Patents by Inventor Masahiko Morita
Masahiko Morita 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: 6457647Abstract: A memory card adaptor comprising an adaptor main body detachably insertable in a memory card slot of a piece of information equipment; a first connector based on standard specifications, provided on the adaptor main body and adapted to be connected to a connector provided in the memory card slot; a mounting portion provided on the adaptor main body and adapted to detachably receive a memory card which is detachably inserted into a memory card slot of another piece of equipment different from the information equipment, for effecting exchange of information signals in serial data form with the external equipment; and a second connector not based on the standard specifications, provided on the mounting portion and adapted to be connected with a connector provided on the memory card and corresponding to a connector in the memory card slot of the external equipment; wherein exchange of information signals in serial data form is enabled between the information equipment and the memory card by insertion of the adaptType: GrantFiled: January 8, 1997Date of Patent: October 1, 2002Assignee: Canon Kabushiki KaishaInventors: Toshiya Kurihashi, Masahiko Morita
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Patent number: 6331216Abstract: The steel pipe has a structure composed mainly of ferrite or ferrite plus pearlite or ferrite plus cementite. The steel pipe is characterized by grain size not greater than 3 &mgr;m, preferably not greater than 1 &mgr;m, elongation greater than 20%, tensile strength (TS:MPa) and elongation (E1:%) whose product is greater than 10000, and percent ductile fracture greater than 95%, preferably 100%, measured by Charpy impact test on an actual pipe at −100° C. The structure is characterized by C: 0.005-0.03%, Si: 0.01-3.0%, Mn: 0.01-2.0%, and Al: 0.001-0.10% on a weight basis, and is composed of ferrite or ferrite and a secondary phase, with ferrite grains being not greater than 3 &mgr;m and the secondary phase having an areal ratio not more than 30%. A steel pipe stock having the above-mentioned composition is heated at a temperature of (Ac1+50° C.) to 400° C. and subsequently reduced at a rolling temperature of (Ac1+50° C.) to 400° C.Type: GrantFiled: December 30, 1998Date of Patent: December 18, 2001Assignee: Kawasaki Steel CorporationInventors: Takaaki Toyooka, Akira Yorifuji, Masanori Nishimori, Motoaki Itadani, Yuji Hashimoto, Takatoshi Okabe, Nobuki Tanaka, Taro Kanayama, Osamu Furukimi, Masahiko Morita, Takaaki Hira, Saiji Matsuoka
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Publication number: 20010027831Abstract: A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (&mgr;m), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of &thgr;m (° C.) and a total reduction ratio Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, &thgr;m and Tred being in a relation satisfying a prescribed equation.Type: ApplicationFiled: January 30, 2001Publication date: October 11, 2001Applicant: Kawasaki Steel CorporationInventors: Takaaki Toyooka, Akira Yorifuji, Masanori Nishimori, Motoaki Itadani, Yuji Hashimoto, Takatoshi Okabe, Taro Kanayama, Masahiko Morita, Saiji Matsuoka, Nobuki Tanaka, Osamu Furukimi, Takaaki Hira
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Patent number: 6290789Abstract: A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (&mgr;m), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of &thgr;m (°C.) and a total reduction ration Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, &thgr;m and Tred being in a relation satisfying a prescribed equation.Type: GrantFiled: February 26, 1999Date of Patent: September 18, 2001Assignee: Kawasaki Steel CorporationInventors: Takaaki Toyooka, Akira Yorifuji, Masanori Nishimori, Motoaki Itadani, Yuji Hashimoto, Takatoshi Okabe, Taro Kanayama, Masahiko Morita, Saiji Matsuoka, Nobuki Tanaka, Osamu Furukimi, Takaaki Hira
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Patent number: 6221179Abstract: A hot rolled steel sheet with improved formability and producing method therefor, which can be easily produced with general hot strip mills, having less anisotropy of mechanical properties and final ferrite grain diameter of less than 2 &mgr;m that could not be achieved by the prior art. The hot rolled steel sheet comprises a ferrite phase as a primary phase, and has an average ferrite grain diameter of less than 2 &mgr;m, with the ferrite grains having an aspect ratio of less than 1.5. The hot rolled steel sheet is obtained by carried out a reduction process under a dynamic recrystallization conditions through reduction passes of not less than 5 stands in the hot finish rolling.Type: GrantFiled: June 22, 1999Date of Patent: April 24, 2001Assignee: Kawasaki Steel CorporationInventors: Eiko Yasuhara, Masahiko Morita, Osamu Furukimi, Susumu Okada
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Patent number: 6171412Abstract: Disclosed are bake-hardenable sheet steel with good anti-aging property and a method for producing it. While controlling its C, P, S and N contents, the chemical composition of the sheet steel is defined to comprise not larger than 1.0% of Si, not larger than 3.0% of Mn, from 0.01 to 0.20% of Al and from 0.001 to 0.2% of Ti, in terms of % by weight. The value A (=(AIQUENCH−AI)/AIQUENCH) of the sheet steel is defined to be not smaller than 0.4 and the value AIQUENCH thereof to be not smaller than 30; or the ratio of the mean misorientation, M (degree), to the mean grain size, G (&mgr;m), M/G, of the sheet steel is defined to be not smaller than 0.8. The steel may additionally contain from 0.001 to 0.2% of Nb and/or from 0.0001 to 0.0080% of B. While controlling its Si, Mn, S, Al and N contents, the chemical composition of a steel slab is defined to comprise from 0.005 to 0.02% of C, not larger than 0.05% of P and from 0.025 to 0.19% of Nb, with satisfying the condition of 0.Type: GrantFiled: November 25, 1998Date of Patent: January 9, 2001Assignee: Kawasaki Steel CorporationInventors: Saiji Matsuoka, Masahiko Morita, Osamu Furukimi, Takashi Obara, Tetsuya Kiyasu, Yoshio Yamazaki
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Patent number: 6027581Abstract: Cold rolled steel sheet with excellent deep drawability and excellent anti-aging properties, and manufacturing method. The cold rolled steel sheet comprises about C: above 0.015 to 0.150 wt %, Si: 1.0 wt % or less, Mn: 0.01 to 1.50 wt %, P: 0.10 wt % or less, S: 0.003 to 0.050 wt %, Al: 0.001 to below 0.010 wt %, N: 0.0001 to 0.0050 wt %, Ti: 0.001 wt % or more and Ti(wt %)/[1.5.times.S(wt %)+3.4.times.N(wt %)].ltoreq.about 1.0 and B: about 0.0001 to 0.0050 wt %, during annealing, grain growth is improved; Ti is added to form a nitride and a sulfide to avoid precipitation of fine TiC; B is added to precipitate Boron precipitates (Fe.sub.2 B, Fex(C,B)y) in a cooling the hot rolled steel sheet and in cooling step during annealing after cold rolling; a spherical cementite is precipitated and grown in which the Boron series precipitate is a precipitation site.Type: GrantFiled: September 23, 1997Date of Patent: February 22, 2000Assignee: Kawasaki Steel CorporationInventors: Kazunori Osawa, Masahiko Morita, Osamu Furukimi, Takashi Obara
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Patent number: 5948183Abstract: The present invention provides a hot-rolled steel sheet having a low yield ratio, a high specific strength, and excellent toughness. The hot-rolled steel sheet comprises: 0.005 to less than 0.030 weight percent of carbon, 1.5 weight percent or less of silicon, 1.5 weight percent or less of manganese, 0.020 weight percent or less of phosphorus, 0.015 weight percent or less of sulfur, 0.005 to 0.10 weight percent of aluminum, 0.0100 weight percent or less of nitrogen, 0.0002 to 0.0100 weight percent of boron, at least one element selected from the group consisting of 0.20 weight percent or less of titanium and 0.25 weight percent or less of niobium in an amount to satisfy (Ti+Nb/2)/C.gtoreq.4, and balance iron and incidental impurities. The metal structure is selected from the group consisting of ferrite and bainitic ferrite. The amount of carbon dissolved in grains ranges from 1.0 to 4.0 ppm. The present invention also provides a method for producing a hot-rolled steel sheet.Type: GrantFiled: October 8, 1997Date of Patent: September 7, 1999Assignee: Kawasaki Steel CorporationInventors: Susumu Okada, Masahiko Morita, Fumimaru Kawabata
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Patent number: 5853659Abstract: Steel having excellent workability and deep drawability is produced by an electric furnace-vacuum degassing process. The steel has a composition which comprises about:C: 0.0050 wt % or lessSi: 1.5 wt % or lessMn: 1.5 wt % or lessP: 0.10 wt % or lessAl: 0.10 wt % or lessS: 0.020 wt % or lessO: 0.01 wt % or lessCu: 0.02-1.5 wt %Ni: 0.02-2.0 wt %Ti and/or Nb: from 0.001 to 0.10 wt %N: from 0.0040 to 0.0090 wt %.Type: GrantFiled: February 26, 1997Date of Patent: December 29, 1998Assignee: Kawasaki Steel CorporationInventors: Takashi Sekita, Taro Yahiro, Saiji Matsuoka, Toshio Fujimura, Takemi Yamamoto, Masahiko Morita, Osamu Furukimi, Arata Ueda
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Patent number: 5582658Abstract: A high strength steel sheet adapted for press forming and method producing the same. The steel sheet containing by weight C: 0.01-0.1%, Si: 0.1-1.2%, Mn: not more than 3.0%, Ti:a value of (Ti%-1.5S%-3.43N%)/C% being 4-12, B: 0.0005-0.005%, Al: not more than 0.1%, P: not more than 0.1%, S: not more than 0.02%, N: not more than 0.05%. The method for producing the steel sheet wherein a steel slab containing the above mentioned component composition is heated and hot rolled in a temperature range of 1100-1280.degree. C. to provide a hot rolled sheet. The hot rolled sheet may be is subjected to cold rolling and annealing to provide a cold rolled sheet.Type: GrantFiled: December 13, 1995Date of Patent: December 10, 1996Assignee: Kawasaki Steel CorporationInventors: Susumu Masui, Kei Sakata, Fusao Togashi, Masahiko Morita, Toshiyuki Kato
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Patent number: 5382302Abstract: A high tensile steel sheet excelling in workability and stretch flanging formability, which is of a composite texture composed of a ferrite phase and a 2nd phase selected from the group consisting of martensite, bainite, pearlite, retained austenite and cold-transformed ferrite, wherein the volume fraction of the 2nd phase is hoe less than about 1.3 times higher at an outer region of the steel sheet than the volume fraction of the 2nd phase in a central region of the sheet thickness.Type: GrantFiled: April 13, 1994Date of Patent: January 17, 1995Assignee: Kawasaki Steel CorporationInventors: Susumu Okada, Kouichi Hirata, Susumu Sato, Masahiko Morita, Tsuguhiko Nakagawa
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Patent number: 5372654Abstract: The present invention provides a steel sheet for press working that exhibits excellent stiffness and satisfactory press workability. The steel sheet for press working includes: a composition of C+N+B=0.007 to 1.0 wt % in a region from the surface of the steel sheet to a position of 5% of the thickness in a direction of the thickness in at least either of the surface layers; a pole intensity of [{321}+{211}]/{100}.gtoreq.1.2 in a vertical direction to the sheet surface realized at a 3% thickness position in the direction of the thickness from the surface; and a composition of C+N+B=0.010 wt % less than in the central portion 40% except for two 30% portions of the two surface layers in the direction of the thickness.Type: GrantFiled: September 17, 1993Date of Patent: December 13, 1994Assignee: Kawasaki Steel CorporationInventors: Susumu Satoh, Susumu Okada, Kouichi Hirata, Masahiko Morita, Tsuguhiko Nakagawa
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Patent number: 5356494Abstract: The invention relates to a high strength cold rolled steel sheet having excellent non-aging property at room temperature and excellent drawability, said steel sheet having a dual-phase structure composed of a high-temperature transformed ferrite phase and a low-temperature transformed ferrite phase having high dislocation density.The invention also relates a high strength cold rolled steel sheet having excellent non-aging property at room temperature and bake hardenability, as well as excellent drawability. This steel sheet is produced by preparing a hot-rolled steel sheet, cold rolling the hot-rolled steel sheet at a rolling reduction not smaller than 60%, annealing the cold rolled steel sheet at a temperature which is not lower than the .gamma. transformation start temperature but below the A.sub.c3 transformation temperature, and cooling the annealed steel sheet at a rate not smaller than 5.degree. C./sec but not greater than 100.degree. C./sec.Type: GrantFiled: April 24, 1992Date of Patent: October 18, 1994Assignee: Kawasaki Steel CorporationInventors: Susumu Okada, Kei Sakata, Susumu Satoh, Masahiko Morita, Toshiyuki Kato
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Patent number: 5332453Abstract: A high tensile steel sheet excelling in workability and stretch flanging formability, which is of a composite texture composed of a ferrite phase and a 2nd phase selected from the group consisting of martensite, bainite, pearlite, retained austenite and cold-transformed ferrite, wherein the volume fraction of the 2nd phase is not less than about 1.3 times higher at an outer region of the steel sheet than the volume fraction of the 2nd phase in a central region of the sheet thickness.Type: GrantFiled: March 5, 1993Date of Patent: July 26, 1994Assignee: Kawasaki Steel CorporationInventors: Susumu Okada, Kouichi Hirata, Susumu Sato, Masahiko Morita, Tsuguhiko Nakagawa
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Patent number: 5312493Abstract: A low-yield-ratio high-strength hot-rolled steel sheet having the advantageous features of both conventional precipitation-strengthened steel and structure-strengthened steel and free from the drawbacks of these conventional steels, and a manufacturing method characterized in hot-rolling such a steel sheet. The steel sheet has an upper limit of C content of about 0.18 wt. %, and the lower C content limit approximately satisfies C.gtoreq.0.05+Ti/4+Nb/8 in relationship with the content of Ti and/or Nb. The steel sheet also contains about 0.5 to 2.5 wt. % Si and has a structure essentially formed of ferrite in which a carbide of Ti and/or Nb is precipitated, martensite and retained austenite.Type: GrantFiled: December 23, 1992Date of Patent: May 17, 1994Assignee: Kawasaki Steel CorporationInventors: Susumu Masui, Masahiko Morita, Toshiyuki Kato
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Patent number: 5290370Abstract: A high-tension steel sheet suitable for deep drawing and having superior surface treatment characteristics is made of a steel consisting essentially of, by weight: 0.001 to 0.05% of C; not more than 1.0% of Si; not more than 2.5% of Mn; 0.05 to 1.0% of Mo; one or both of 0.001 to 0.2% of Nb and not more than 0.3% of Ti, wherein Ti*%+(48/93)Nb%.gtoreq.(48/12)C% in which Ti*%=Ti%-(48/32) S%-(48/14)N%, wherein, when Ti*%<0, Ti*% is regarded as being 0; 0.0005 to 0.01% of B; 0.01 to 0.10% of Al; not more than 0.15% of P; not more than 0.010% of S; not more than 0.006% of N; Si, Mn and P meeting the condition of 0.2<(Si%+10P%)/Mn%<3.3; and the balance substantially Fe and incidental impurities. This steel sheet is produced by a process which includes: hot-rolling the steel slab to obtain a hot rolled steel strip at a final hot-rolling temperature not lower than the Ar.sub.3 transformation temperature; coiling the steel strip at a temperature not lower than 300.degree. C. but not higher than 615.degree. C.Type: GrantFiled: August 17, 1992Date of Patent: March 1, 1994Assignee: Kawasaki Steel CorporationInventors: Susumu Okada, Susumu Masui, Susumu Satoh, Kei Sakata, Masahiko Morita, Toshiyuki Kato
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Patent number: 5139583Abstract: A graphite precipitated hot-rolled steel plate having excellent bending workability and hardenability, the graphite precipitated hot-rolled steel plate comprising: 0.1 to 1.0% (by weight percent) C; 0.05 to 1.0% (by weight percent) Mn; 3 to 50 ppm B; 200 ppm or less N the quantity of which is three times or more the quantity of B; and a balance of Fe and unavoidable impurities, wherein graphite the diameter of which is 5 .mu.m or less is precipitated in such a manner that distance between graphite particles is at a distance of 5 .mu.m or longer.Type: GrantFiled: January 21, 1992Date of Patent: August 18, 1992Assignee: Kawasaki Steel CorporationInventors: Yoshikazu Kawabata, Masahiko Morita, Fusao Togashi
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Patent number: 5074934Abstract: A flexible hot rolled steel sheet having an improved deep drawability comprises not more than 0.10 wt % of C, less than 0.20 wt % of Mn, 0.10-2.0 wt % of Cr, 0.002-0.100 wt % of Al, and the balance being Fe and inevitable impurities or further contains particular amounts of at least one of Ti, Nb and Zr and/or B. Such a hot rolled steel sheet has a tensile strength of not more than 35 kgf/mm.sup.2 and a total elongation of not less than 50%.Type: GrantFiled: April 5, 1990Date of Patent: December 24, 1991Assignee: Kawasaki Steel CorporationInventors: Masahiko Morita, Koichi Hashiguchi, Fusao Togashi
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Patent number: 4974424Abstract: A laminar flow cooling system employs a laminar flow nozzle comprising a pair of plate members defining slit through which cooling water flows to form a cooling water screen. One of the plate members of the laminar nozzle is deformable at least in a direction perpendicular to the cooling water flow direction to adjust the path area in the nozzle. At least one of the plate member is preferably responsive to the cooling water pressure to cause variation of the path area for adjusting the cooling water path area.Type: GrantFiled: August 23, 1988Date of Patent: December 4, 1990Assignee: Kawasaki Steel Corp.Inventors: Akio Tosaka, Koichi Hashiguchi, Masahiko Morita, Shinobu Okano
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Patent number: 4709557Abstract: A laminar flow cooling system employs a laminar flow nozzle comprising a pair of plate members defining slit through which cooling water flows to form a cooling water screen. One of the plate members of the laminar nozzle is deformable at least in a direction perpendicular to the cooling water flow direction to adjust the path area in the nozzle. At least one of the plate member is preferably responsive to the cooling water pressure to cause variation of the path area for adjusting the cooling water path area.Type: GrantFiled: February 3, 1987Date of Patent: December 1, 1987Assignee: Kawasaki Steel CorporationInventors: Akio Tosaka, Koichi Hashiguchi, Masahiko Morita, Shinobu Okano