July 11, 1995Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yukio Okochi, Kazuaki Sato, Tetsuya Suganuma, Akira Kato, Tsuyoshi Masumoto, Akihisa Inoue