Patents by Inventor Hiroshi Mikami

Hiroshi Mikami 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: 7544781
    Abstract: A process for producing a polypeptide, by reacting a peptide component (A) represented by formula (1) below with a peptide component (B) represented by formula (2) below and optionally a compound (C) represented by formula (3) below, to obtain said polypeptide: (1) X-(Pro-Y-Gly)n-OH, wherein: X represents H or the group HOOC—(CH2)m—CO— and m denotes an integer of 1 to 18, Y represents Pro or Hyp, and n denotes an integer of 1 to 20; (2) X-(Z)r—OH, wherein X represents H or the group HOOC—(CH2)m—CO— and m denotes an integer of 1 to 18, Z represents a peptide chain comprising 1 to 10 amino acid residue(s), and r denotes an integer of 1 to 20; and (3) H2N—R—NH2, wherein R represents a linear or branched alkylene group; and further wherein the ratio of the peptide component (A) relative to the peptide component (B) is 100/0 to 30/70 (mol %); provided that in the case where X represents the group HOOC—(CH2)m—CO— and m has the same meaning as defined above in formula (1) and/or (2), the amount of compou
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: June 9, 2009
    Assignee: PHG Corporation
    Inventors: Masao Tanihara, Chikara Otsuki, Hiroshi Mikami, Hisao Kinoshita
  • Patent number: 7459570
    Abstract: There is provided biphenyltetracarboxylic dianhydride containing biphenyltetracarboxylic monoanhydride in an amount of not more than 0.4%. By using the biphenyltetracarboxylic dianhydride as a raw material, it is possible to produce polyimide or polyamic acid having an increased molecular weight.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: December 2, 2008
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroshi Mikami, Takeshi Sano, Makoto Nitta
  • Publication number: 20080281073
    Abstract: It is to provide a high purity oxydiphthalic anhydride with which, in production of a polyimide containing an oxydiphthalic anhydride, one having sufficiently high strength can be produced, and an industrially simple process for producing it. A high purity oxydiphthalic anhydride, which has a content of fine insoluble particles having a projected area diameter of from 5 to 20 ?m, of at most 3,000 particles per 1 g, and has a light transmittance at 400 nm of at least 98.5% in a light path length of 1 cm when dissolved in acetonitrile at a concentration of 4 g/L.
    Type: Application
    Filed: December 7, 2005
    Publication date: November 13, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuhiro Nagayama, Toshiharu Yokoyama, Jun Takahara, Makoto Nitta, Hiroshi Mikami
  • Publication number: 20080214841
    Abstract: There is provided biphenyltetracarboxylic dianhydride containing biphenyltetracarboxylic monoanhydride in an amount of not more than 0.4%. By using the biphenyltetracarboxylic dianhydride as a raw material, it is possible to produce polyimide or polyamic acid having an increased molecular weight.
    Type: Application
    Filed: April 10, 2008
    Publication date: September 4, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroshi Mikami, Takeshi Sano, Makoto Nitta
  • Publication number: 20080063849
    Abstract: To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained. A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarboxylic acid dianhydride, characterized in that the heating is carried out at a pressure of from 1×102 Pa to 1.1×105 Pa to a maximum temperature in a range of from 210° C. to 250° C. in such a manner that the temperature rising rate is higher than 50° C./hr for a period of at least ¼0 of the time for the temperature rise from 60° C. to 210° C., and the temperature is maintained to be from 150° C. to 250° C. for from 0.5 to 10 hours.
    Type: Application
    Filed: June 28, 2005
    Publication date: March 13, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroshi Mikami, Makoto Nitta, Naoki Noguchi
  • Publication number: 20080009604
    Abstract: A peptide component (A) represented by the following formula (1a) with a peptide component (B) represented by the following formula (2a) and a compound (C) represented by the following formula (3a), as an optional component are subjected to a condensation reaction in the presence of a dehydrating and condensing agent and a condensing auxiliary; provided that in the case where “X” represents HOOC—(CH2)m—CO— in the formula (1a) and/or (2a), the reaction is conducted with the compound (C). The ratio of the peptide component (A) relative to the peptide component (B) is 100/0 to 30/70 (mol %), and the ratio of the compound (C) relative to the total molar amount of the peptide component (A) and/or the peptide component (B).
    Type: Application
    Filed: July 26, 2007
    Publication date: January 10, 2008
    Inventors: Masao Tanihara, Chikara Otsuki, Hiroshi Mikami, Hisao Kinoshita
  • Publication number: 20070207180
    Abstract: The present invention provides a bioapplicable material (or composition) or film-forming material (or composition), which is free from a risk of an infection by a pathogenic organism or a transmission of a causative factor, has a high safety. The material (or composition) comprises a collagen-like synthetic polypeptide having at least an amino acid sequence represented by the formula -Pro-Y-Gly- (wherein Y represents Pro or Hyp). The polypeptide may show positive Cotton effect at a wavelength in range of 220 to 230 nm and negative Cotton effect at a wavelength in range of 195 to 205 nm in a circular dichroism spectrum. At least part of the polypeptide may be capable of forming a triple helical structure. The polypeptide may be degradable with a collagenase.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 6, 2007
    Inventors: Masao Tanihara, Chikara Otsuki, Hiroshi Mikami, Hisao Kinoshita
  • Patent number: 7262275
    Abstract: The invention provides for a polypeptide, which is useful as a biomaterial and free from infection. The polypeptide comprises a peptide unit of formula (1), and optionally one or more units of formulae (2) to (3): (1) [—(OC—(CH2)m—CO)p-(Pro-Y-Gly)n-]a; (2) [—(OC—(CH2)m—CO)q-(Z)r-]b; and (3) [—HN—R—NH—]c, wherein “m” is 1-18 , “p” and “q” are identical or different, and each is 0 or 1 , “Y” is Pro or Hyp, and “n”1-20 ; “Z” is a peptide chain comprising 1-10 amino acids, “r”1-20 , and “R” is a linear or branched alkylene group; the molar ratio of “a” to “b”[a/b] is 100/0 to 30/70 ; when p=1 and q=0, c=a, when p=0 and q=1, c=b, when p=1 and q=1, c=a+b, and when p=0 and q=0, c=0; and the polypeptide shows a peak of molecular weight in a range from 1×104 to 100×104 in the molecular weight distribution.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: August 28, 2007
    Assignee: PHG Corporation
    Inventors: Masao Tanihara, Chikara Otsuki, Hiroshi Mikami, Hisao Kinoshita
  • Publication number: 20060197503
    Abstract: A microcomputer 23 monitors a dischargeable capacity corresponding to a value by subtracting a capacity not to be discharged caused by an internal resistance of a battery from a charge capacity of the battery 13 based on outputs of a current sensor 15 and a voltage sensor 17.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 7, 2006
    Applicant: YAZAKI CORPORATION
    Inventors: Youichi Arai, Hiroshi Mikami
  • Patent number: 7096018
    Abstract: In a group communication system, a mobile station that is not currently under a group communication can participate in a group communication. A location registration signal is transmitted to a base station upon turning on the power of a mobile station or when a mobile station moves between communication zones A group communication number is sent from the mobile station and is examined against a group-communication group number controlling register in a control station The examination determines the presence or absence of a group communication call corresponding to the group-communication number sent by the mobile station Notification information on a relevant call, if present, is sent to the mobile station, which can then participate in the group communication.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: August 22, 2006
    Assignee: NEC Corporation
    Inventor: Hiroshi Mikami
  • Publication number: 20040199010
    Abstract: There is provided biphenyltetracarboxylic dianhydride containing biphenyltetracarboxylic monoanhydride in an amount of not more than 0.4%. By using the biphenyltetracarboxylic dianhydride as a raw material, it is possible to produce polyimide or polyamic acid having an increased molecular weight.
    Type: Application
    Filed: April 27, 2004
    Publication date: October 7, 2004
    Inventors: Hiroshi Mikami, Takeshi Sano, Makoto Nitta
  • Publication number: 20040028019
    Abstract: In a group communication system, it makes possible for a mobile station, that is not under a group communication, to participate in the group communication. Where a location registration signal is transmitted to a base station 3-5 upon turning on power of a mobile station or a mobile station in communication over a plurality of zones entered a group-communication objective wireless zone due to hand-over or the like, providing a group communication number for the mobile station to an information element of the location registration signal transmitted to the base station 3-5, further retrieving the group communication number by a group-communication group number controlling register in a control station, examining the presence or absence of a group communication call of the mobile station, notifying information on a relevant call, if present, to the mobile station to participate in the group communication in the course thereof.
    Type: Application
    Filed: July 28, 2003
    Publication date: February 12, 2004
    Applicant: NEC CORPORATION
    Inventor: Hiroshi Mikami
  • Patent number: 6653410
    Abstract: Disclosed is a treating method of a resin composition comprising: kneading a resin composition comprising a thermoplastic resin, 0 to 0.7 part by weight, based on 1 part by weight of the thermoplastic resin, of a treating agent having a capacity of hydrogenating a halogen and a halide, at 280 to 450° C., in the presence of a metal compound which combines with a halogen atom to generate a metal halide compound having a boiling point or sublimation point not greater than 450° C. at atmospheric pressure, to thereby convert the halide into a metal halide; and separating and collecting, from the resin composition, each of a mixture of the thermoplastic resin and the treating agent having a capacity of hydrogenating a halogen, and the metal halide. This makes it possible to treat a waste without conducting gasification or liquefaction of a resin by combustion or thermal decomposition, thereby removing and collecting the halogen such as bromine and the metal oxide therefrom in a high yield in a short time.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: November 25, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Takeshi Fujisawa, Yoshiyuki Arai, Hiroshi Mikami
  • Publication number: 20030162941
    Abstract: A peptide component (A) represented by the following formula (1a) with a peptide component (B) represented by the following formula (2a) and a compound (C) represented by the following formula (3a), as an optional component are subjected to a condensation reaction in the presence of a dehydrating and condensing agent and a condensing auxiliary; provided that in the case where “X” represents HOOC—(CH2)m—CO— in the formula (1a) and/or (2a), the reaction is conducted with the compound (C). The ratio of the peptide component (A) relative to the peptide component (B) is 100/0 to 30/70 (mol %), and the ratio of the compound (C) relative to the total molar amount of the peptide component (A) and/or the peptide component (B).
    Type: Application
    Filed: February 26, 2003
    Publication date: August 28, 2003
    Inventors: Masao Tanihara, Chikara Otsuki, Hiroshi Mikami, Hisao Kinoshita
  • Patent number: 6445687
    Abstract: A group communication system is disclosed, that comprises at least one controlling station, at least one base station connected to the controlling station through a wired circuit or a radio circuit, and a plurality of mobile stations connected to the base station, wherein the controlling station or the base station has a means for managing group communication numbers of the mobile stations, wherein the mobile stations each have a means for transmitting a mobile station identification number and a group communication number to the base station when a radio zone of each of the mobile stations is handed over and thereby a location registration operation is performed, wherein the controlling station or the base station has a zone area presence determining means for determining whether or not a particular mobile station is present in a radio zone to which the particular mobile station has been handed over when the controlling station or the base station receives the group communication number from the relevant mob
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: September 3, 2002
    Assignee: NEC Corporation
    Inventor: Hiroshi Mikami
  • Patent number: 6294568
    Abstract: The present invention provides compounds represented by the general formula (I): and a salt thereof, and anti-inflammatory agents and antitumor agents containing the compounds as the active ingredients.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: September 25, 2001
    Assignee: Nissin Food Products Co., Ltd.
    Inventors: Toshihiro Yamada, Yoichi Nobuhara, Kazuhiro Kobayashi, Satoshi Hirano, Takanobu Sakurai, Hiroshi Mikami, Ayako Miyake
  • Patent number: 5859092
    Abstract: A recording liquid containing an aqueous medium, a pigment and a polymer, wherein the polymer comprises at least one polymer containing a repeating unit A having at least one of a carboxyl group and an acid anhydride group and an allylether unit B of the formula (I), ##STR1## wherein R.sub.1 and R.sub.2 are a hydrogen atom or a substituted or unsubstituted C.sub.1 -C.sub.5 alkyl group, R.sub.3 is a hydrogen atom, an alkyl group, an alkylcarbonyl group, an alkenyl group, an alkenylcarbonyl group, an aryl group, an arylcarbonyl group, an aralkyl group, an aralkylcarbonyl group, a cycloalkyl group, a cycloalkylcarbonyl group, a heterocyclic group or a carbonyl group having a heterocyclic group, and these groups other than a hydrogen atom may have a substituent, and n is from 1 to 50.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: January 12, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takashi Hirasa, Hiroshi Takimoto, Yukichi Murata, Hiroshi Mikami, Shoji Toki
  • Patent number: 5814220
    Abstract: A process for the production of a blood separating agent is disclosed which comprises supplying a mixture solution containing (a) a separation layer forming high molecular weight compound as the main component and (b) a thixotropy-providing agent selected from the group consisting of inorganic fine particles and organic gelling agents into a cylinder block of a homogenizer having the cylinder block equipped with a plunger capable of performing reciprocating movement and a valve body which is connected thereto and equipped with a valve member, a valve sheet and an impact ring, and applying a compressive shearing stress to the mixture in said homogenizer at such a temperature that viscosity of the solution becomes 1.times.10.sup.4 centipoises or less, thereby obtaining a blood separating agent in the form of a dispersion or a uniform gel. A blood separating agent having excellent storage stability can be obtained with improved productivity per unit time.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: September 29, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroshi Mikami, Kenshin Nakahara, Mariko Kimura, Toshikazu Ishii
  • Patent number: 5557822
    Abstract: An electric vacuum cleaner having a suction nozzle comprising a dust inlet formed in a bottom surface of a nozzle body and a rotary brush rotatably mounted therein along said dust inlet, wherein said electric vacuum cleaner having either or both of configurations that said nozzle body has a flexible member mounted to a front wall thereof to rotate back and forth corresponding to the backward and forward movement of said nozzle body so that the flexible member comes in contact with a floor to cover a lower portion of said front wall, and that said nozzle body has a sliding piece slidably mounted on at least one of side walls thereof to open and close the side face corresponding to the backward and forward movement of said nozzle body.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: September 24, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mikio Yagi, Hiroshi Mikami, Taichi Tamura
  • Patent number: 5301307
    Abstract: A microprocessor capable of executing a micro-instruction output from a micro-memory according to an address which corresponds to an instruction to be executed at a time when each time the microprocessor receives the address is provided. The microprocessor includes a unit (a T1 cycle signal generator, a T2 cycle signal generator, a TW cycle signal generator) for generating a control signal for a period of time corresponding to a period of time of a waiting signal at a time when the waiting signal is received from the outside, and a unit (a microcode read-only memory, a read-only memory address latch, a read-only memory output latch, an address control circuit, a multiplexer) connected to the control signal generating unit (the T1 cycle signal generator, the T2 cycle signal generator, the TW cycle signal generator) for holding an address supplied to the micro-memory for a period of time corresponding to a period of time of the control signal.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 5, 1994
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Fumio Murooka, Yuusuke Kajikawa, Kazuharu Date, Hiroshi Mikami, Shigeki Imai, Katsuhiro Masui