Patents by Inventor Fumio Nakano

Fumio Nakano 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: 5223342
    Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon group is excellent in durability and exhibits good lubricating effect for a long period of time.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: June 29, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuyoshi Shoji, Yutaka Ito, Fumio Nakano, Toshikazu Narahara
  • Patent number: 5219651
    Abstract: A magnetic recording medium which comprises a non-magnetic substrate, a thin film magnetic layer formed on the surface of the substrate and an organic thin film protective layer formed on the magnetic layer, the organic thin film protective layer having a thickness of not more than 100 nm and containing a filler having a particle size of not more than 50 nm, wherein the surface of the organic thin film protective layer is further coated with a fluorine-based compound represented by the following general formula:F(C.sub.3 F.sub.6 --I--).sub.x --C.sub.2 F.sub.4 --,F(C.sub.3 F.sub.6 --O--).sub.x --(CF.sub.2 O).sub.y --(CF.sub.2).sub.z --or--(C.sub.2 F.sub.4 --O--).sub.y --(CF.sub.2 --CF.sub.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: June 15, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuyosi Shoji, Takayuki Nakakawaji, Yutaka Ito, Shigeki Komatsuzaki, Fumio Nakano
  • Patent number: 5162163
    Abstract: This invention relates to a magnetic recording medium wherein the improvement comprises a lubricative film comprising a lubricant having a functional group at one end of the molecule and a lubricant having a functional group at both ends of the molecule. According to the present invention, there are provided a magnetic recording medium having excellent sliding tolerance against the head, reduced adhesiveness and dense surface, and a magnetic storage device using such a recording medium.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: November 10, 1992
    Assignee: Hitachi Ltd.
    Inventors: Sakae Ohta, Hiroyuki Matsumoto, Miyuki Kajiki, Makoto Komatsu, Kenzo Masuda, Fumio Nakano
  • Patent number: 5095013
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a hydrogen atom or a lower alkyl group, each of R.sup.3, R.sup.4 and R.sup.5 is a hydrogen atom or a lower alkyl group, or R.sup.3 and R.sup.4 together form a methylene group, an ethylene group or a propylene group, or R.sup.4 and R.sup.5 form together with the adjacent nitrogen atom an aziridinyl group, an azetidinyl group, a pyrrolidinyl group, a piperidino group, a piperazinyl group or a morpholino group; or a pharmaceutically acceptable salt or ester thereof.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: March 10, 1992
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Fumio Nakano, Norikazu Otake, Ryosuke Ushijima
  • Patent number: 5084453
    Abstract: The present invention relates to a compound having the formula: ##STR1## wherein R is a hydrogen atom, a carboxyl-protecting group or a negative charge and Q is a hydrogen atom, a halogen atom, a hydroxyl group, an acetoxy group, a carbamoyl group, an azide group, a substituted or unsubstituted quarternary ammonio group or a substituted or unsubstituted heterocyclic thio group having at least one hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, or a non-toxic salt or physiologically hydrolyzable non-toxic ester thereof; a process for producing it; and an antibacterial agent comprising it as an active ingredient.Further, the present invention also relates to a compound having the formula: ##STR2## wherein R.sup.3 is a hydrogen atom or an amino-protecting group, and each of R.sup.4 and R.sup.5 which may be the same or different is a hydrogen atom or a carboxyl-protecting group, or a salt thereof; and a process for producing it.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: January 28, 1992
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Ryuji Mitomo, Koji Yamada, Norikazu Otake, Fumio Nakano, Akira Asai, Satoru Kuroyanagi, Yoshiharu Tanaka, Moriaki Ishikawa, Ryosuke Ushijima
  • Patent number: 5079062
    Abstract: In a magnetic recording medium in which a thin film of a magnetic material is disposed on a surface of a base of a non-magnetic material directly or through an undercoated film, powder of a material substantially the same as that of the non-magnetic base or an undercoated film is disposed directly beneath the magnetic thin film to form dispersed projections on the surface of the magnetic recording medium. Thus, the product has surface projections, and its magnetic thin film has a generally uniform thickness and uniform magnetic properties.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: January 7, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Kenzo Masuda, Masaaki Imamura, Fumio Nakano
  • Patent number: 5071715
    Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon, at least the surface portion of said magnetic layer being made from an organic compound having a perfluoro group and a hydrocarbon containing group is excellent in durability and exhibits good lubricating effect for a long period of time.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: December 10, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuyoshi Shoji, Yutaka Ito, Fumio Nakano, Toshikazu Narahara
  • Patent number: 5068322
    Abstract: The present invention relates to stable crystalline (6R,7R)-7-(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxylimino)ac etamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carbox ylate sulfate or its hydrate, a process for production of the compound and (6R,7R)-7-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxyimino) acetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carb oxylate hydrochloride or its hydrate which is a starting material useful for the production of the desired compound of the present invention.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: November 26, 1991
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Ryosuke Ushijima, Fumio Nakano, Koji Yamada, Eiichi Mano
  • Patent number: 5061794
    Abstract: A compound having the formula: ##STR1## wherein R is a straight chain or branched chain lower alkyl, cyclic lower alkyl, lower alkenyl (except for 1-carboxy-1-vinyl), lower alkynyl, aralkyl, phenyl or 2-pyrrolidon-3-yl group which may be substituted, and Q is ##STR2## (wherein R.sup.1 is a hydrogen atom or an acetyl group, R.sup.2 is a hydrogen atom, a carboxyl group or a carboxymethyl group, Y is a sulfur atom or an oxygen atom, Z is a sulfur atom, an oxygen atom or an imino group which may be substituted by a lower alkyl group); or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: October 29, 1991
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Koji Yamada, Fumio Nakano, Norikazu Otake, Akira Asai, Satoru Kuroyanagi, Yoshiharu Tanaka, Moriaki Ishikawa, Ryosuke Ushijima, Ryuji Mitomo
  • Patent number: 4970575
    Abstract: A substrate and semiconductor chips are connected by solder bumps and a vacant space around the solder bumps is coated with resin in such a degree that the tops of the semiconductor chips are not coated therewith. Epoxy resin or a resin having a smaller thermal expansion coefficient than the epoxy resin is used in the resin coating, and an inorganic material having a smaller thermal expansion coefficient than said resin is mixed therein.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 13, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Tasao Soga, Hiroaki Hachino, Mamoru Sawahata, Fumio Nakano, Fumiyuki Kobayashi, Seigou Yukutake
  • Patent number: 4959469
    Abstract: The present invention relates to stable cyrstalline (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxyimino)ac etamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)-3-cephem-4-carboxylate sulfate or its hydrate, a process for production of the compound and (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(1-carboxyl-1-methylethoxyimino)a cetamido]-3-(5,6-dihydroxy-2-methyl-2-isoindolinium)methyl-3-cephem-4-carbo xylate hydrochloride or its hydrate which is a starting material useful for the production of the desired compound of the present invention.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: September 25, 1990
    Assignee: Banyu Pharmaceutical Company, Ltd.
    Inventors: Susumu Nakagawa, Ryosuke Ushijima, Fumio Nakano, Koji Yamada, Eiichi Mano
  • Patent number: 4883868
    Abstract: A compound having the formula: ##STR1## wherein R.sup.1 is an amino group or a protected amino group, R.sup.2 is a hydrogen atom or a protecting group for a hydroxyl group, R.sup.3 represents negative charge, a hydrogen atom or a protecting group for a carboxyl group, and n is 0 or 1, and a salt thereof.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: November 28, 1989
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Ryosuke Ushijima, Fumio Nakano, Koji Yamada, Eiichi Mano
  • Patent number: 4828924
    Abstract: A magnetic recording medium of high durability comprising a substrate material and a magnetic layer provided on at least one surface of the substrate material, the magnetic layer comprising magnetic powder and a resinous binder, characterized in that the magnetic layer comprises further at least one compound of the formula:Rf--CH.sub.2 --R).sub.m X (I)wherein Rf is a fluorinated polyoxyalkyl group having 8 to 152 carbon atoms, R is an oxyalkylene group having 2 or 3 carbon atoms, X is a polar group such as --OH, --OCH.sub.3, -O-lower alkylene-COOH or -O-CO-lower alkylene-OH and m is an integer of not less than 1 uniformly and entirely dispersed in the magnetic layer.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: May 9, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Mitsutoshi Shoji, Koo Honjoo, Yoshiharu Honma, Fumio Nakano, Toshikazu Narahara
  • Patent number: 4825284
    Abstract: A semiconductor resin package structure formed according to the flip-chip connection method and permitting to cool the rear surface of semiconductor chips, comprising semiconductor chip and carrier substrate which is soldered on one surface thereof to electrodes of the semiconductor chip according to the flip-chip connection method, the gap between the semiconductor chip and the carrier substrate being filled with resin having a thermal expansion coefficient, which is approximately equal to that of used solder, the electrodes of the semiconductor chip being electrically connected with terminals on the other surface of the carrier substrate through the soldered portions and a through-hole conductor disposed on the carrier substrate, the thermal expansion coefficient of the carrier substrate being approximately equal to that of a multi-layer substrate, with which the substrate is connected by soldering with the terminals.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: April 25, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Tasao Soga, Marahiro Goda, Fumio Nakano, Tadao Kushima, Nobuyuki Ushifusa, Fumiyuki Kobayashi, Mamoru Sawahata
  • Patent number: 4803000
    Abstract: A lubricating composition comprising (A) at least one member selected from (a) a polyoxyalkylene alkyl ether phosphate diester, (b) a polyoxyalkylene alkylphenyl ether phosphate diester and (c) a phosphonate ester, in an amount of 3% by weight or more, (B) an N,N'-ethylenebis acid amide having an average particle size of 1 .mu.m or more in an amount of 2 to 15% by weight, and if necessary (C) a lubricating oil having a viscosity of 5 mm.sup.2 /s or more ('.degree. C.) is suitable for cold plastic working of aluminum alloys, particularly age-hardening type aluminum alloys, at the reduction of area of 35% or more.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: February 7, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Takao Uematsu, Hiroshi Suzuki, Shigeki Komatsuzaki, Fumio Nakano
  • Patent number: 4743609
    Abstract: This invention provides a class of new indole derivatives which are useful as medicinal compounds having a mild inhibitory effect on the gastric acid secretion as well as a remarkably cytoprotective effects on gastric muscosa, and which are represented by the general formula: ##STR1##
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Masaaki Hosoi, Fumio Nakano, Kenji Matsuyama, Hiroshi Takeshita, Kenji Niiyama, Susumu Nakagawa
  • Patent number: 4677100
    Abstract: A compound having the formula: ##STR1## wherein R.sup.1 is a straight chain, branched chain or cyclic lower alkyl group which may be substituted by a carboxyl group, and each of R.sup.2 and R.sup.3 which may be the same or different, is a hydrogen atom, a hydroxyl group, a methoxy group or an acetoxy group, and R.sup.4 is a hydroxyl group, a methoxy group or an acetoxy group; or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: June 30, 1987
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Ryosuke Ushijima, Fumio Nakano, Koji Yamada, Eiichi Mano
  • Patent number: 4657685
    Abstract: A substantially water-free, emulsion type liquid lubricant for metal forming which comprises:(a) a lubricating oil,(b) at least one of phosphoric acid esters represented by the general formula: ##STR1## wherein R is alkyl, alkylalkenyl or aryl; n is an integer of 1 to 2, and (c) an emulsifying agent,an average particle size of the phosphoric acid ester being 0.3 to 120 .mu.m, can form a lubricating film having distinguished heat resistance and lubricating properties by virtue of the heat generated by deformation and friction during the metal forming only by wetting the surface of a metallic workpiece or a die or both with the lubricant and work effectively for preventing galling, and thus parts with a high reduction of area or parts of complicated shapes can be readily formed.A lubricating film having a lubricating effect equivalent to that of the conventional phasphate film can be simply obtained, greatly contributing to reduction in product cost.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: April 14, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Takao Uematsu, Shigeki Komatsuzaki, Fumio Nakano, Tomoe Takamura
  • Patent number: 4612128
    Abstract: A lubricating composition comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol, and (c) at least one compound selected from phosphate monoesters and diesters and phosphonates is suitable for metal forming, particularly for plastic working of aluminum and aluminum alloy with excellent formability and heat resistance.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: September 16, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Takao Uematsu, Hiroshi Suzuki, Shigeki Komatsuzaki, Fumio Nakano
  • Patent number: RE33120
    Abstract: A method for driving a liquid crystal element including a ferroelectric liquid crystal sandwiched between a pair of substrates having electrodes on their opposite surfaces is disclosed. A pulse voltage for defining the light transmitting state of the liquid crystal element is applied to the ferroelectric liquid crystal. Before and/or after the application of the pulse voltage, the ferroelectric liquid crystal is applied with a voltage signal which renders the average value of voltages applied to the ferroelectric liquid crystal equal to zero.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: November 28, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiharu Nagae, Masato Isogai, Hideaki Kawakami, Fumio Nakano