Patents by Inventor Yasuhiro Kitahara
Yasuhiro Kitahara 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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Publication number: 20240138487Abstract: A power supply unit of an aerosol generating device, includes: a power supply; a positive electrode-side discharge terminal and a negative electrode-side discharge terminal to which a load configured to generate aerosol from an aerosol source by consuming electric power supplied from the power supply or a coil configured to transmit electric power to the load by electromagnetic induction is connected; and a circuit substrate including a first surface on which the positive electrode-side discharge terminal is mounted and a second surface which is a back surface of the first surface and on which the negative electrode-side discharge terminal is mounted.Type: ApplicationFiled: January 5, 2024Publication date: May 2, 2024Applicant: JAPAN TOBACCO INC.Inventors: Minoru KITAHARA, Shujiro TANAKA, Yasuhiro ONO
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Publication number: 20240138488Abstract: A power supply unit of an aerosol generating device includes: a power supply; a connector to which a load configured to generate aerosol from an aerosol source by consuming electric power supplied from the power supply, or a coil configured to transmit electric power to the load by electromagnetic induction is connected; a voltage converter that has an input terminal connected to the power supply and an output terminal connected to the connector; a first capacitor and a second capacitor connected between the output terminal of the voltage converter and the connector; and a circuit substrate on which the voltage converter, the first capacitor, and the second capacitor are mounted. The first capacitor and the second capacitor are not arranged in a line in a length direction or a width direction of the circuit substrate.Type: ApplicationFiled: January 5, 2024Publication date: May 2, 2024Applicant: JAPAN TOBACCO INC.Inventors: Minoru KITAHARA, Shujiro TANAKA, Yasuhiro ONO
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Publication number: 20240138026Abstract: A power supply unit of an aerosol generating device includes: a power supply; a positive electrode-side connector and a negative electrode-side connector to which a load configured to generate aerosol from an aerosol source by consuming electric power supplied from the power supply, or a coil configured to transmit electric power to the load by electromagnetic induction is connected; a first conductive pattern connecting the power supply and the positive electrode-side connector; a second conductive pattern branched from the first conductive pattern; a circuit substrate on which the first conductive pattern and the second conductive pattern are formed; and a first protection component having one end connected to the second conductive pattern and configured to protect an electronic component mounted on the circuit substrate from noise entering through the positive electrode-side connector.Type: ApplicationFiled: January 5, 2024Publication date: April 25, 2024Applicant: JAPAN TOBACCO INC.Inventors: Minoru KITAHARA, Shujiro TANAKA, Yasuhiro ONO
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Patent number: 8735499Abstract: The propylene-based polymer composition includes a specific amount of a propylene-based polymer (A) having a syndiotactic pentad fraction (rrrr fraction) of 85% or more and containing 90 to 100 mol % of a structural unit derived from propylene; a specific amount of a propylene-based copolymer (B) containing 40 to 89 mol % of a structural unit derived from propylene and 11 to 60 mol % of a structural unit derived from an ?-olefin and satisfying a specific equation of intrinsic viscosity [?] and MFR; and specific amount(s) of at least one polymer of an olefin-based thermoplastic elastomer (C), a styrene-based elastomer (D), a propylene/ethylene/?-olefin copolymer (E) and an isotactic propylene-based polymer (F), and optionally an ethylene/vinyl acetate copolymer (G) and/or an ethylene-based polymer (H).Type: GrantFiled: June 28, 2012Date of Patent: May 27, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Naomi Urakawa, Makoto Nakano, Yasuhiro Kitahara, Ryosuke Aburaki, Akihiro Matsuda
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Publication number: 20130137826Abstract: The propylene-based polymer composition includes a specific amount of a propylene-based polymer (A) having a syndiotactic pentad fraction (rrrr fraction) of 85% or more and containing 90 to 100 mol % of a structural unit derived from propylene; a specific amount of a propylene-based copolymer (B) containing 40 to 89 mol % of a structural unit derived from propylene and 11 to 60 mol % of a structural unit derived from an ?-olefin and satisfying a specific equation of intrinsic viscosity [?] and MFR; and specific amount(s) of at least one polymer of an olefin-based thermoplastic elastomer (C), a styrene-based elastomer (D), a propylene/ethylene/?-olefin copolymer (E) and an isotactic propylene-based polymer (F), and optionally an ethylene/vinyl acetate copolymer (G) and/or an ethylene-based polymer (H).Type: ApplicationFiled: June 28, 2012Publication date: May 30, 2013Inventors: Naomi URAKAWA, Makoto Nakano, Yasuhiro Kitahara, Ryosuke Aburaki, Akihiro Matsuda
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Patent number: 6984443Abstract: The invention provides an aliphatic polyester resin composition that contains 100 parts by weight of an aliphatic polyester resin and from 10 to 60 parts by weight of at least one compound of a formula (1): wherein n indicates an integer of from 1 to 9, R1 to R4 each independently represent an alkyl group having from 1 to 17 carbon atoms, and when n is 2 or more, R3 may differ in different units, a film formed of the composition, and packages with the film. The aliphatic polyester film of the invention keeps the degradability in the natural environment that is intrinsic to lactic acid-based polymer, and has good heat resistance, flexibility, transparency and adhesiveness, and, in addition, the plasticizer does not migrate to the surface of the film.Type: GrantFiled: July 9, 2002Date of Patent: January 10, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Takayuki Kuroki, Takayuki Watanabe, Yasuhiro Kitahara, Akinori Takehara, Shoji Obuchi
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Patent number: 6756331Abstract: A lactic acid-based resin composition containing a mixture of (A) a mixture of (a1) polylactic acid and (a2) an aliphatic polyester, and (B) an aliphatic block co-polyester having a polylactic acid segment and an aliphatic polyester segment, wherein the aliphatic block co-polyester (B): (1) contains a lactic acid component in an amount of from 20 to 80 wt % in terms of monomer, (2) has a weight average molecular weight of 1,000 or more and less than 60,000, and (3) has a weight average molecular weight of the polylactic acid segment of from 500 to 55,000 and a weight average molecular weight of the aliphatic polyester segment of from 500 to 55,000. A molded article formed from the composition can be a film, a sheet, a filament.Type: GrantFiled: March 12, 2002Date of Patent: June 29, 2004Assignee: Mitsui Chemicals, Inc.Inventors: Tomoyuki Kasemura, Shinya Takahashi, Naoto Kuriyama, Shoji Obuchi, Takayuki Watanabe, Yasuhiro Kitahara
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Publication number: 20040010063Abstract: The invention provides an aliphatic polyester resin composition that contains 100 parts by weight of an aliphatic polyester resin and from 10 to 60 parts by weight of at least one compound of a formula (1): 1Type: ApplicationFiled: March 11, 2003Publication date: January 15, 2004Inventors: Takayuki Kuroki, Takayuki Watanabe, Yasuhiro Kitahara, Akinori Takehara, Shoji Obuchi
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Publication number: 20020198332Abstract: The present invention provides a lactic acid-based resin composition comprising a mixture of (A) a mixture of (a1) polylactic acid and (a2) an aliphatic polyester, and (B) an aliphatic block co-polyester having a polylactic acid segment and an aliphatic polyester segment, wherein the aliphatic block co-polyester (B): (1) contains a lactic acid component in an amount of from 20 to 80 wt % in terms of monomer, (2) has a weight average molecular weight of 1,000 or more and less than 60,000, and (3) has a weight average molecular weight of the polylactic acid segment of from 500 to 55,000 and a weight average molecular weight of the aliphatic polyester segment of from 500 to 55,000. The lactic acid-based resin composition of the invention has transparency and flexibility because the respective compositional resins are effectively dispersed.Type: ApplicationFiled: March 12, 2002Publication date: December 26, 2002Inventors: Tomoyuki Kasemura, Shinya Takahashi, Naoto Kuriyama, Shoji Obuchi, Takayuki Watanabe, Yasuhiro Kitahara
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Patent number: 6417294Abstract: An aliphatic polyester formed item having transparency and crystallinity in combination by crystallizing, in the course of or after processing, an aliphatic polyester composition comprising aliphatic polyester and one or more transparent nucleating agent selected from the group consisting of aliphatic carboxylic acid amide, aliphatic carboxylic acid salt, aliphatic alcohol and aliphatic carboxylic acid ester having a melting point of 40-300° C.Type: GrantFiled: December 17, 1996Date of Patent: July 9, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Shoji Obuchi, Tatsuya Kawaguchi, Tomoyuki Nakata, Takayuki Watanabe, Yasuhiro Kitahara, Kazuhiko Suzuki, Masanobu Ajioka
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Publication number: 20020002252Abstract: The invention provides an aliphatic polyester formed item having transparency and crystallinity in combination by crystallizing, in the course of or after processing, an aliphatic polyester composition comprising aliphatic polyester and one or more transparent nucleating agent selected from the group consisting of aliphatic carboxylic acid amide, aliphatic carboxylic acid salt, aliphatic alcohol and aliphatic carboxylic acid ester having a melting point of 40-300° C.Type: ApplicationFiled: January 23, 2001Publication date: January 3, 2002Inventors: Shoji Obuchi, Tatsuya Kawaguchi, Tomoyuki Nakata, Takayuki Watanabe, Yasuhiro Kitahara, Kazuhiko Suzuki, Masanobu Ajioka
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Patent number: 6290896Abstract: A formed product which has a thickness of 0.1˜2 mm and a haze of 5%/2 mm or less and is degraded with ease in the natural environment is obtained by holding a transparent L-lactic acid base polymer sheet having an L-lactic acid proportion of 75% or more and a thickness of 0.2˜2 mm under conditions where: (1) a holding temperature is in the range of 55˜90° C., (2) a holding time m1 (min) satisfies the formula: log10m1<−0.083 T1+7.66, forming said sheet by adhering to the internal surface of a mold through vacuum suction, compressed air pressure or vacuum/air pressure under a condition where: (3) a mold temperature T2 is set in the range of from the glass transition temperature Tg of the L-lactic acid base polymer to the holding temperature T1, and taking out the formed product from the mold after reducing an internal temperature of the mold to less than Tg.Type: GrantFiled: May 18, 1995Date of Patent: September 18, 2001Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka
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Patent number: 6235825Abstract: A polylactic acid-based resin composition composed of a high molecular ingredient (A) comprising polylactic acid (a1) and an aliphatic polyester (B), and a film, particularly an inflation film, prepared from the resin composition. The film comprising the polylactic acid-based resin composition of the invention is biodegradable and excellent in flexibility and resistance to blocking of film and bleeding-out of plasticizer, has no anisotropy in tear strength, and can be suitably used for an agricultural multi-film and garbage bag. When the film of the invention is used for food wrapping, the film prevents fungus growth and contamination of color or odor, and thus can be suitably used.Type: GrantFiled: October 14, 1999Date of Patent: May 22, 2001Assignee: Mitsui Chemicals, Inc.Inventors: Yasunori Yoshida, Shoji Obuchi, Yasuhiro Kitahara, Takayuki Watanabe, Hisashi Aihara, Tomoyuki Nakata, Kazuhiko Suzuki, Masanobu Ajioka
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Patent number: 6136905Abstract: A lactic acid polymer composition comprising formulating 100 parts by weight of a mixture consisting of 80-95% by weight of an L-lactic acid polymer having an L-lactic acid proportion of 75% or more and 5-20% by weight of a plasticizer selected from the group consisting of a polyhydric alcohol ester and a hydroxypolycarboxylic acid ester, 0.1-5 parts by weight of an anti-blocking agent having a SiO.sub.2 content of 90% or more and an average particle size of 7-50 nm, and 0.1-2 parts by weight of a slip agent; a molded product and film obtained from the composition; and a preparation process of the same are disclosed. The molded product and film are excellent in processability, transparency, flexibility, anti-blocking property and slip, and can be degraded into harmless water and carbon dioxide under natural environment, when abandoned.Type: GrantFiled: December 22, 1997Date of Patent: October 24, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka, Shuhei Ikado
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Patent number: 5916950Abstract: A thermal resistant resin composition comprising 100 parts by weight of polyester (A) having 25-75% by weight of a lactic acid component consisting of 25-75% by weight of a lactic acid-based polymer (a1) and 25-75% by weight of other aliphatic polyester (a2) having a melting point of 100-250.degree. C., and 0.1-70 parts by weight of a crystalline inorganic filler (B) containing 10% by weight or more of SiO.sub.2. The thermal resistant resin composition of the invention performs following function:1) injection molding can be carried out at a mold temperature of Tg or less or around room temperature with a short molding-cycle,2) quick crystallization velocity and satisfactory crystallinity can be attained in the molding step, and3) the molded articles have, as a result, excellent thermal resistance and generate properties of low deterioration of a high polymer component and slow embrittlement in use.Type: GrantFiled: July 17, 1997Date of Patent: June 29, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Shoji Obuchi, Takayuki Watanabe, Yasuhiro Kitahara, Tomoyuki Nakata, Kazuhiko Suzuki, Masanobu Ajioka
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Patent number: 5763513Abstract: A lactic acid polymer composition comprising formulating 100 parts by weight of a mixture consisting of 80-95% by weight of an L-lactic acid polymer having an L-lactic acid proportion of 75% or more and 5-20% by weight of a plasticizer selected from the group consisting of a polyhydric alcohol ester and a hydroxypolycarboxylic acid ester, 0.1-5 parts by weight of an anti-bloking agent having a SiO.sub.2 content of 90% or more and an average particle size of 7-50 nm, and 0.1-2 parts by weight of a slip agent; a molded product and film obtained from the composition; and a preparation process of the same are disclosed. The molded product and film are excellent in processability, transparency, flexibility, anti-blocking property and slip, and can be degraded into harmless water and carbon dioxide under natural environment, when abandoned.Type: GrantFiled: May 4, 1995Date of Patent: June 9, 1998Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka, Shuhei Ikado
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Patent number: 5691424Abstract: A preparation process of heat-resistant molded articles of a lactic acid-based polymer comprising mixing the lactic acid-based polymer and poly-.epsilon.-caprolactone so as to obtain a L-lactic acid ratio of 75% by weight or more, adding to the polymer mixture a crystalline inorganic powder containing 50% by weight or more of SiO.sub.2, melt-kneading the resultant composition, filling the same into a mold which is set at 85.degree..about.125.degree. C. and forming a shape while promoting crystallization. The molded articles have excellent heat resistance and impact strength, are suitably used for food trays and beverage cups, and can be degraded, in the case of waste, into nontoxic water and carbon dioxide like natural products within a relatively short period in the natural environment.Type: GrantFiled: May 25, 1995Date of Patent: November 25, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka
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Patent number: 5447962Abstract: Foams comprising innumerable cells dispersed in thermoplastic polymer compositions substantially consisting of polylactic acid or a copolymer of lactic acid and hydroxycarboxylic acid and having degradable characteristics in the natural environment.The foams can be used for containers such as food trays and throw away cups comprising molded sheet foam of a thermoplastic and degradable polymer or heat insulating materials and cushioning materials comprising bulk foam.Type: GrantFiled: January 27, 1994Date of Patent: September 5, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masanobu Ajioka, Katashi Enomoto, Akihiro Yamaguchi, Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara
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Patent number: 5409751Abstract: A degradable container which is excellent in transparency and impact strength and can be decomposed into nontoxic water and carbon dioxide in the natural environment within a relatively short period can be obtained by using the process for molding a container of an arbitrary shape from a thermoplastic composition having polylactic acid of lactic acids or a copolymer of lactic acids and other hydroxycarboxylic acids as a main component, preforming the composition and thereafter molding the container in a temperature range from Tg to Tg+60.degree. C. on the basis of the glass transition temperature Tg of the thermoplastic polymer composition and under the condition of a draw ratio of 6 times or less.Type: GrantFiled: March 17, 1993Date of Patent: April 25, 1995Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Kazuhiko Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka
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Patent number: 5294469Abstract: A thermoplastic polymer composition primarily comprising polylactic acid or a copolymer of lactic acids and the other hydroxycarboxylic acids than lactic acids, industrial fabrics which can be degraded into nontoxic water and carbon dioxide within a relatively short period under the natural environment, and flexible containers, water shielding sheets and resin coated-cloth ventilation tubes which are prepared from the industrial fabrics.Type: GrantFiled: June 16, 1993Date of Patent: March 15, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Kazuhika Suzuki, Takayuki Watanabe, Yasuhiro Kitahara, Masanobu Ajioka