Patents by Inventor Takeshi Kuroda
Takeshi Kuroda 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).
-
Patent number: 6372056Abstract: A spring steel which is superior in both shaving properties and green drawing properties, which are important in spring production. A process for making the spring steel into wire rods for good springs. A rolled spring steel superior in workability characterized in that it has the following mechanical properties. Tensile strength≦1200 MPa 30%≦reduction of area≦70% A process for producing a steel wire rod for springs from said spring steel, said process comprising drawing, shaving, and oil tempering, which are carried out sequentially, said drawing being optionally followed by prescribed treatment.Type: GrantFiled: December 20, 1999Date of Patent: April 16, 2002Assignee: Kobe Steel Ltd.Inventors: Takeshi Kuroda, Nobuhiko Ibaraki, Nao Yoshihara
-
Patent number: 6328820Abstract: A spring steel containing SiO2, Al2O3, CaO, and MgO as oxide type inclusions, which have an average composition (by weight) of 35%≦SiO2≦75%, 5%≦Al2O3≦30%, 10%≦CaO≦50%, and MgO≦5% (excluding 0%). This spring steel is superior in fatigue properties.Type: GrantFiled: December 15, 1999Date of Patent: December 11, 2001Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Yoshinori Yamamoto, Masaki Nitta, Daisuke Ogura, Yoshio Fukuzaki, Takeshi Kuroda
-
Patent number: 6325270Abstract: A solder removing apparatus comprises a stage and a head portion. A top face of the stage is a flat surface, and the stage can arbitrarily move in a direction parallel to the top face. On the stage are arranged a first member supplying portion on which one or more first members are located, a second member supplying portion on which one or more second members are located, and a heating portion for heating a member located thereon at an arbitrary temperature. The head comprises a first head and a second head. The first head and the second head can move along the same moving axis in a direction vertical to the top face of the stage independently from each other. The first head adsorbs the first member located on the first member supplying portion and locates the first member on the heating portion. The second head adsorbs the second member located on the second member supplying portion and locates the second member on the first member located on the heating portion.Type: GrantFiled: June 22, 2000Date of Patent: December 4, 2001Assignee: Hitachi, Ltd.Inventors: Takeshi Kuroda, Kaoru Katayama, Takeshi Takahashi, Naoki Watanabe
-
Patent number: 6213786Abstract: A multi-pin connector has contact pins fixedly soldered into bottomed connection holes which are in desired positions on a printed board, so that the contact pins are arrayed in a desired form without a housing. The multi-pin connector can be manufactured in a short period of time and can have any pitch, any number of pins and any shape.Type: GrantFiled: August 3, 2000Date of Patent: April 10, 2001Assignee: Hitachi, Ltd.Inventors: Kiyoshi Matsui, Takayuki Ono, Kenichi Kasai, Tsutomu Imai, Morio Suzuki, Hideyuki Fukasawa, Mitugu Shirai, Toshitaka Murakawa, Takeji Siokawa, Takeshi Kuroda
-
Patent number: 6132221Abstract: A multi-pin connector for mounting other boards or electronic parts on a main board, has contact pins fixedly soldered into bottomed connection holes which are in desired positions on the main board, so that the contact pins are secured separately and arrayed in a desired form without a housing. The contact pins have contact portions and pin portions, with the pin portions being secured in the connection holes.Type: GrantFiled: April 22, 1998Date of Patent: October 17, 2000Assignee: Hitachi, Ltd.Inventors: Kiyoshi Matsui, Takayuki Ono, Kenichi Kasai, Tsutomu Imai, Morio Suzuki, Hideyuki Fukasawa, Mitugu Shirai, Toshitaka Murakawa, Takeji Siokawa, Takeshi Kuroda
-
Patent number: 6032382Abstract: When an IPA is fed to a nozzle, a flow of the IPA passing through holes is generated. The flow becomes film-shaped and goes downward along an inner surface of a side wall of a processing vessel. Then, the flow is collected by a liquid receiving section formed in a lower portion of the processing vessel and discharged to an outside. The inner surface of the side wall of the processing vessel is covered with the flow of the IPA. Therefore, an IPA vapor can be prevented from condensing uselessly on the inner surface. As a result, the IPA vapor is effectively utilized for condensation on a surface of the object to be processed which is mounted on a pan. Thus, the defective dryness of the object can be prevented.Type: GrantFiled: November 12, 1997Date of Patent: March 7, 2000Assignees: Mitsubishi Denki Kabushiki Kaisha, Ryoden Semiconductor System Engineering CorporationInventors: Akinori Matsumoto, Takeshi Kuroda, Cozy Ban, Toko Konishi, Naoki Yokoi
-
Patent number: 5996242Abstract: A nozzle and an exhaust member are provided opposite to each other with an upward opening of a processing vessel interposed therebetween. A side wall of the processing vessel is smoothly curved inward as the opening is approached upward. The nozzle spouts a nitrogen gas fed from a nitrogen gas feeder as a jet for covering the opening toward an exhaust port of the exhaust member. The jet can effectively function as a curtain because the side wall of the processing vessel is curved. Therefore, a cooling coil necessary for a conventional apparatus is not required. Consequently, instability of the state of the IPA vapor caused by the cooling coil can be eliminated so that defective dryness is relieved or eliminated.Type: GrantFiled: September 23, 1997Date of Patent: December 7, 1999Assignees: Ryoden Semiconductor System Engineering Corporation, Mitsubishi Denki Kabushiki KaishaInventors: Akinori Matsumoto, Takeshi Kuroda, Cozy Ban, Toko Konishi, Naoki Yokoi
-
Patent number: 5956859Abstract: A drying apparatus for processing a surface of a substrate wherein, when a nitrogen gas is fed to a nozzle, a jet of the nitrogen gas spouted through a jet hole is generated. The jet becomes film-shaped and is projected upwardly along an inner surface of a side wall of a processing vessel. Then, the jet is collected into an outside through a suction port formed in an upper portion of the processing vessel. The inner surface of the side wall of the processing vessel is covered with the jet. Therefore, an IPA vapor can be prevented from condensing uselessly on the inner surface. As a result, the IPA vapor is effectively utilized for condensation on a surface of the object to be processed which is mounted on a pan. Thus, defective dryness of the object can be prevented.Type: GrantFiled: October 28, 1997Date of Patent: September 28, 1999Assignees: Ryoden Semiconductor System Emgineering Corporation, Mitsubishi Denki Kabushiki KaishaInventors: Akinori Matsumoto, Takeshi Kuroda, Cozy Ban, Toko Konishi, Naoki Yokoi
-
Patent number: 5854713Abstract: In a reflection type angle of view transforming optical apparatus for transforming an angle of view in an image apparatus and so forth, sufficient strength can be provided and process is facilitated by using reflecting mirrors in a wide angle optical system. The reflection type angle of view transforming optical apparatus includes a primary mirror 8 having a reflecting surface provided in an axisymmetric form to reflect incident light 12 as primary reflected light 13, a secondary mirror 10 having a reflecting surface provided in an axisymmetric form about the same axis of rotational symmetry 9 as that of the primary mirror 8, opposed to the primary mirror 8 so as to reflect the primary reflected light 13 and to get secondary reflected light 14 for focusing on a view point, and a transparent case 11 to support the primary mirror 8 and the secondary mirror 10, and transmit the incident light 12.Type: GrantFiled: August 2, 1996Date of Patent: December 29, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takeshi Kuroda, Akito Takeya, Kenichi Nishiguchi, Akira Ichikawa
-
Patent number: 5746233Abstract: Obtained are a washing apparatus inhibiting a washing liquid from losing its washability and a method therefor. A circulating pump (5) circulates a washing liquid (3) successively through a heater (6), a filter (7), and an overflow washing tank (2). The washing liquid (3) is gradually evaporated. On the other hand, a water supplier (10) supplies the overflow washing tank (2) with water through a tube (8). An amine supplier (11) supplies the overflow washing tank (2) with amines through a tube (9). A control unit (12) controls the quantities of the water and amines as supplied. In a washing part (50), therefore, the quantities of the water and amines are inhibited from being reduced upon a lapse of time from operation starting, whereby the washing liquid (3) is inhibited from losing its washability.Type: GrantFiled: July 11, 1996Date of Patent: May 5, 1998Assignees: Mitsubishi Denki Kabushiki Kaisha, Ryoden Semiconductor System Engineering CorporationInventors: Takeshi Kuroda, Itaru Kanno
-
Patent number: 5743009Abstract: Ends of contact pins are inserted into bottomed connection holes which are in desired positions on a printed board, so that the contact pins are arrayed in the desired form. By effecting solder reflow in this state, the contact pins are fixedly soldered to the connection holes. A multi-pin connector is thus provided, which can be manufactured with ease in a short period of time and which can have any pitch, any number of pins and any shape.Type: GrantFiled: April 4, 1996Date of Patent: April 28, 1998Assignee: Hitachi, Ltd.Inventors: Kiyoshi Matsui, Takayuki Ono, Kenichi Kasai, Tsutomu Imai, Morio Suzuki, Hideyuki Fukasawa, Mitugu Shirai, Toshitaka Murakawa, Takeji Siokawa, Takeshi Kuroda
-
Patent number: 5536730Abstract: Disclosed are imidazonaphthyridine derivatives represented by formula (I) ##STR1## wherein: R.sup.1 represents lower alkyl or substituted or unsubstituted aryl; andX-Y-Z represents ##STR2## wherein R.sup.2 represents hydrogen, lower alkyl, alkenyl, aralkenyl, or --C(R.sup.5)H--(CH.sub.2).sub.n --R.sup.4 (wherein R.sup.4 represents substituted or unsubstituted aryl, substituted or unsubstituted pyridyl, substituted or unsubstituted furyl, hydroxy-substituted lower alkyl, lower alkanoyloxy, morpholino, lower alkanoyl, carboxy, lower alkoxycarbonyl, cycloalkyl, hydroxy, lower alkoxy, halogen or NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 independently represents hydrogen, or lower alkyl; R.sup.5 represents hydrogen, lower alkyl, or phenyl; and n represents an integer of 0 to 3); and R.sup.3 represents hydrogen, mercapto, hydroxy, lower alkyl, or aryl and pharmaceutically acceptable salts thereof.The compounds show a potent anti-inflammatory, anti-allergic and broncho-dilative activity.Type: GrantFiled: September 11, 1995Date of Patent: July 16, 1996Assignee: Kyowa Hakko Kogyo Co. Ltd.Inventors: Fumio Suzuki, Takeshi Kuroda, Shigeto Kitamura, Kenji Ohmori
-
Patent number: 5484924Abstract: The present invention relates to novel imidazonaphthyridine derivatives represented by the following formulae: ##STR1## wherein R represents hydrogen, lower alkyl or --CH.sup.2 R.sup.1 (where R.sup.1 represents phenyl or pyridyl) and pharmaceutically acceptable salts thereof.The compounds exhibit excellent anti-allergic, anti-inflammatory and anti-asthmatic activities.Type: GrantFiled: August 31, 1994Date of Patent: January 16, 1996Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Takeshi Kuroda, Takashi Kawakita, Shigeto Kitamura, Haruhiko Manabe
-
Patent number: 5468756Abstract: Disclosed are imidazonaphthyridine derivatives represented by formula (I) ##STR1## wherein: R.sup.1 represents lower alkyl or substituted or unsubstituted aryl; andX--Y--Z represents ##STR2## wherein R.sup.2 represents hydrogen, lower alkyl, alkenyl, aralkenyl, or --C (R.sup.5)H--(CH.sub.2).sub.n --R.sup.4 (wherein R.sup.4 represents substituted or unsubstituted aryl, substituted or unsubstituted pyridyl, substituted or unsubstituted furyl, hydroxy-substituted lower alkyl, lower alkanoyloxy, morpholino, lower alkanoyl, carboxy, lower alkoxycarbonyl, cycloalkyl, hydroxy, lower alkoxy, halogen or NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 independently represents hydrogen or lower alkyl; R.sup.5 represents hydrogen, lower alkyl, or phenyl; and n represents an integer of 0 to 3); and R.sup.3 represents hydrogen, mercapto, hydroxy, lower alkyl, or aryland pharmaceutically acceptable salts thereof.The compounds show a potent anti-inflammatory, anti-allergic and broncho-dilative activity.Type: GrantFiled: May 12, 1994Date of Patent: November 21, 1995Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Takeshi Kuroda, Shigeto Kitamura, Kenji Ohmori
-
Patent number: 5364859Abstract: Disclosed are imidazonaphthyridine derivatives represented by formula (I) ##STR1## wherein: R.sup.1 represents lower alkyl or substituted or unsubstituted aryl; andX-Y-Z represents ##STR2## wherein R.sup.2 represents hydrogen, lower alkyl, alkenyl, aralkenyl, or --C (R.sup.5) H--(CH.sub.2).sub.n --R.sup.4 (wherein R.sup.4 represents substituted or unsubstituted aryl, substituted or unsubstituted pyridyl, substituted or unsubstituted furyl, hydroxy-substituted lower alkyl, lower alkanoyloxy, morpholino, lower alkanoyl, carboxy, lower alkoxycarbonyl, cycloalkyl, hydroxy, lower alkoxy, halogen or NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 independently represents hydrogen or lower alkyl; R.sup.5 represents hydrogen, lower alkyl, or phenyl; and n represents an integer of 0 to 3); and R.sup.3 represents hydrogen, mercapto, hydroxy, lower alkyl, or aryl and pharmaceutically acceptable sails thereof.The compounds show a potent anti-inflammatory, anti-allergic and broncho-dilative activity.Type: GrantFiled: December 29, 1992Date of Patent: November 15, 1994Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Takeshi Kuroda, Shigeto Kitamura, Kenji Ohmori
-
Patent number: 5342843Abstract: The present invention relates to a thienoimidazopyridone derivative represented by Formula (I): ##STR1## wherein A and B independently represent --S-- or --CH.dbd., X-Y-Z represents --N(R.sup.2)--CH.dbd.N-- or --N.dbd.CH--N (R.sup.2)-- wherein R.sup.2 is hydrogen, lower alkyl or --CH(R.sup.3)--(CH.sub.2).sub.n --R.sup.4 wherein R.sup.4 is phenyl, n is 0 or 1, and R.sup.3 is hydrogen or lower alkyl, and R.sup.1 represents lower alkyl, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: August 6, 1993Date of Patent: August 30, 1994Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Yoshikazu Miwa, Takeshi Kuroda, Shigeto Kitamura, Haruhiko Manabe
-
Patent number: 5319085Abstract: Quinoline derivatives represented by formula (I): ##STR1## wherein A-B-D represents --C(COO--Y).dbd.CH--C(OR).dbd. (wherein Y represents 8-methyl-8-azabicyclo[3.2.1]oct-3-yl group and R represents alkyl) or --C(OH).dbd.C(COX--Y)--CH.dbd. (wherein X represents --O-- or --NH--; and Y has the same meaning as described above), or a pharmaceutically acceptable salt thereof, possess potent 5HT.sub.3 antagonizing activity and are useful as antiemetic agents.Type: GrantFiled: April 16, 1993Date of Patent: June 7, 1994Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Hiroaki Hayashi, Yoshikazu Miwa, Takeshi Kuroda, Akio Ishii, Shunji Ichikawa, Ichiro Miki, Katsuichi Shuto
-
Patent number: 5286292Abstract: Commercially available fly ash is prepared and charged in a vessel. A halogen gas is supplied to the vessel and is brought into contact with the fly ash in the vessel.Type: GrantFiled: June 26, 1992Date of Patent: February 15, 1994Assignee: Onoda Cement Co., Ltd.Inventors: Kazuhisa Tsukada, Takeshi Kuroda, Takane Mukaino, Yukinori Saiki
-
Patent number: 5281610Abstract: Disclosed is a pyrazolonaphthyridine compound represented by the formula: ##STR1## wherein R.sup.1 is represents hydrogen, lower alkyl, aralkyl, or substituted or unsubstituted aryl, R.sup.2 represents hydrogen, lower alkyl, thienyl, substituted or unsubsutituted aryl, hydroxy or amino, or a pharmaceutically acceptable salt thereof.The compound possesses antiinflammatory effect, immunosuppressive effect, broncho-dilatory effect and hair growth-stimulative effect.Type: GrantFiled: December 18, 1992Date of Patent: January 25, 1994Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Takashi Kawakita, Takeshi Kuroda, Kenji Ohmori, Hiroshi Nakajima, Toshikazu Kamiya, Tatsuya Tamaoki
-
Patent number: 5270316Abstract: There are disclosed condensed purine derivatives represented by formula; ##STR1## in which R.sup.3 represents hydrogen, lower alkyl or benzyl; each of X.sup.1 and X.sup.2 independently represents hydrogen, lower alkyl, aralkyl or phenyl; and n is an integer of 0 or 1; R.sup.1 represents hydrogen, lower alkyl, alicyclic alkyl, noradamantan-3-yl, dicyclopropylmethyl or styryl; and R.sup.2 represents hydrogen, lower alkyl or alicyclic alkyl; or a pharmaceutically acceptable salt thereof. The derivatives and pharmaceutically acceptable salts are useful as diuretics, renal protecting agents, antiallergic agents and hypotensives.Type: GrantFiled: October 19, 1990Date of Patent: December 14, 1993Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Fumio Suzuki, Junichi Shimada, Takeshi Kuroda, Kazuhiro Kubo, Akira Karasawa, Tetsuji Ohno, Kenji Ohmori