Patents by Inventor Katsuhiro Yamanaka

Katsuhiro Yamanaka 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).

  • Publication number: 20190388544
    Abstract: The object of the present invention is to provide a composition for a non-aqueous patch preparation with excellent adhesibility which can sustainedly release a drug. The patch preparation of the present invention can improve the adhesibility of the patch preparation and the release property of a drug by the addition of a powder ingredient (a filler or the like). As a result, the long-time sustention of the adhesibility of tape preparations enables an improvement of the transdermal absorbability and the sustained release of a drug. By the use of a composition for a patch preparation comprising this powder ingredient, a drug, regardless of the type of a drug is dissolved in an organic solvent or an ionic liquid to prepare a drug solution comprising the organic solvent, the drug solution is incorporated into the non-aqueous patch preparation of the present invention, and thereby a preparation with the improved transdermal absorbability and the improved sustained release can prepared.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Applicant: MEDRX CO., LTD.
    Inventors: Hidetoshi Hamamoto, Katsuhiro Yamanaka, Takahiro Tanimoto
  • Patent number: 10494522
    Abstract: A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1): wherein, in the formula (1), each of R1 and R2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom, (B) constituent units each represented by the following formula (2): wherein, in the formula (2), each of R3 and R4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and (C) constituent units each represented by the following formula (3): wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: December 3, 2019
    Assignee: TEIJIN LIMITED
    Inventors: Hideyuki Tsunemori, Katsuhiro Yamanaka
  • Patent number: 10494506
    Abstract: Provided is a flame-retardant polyolefin resin composition, which contains 1 to 100 parts by weight of an organic phosphorus compound (component B) represented by the following formula (1) per 100 parts by weight of the polyolefin resin (component A), realizing high flame retardancy, high heat resistance and excellent physical properties. wherein X1 and X2, which may be the same or different, are aromatic-substituted alkyl groups, represented by the following formula (2): ALAr)n??(2) wherein AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, a naphthyl group, or an anthryl group optionally having a substituent in an aromatic ring, n represents an integer of 1 to 3, and Ar can be bonded to any carbon atom in AL.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: December 3, 2019
    Assignee: TEIJIN LIMITED
    Inventors: Katsuhiro Yamanaka, Tsuyoshi Takeda
  • Publication number: 20190352502
    Abstract: A multilayer body includes at least one layer (C) including a resin composition; and at least one layer (D) including a thermoplastic resin, in which the resin composition includes a polycarbonate resin (A) and an acrylic resin (B) in a weight ratio of 40:60 to 99:1, the polycarbonate resin (A) includes, as main repeating units, a unit (a-1) represented by the following formula (a-1): and a unit (a-2) represented by the following formula (a-2): wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 6 to 20 carbon atoms and optionally having a substituent, and m represents an integer of 0 to 10, and the molar ratio of the unit (a-1) and the unit (a-2) (a-1/a-2) is 40/60 to 95/5. The multilayer body has excellent transparency, chemical resistance, surface hardness, and adhesion.
    Type: Application
    Filed: January 30, 2018
    Publication date: November 21, 2019
    Applicant: TEIJIN LIMITED
    Inventors: Kenta IMAZATO, Shoichi MAEKAWA, Katsuhiro YAMANAKA
  • Publication number: 20190218237
    Abstract: An organic phosphorus-based compound which satisfies the following requirements (i) to (viii) and is represented by the following formula (1): (i) the organic purity should be not lower than 98%; (ii) the solubility in 20° C. water should be not higher than 0.1 g/100 g of water; (iii) the total halogen component content should be not higher than 1,000 ppm; (iv) the total volatile organic matter content should be not higher than 800 ppm; (v) the ? pH value should be not larger than 1.0; (vi) the volume standard median diameter should be not larger than 30 ?m; (vii) the maximum particle diameter should be not larger than 200 ?m; and (viii) the standard deviation represented by the following formula should be not larger than 20 ?m. Standard deviation=(d84%+d16%)/2; wherein d84%: particle diameter at a point where the cumulative curve becomes 84% (?m), and d16%: particle diameter at a point where the cumulative curve becomes 16% (?m).
    Type: Application
    Filed: March 10, 2017
    Publication date: July 18, 2019
    Applicant: TEIJIN LIMITED
    Inventors: Katsuhiro YAMANAKA, Kenta IMAZATO, Naoshi TAKAHASHI
  • Publication number: 20190175585
    Abstract: The present disclosure provides a patch preparation having features that prevent misuse. In some embodiments, a patch preparation containing a plaster on a support, wherein the plaster comprises a solvent that is a combination of ethyl acetate and n-heptane. The patch preparation can lose its adhesion after the plaster is exposed to air and at least some of the solvent has evaporated, or if the patch is removed from the skin. This feature prevent the used patch from being applied to the skin again, and can prevent misuse. A method of forming a patch preparation is also disclosed.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 13, 2019
    Inventors: Hidetoshi HAMAMOTO, Yasushi MIWA, Katsuhiro YAMANAKA, Noboru TATSUMI
  • Patent number: 10294351
    Abstract: A flameproofing agent for fibers which has high flameproofness and excellent physical properties (light resistance, heat resistance, texture), a process for manufacturing a flameproof fiber product and a flameproof fiber product. The flameproofing agent comprises an organic phosphorus compound (component A) represented by the following formula (1). (In the above formula, X1 and X2 are the same or different and each an aromatic substituted alkyl group represented by the following formula (2).) ALAr)n??(2) (In the above formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, naphthyl group or anthryl group all of which may have a substituent, “n” is an integer of 1 to 3, and Ar may be bonded to any carbon atom contained in AL.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: May 21, 2019
    Assignees: TEIJIN LIMITED, MARUBISHI OIL CHEMICAL CO., LTD.
    Inventors: Katsuhiro Yamanaka, Tsuyoshi Takeda, Kuniaki Kondo, Masaki Haruyoshi
  • Publication number: 20190010280
    Abstract: To provide a polycarbonate resin having an excellent hue and high heat stability, and a production method and a film thereof. The polycarbonate resin has a carbonate constituent unit represented by the following formula (A), wherein the resin contains a terminal group represented by the following formula (1) or (2) and 0.1 to 500 ppm of an aromatic monohydroxy compound. (In the formula (1), R1 is an alkyl group having 6 to 15 carbon atoms which may be substituted.) (In the formula (2), R2 and R3 are each independently an alkylene group having 1 to 12 carbon atoms which may be substituted. R4 is a hydrogen atom or alkyl group having 1 to 12 carbon atoms which may be substituted. n is an integer of 1 to 20.
    Type: Application
    Filed: December 27, 2016
    Publication date: January 10, 2019
    Applicant: TEIJIN LIMITED
    Inventors: Tetsuya MOTOYOSHI, Katsuhiro YAMANAKA
  • Patent number: 10150854
    Abstract: A polycarbonate resin composition comprising a polycarbonate resin and 0.001 to 1 parts by weight of an N—R type (R represents an alkyl group) hindered amine-based optical stabilizer per 100 parts by weight of the polycarbonate resin, wherein the polycarbonate resin comprises 40 mol % or more of a recurring unit (A) represented by the following formula, a metal compound comprising a negative ion represented by the following formula (B) and a positive ion constituted by a metal is used as a polymerization catalyst in an amount of 1×10?9 to 1×10?5 molar equivalent relative to the total diol compounds used for polymerization, and the resin composition has excellent heat resistance, a low water absorption coefficient and high transparency, and suppresses deterioration during long-term use, wherein R1 is an alkylene group, a cycloalkylene group, or an arylalkylene group which has 1 to 22 carbon atoms and may be linear or branched.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: December 11, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Takushi Tani, Hiroshi Okamoto, Katsuhiro Yamanaka
  • Patent number: 10138355
    Abstract: A flame retardant resin composition containing 1 to 100 parts by weight of (B) an organophosphorus compound (component B) represented by the following formula (1) per 100 parts by weight of (A) a resin component (component A) containing at least 60 wt % of an acrylic resin has high flame retardancy, high transparency and satisfactory physical properties: wherein X1 and X2 are the same or different, and represent alkyl groups substituted with aromatic groups represented by the following formula (2): ALAr)n??(2) wherein AL represents a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar represents a phenyl group, a naphthyl group, or an anthryl group each optionally substituted, n represents an integer of 1 to 3, and Ar can be bonded to any carbon atom in AL.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: November 27, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Katsuhiro Yamanaka, Tsuyoshi Takeda, Kenta Imazato
  • Publication number: 20180325837
    Abstract: The present invention provides a composition for a non-aqueous patch preparation having an excellent adhesibility which can sustainedly release a drug. The patch preparation of the present invention can improve the adhesibility thereof as well as the release property of a drug by the addition of powder ingredient (e.g. a filler). As a result, the long-time sustention of the adhesibility of patch preparations can achieve the improvement of the transdermal absorbability and the sustained release of a drug. By the use of a composition for a patch preparation comprising this powder ingredient, a drug, regardless of the type of a drug is dissolved in an organic solvent or an ionic liquid to prepare a drug solution comprising the organic solvent, the drug solution is incorporated into the non-aqueous patch preparation of the present invention, and thereby a preparation with the improved transdermal-absorbability and sustained release can prepared.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Applicant: MEDRX CO., LTD.
    Inventors: Hidetoshi Hamamoto, Katsuhiro Yamanaka, Takahiro Tanimoto
  • Publication number: 20180312688
    Abstract: A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1): wherein, in the formula (1), each of R1 and R2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom, (B) constituent units each represented by the following formula (2): wherein, in the formula (2), each of R3 and R4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and (C) constituent units each represented by the following formula (3): wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen
    Type: Application
    Filed: October 24, 2016
    Publication date: November 1, 2018
    Applicant: TEIJIN LIMITED
    Inventors: Hideyuki TSUNEMORI, Katsuhiro YAMANAKA
  • Publication number: 20180282540
    Abstract: Provided is a resin composition comprising: a polycarbonate resin (A) containing, as main repeating units, a unit (a-1) represented by the following formula (a-1) and a unit (a-2) represented by the following formula (a-2) (wherein, W represents a C1-20 alkylene group or a C6-20 cycloalkylene group, R represents a branched or linear-chain C1-20 alkyl group or a C6-20 cycloalkyl group optionally substituted, and m represents an integer of 0 to 10) and an acrylic resin (B), and the polycarbonate resin and the acrylic resin are in a weight ratio of 40:60 to 99:1, wherein the resin composition has a single glass transition temperature, which is in the range of 90° C. to 150° C., and the resin composition has excellent transparency, chemical resistance, surface hardness and heat resistance, and has a low photoelastic coefficient.
    Type: Application
    Filed: September 21, 2016
    Publication date: October 4, 2018
    Applicant: TEIJIN LIMITED
    Inventors: Kenta IMAZATO, Shoichi MAEKAWA, Katsuhiro YAMANAKA
  • Publication number: 20180256495
    Abstract: It has been demanded to develop a formulation for a novel external preparation having excellent transdermal absorption of a basic pharmacologically active component contained therein. It is found that the lipid solubility (log P values) of a basic pharmacologically active component and an organic acid (particularly a fatty acid) contribute significantly to the transdermal absorption of the basic pharmacologically active component in the selection of proper combinations of the basic pharmacologically active component and the organic acid. Namely, it is found that superior transdermal absorption of a basic pharmacologically active component having a lipid solubility level of 0.5 to 5 can be achieved by forming a salt of the component with a fatty acid having a lipid solubility level of ?1 to 4. Thus, it becomes possible to provide a novel external preparation having excellent transdermal absorption properties.
    Type: Application
    Filed: May 9, 2018
    Publication date: September 13, 2018
    Inventors: Noritaka Hanma, Masaki Ishibashi, Hidetoshi Hamamoto, Katsuhiro Yamanaka
  • Patent number: 10035336
    Abstract: Provided is a multilayer body excellent in terms of heat resistance, low water absorbency, shock resistance, surface hardness, and adhesion, including: at least one layer made of a polycarbonate resin (A) whose main repeating units include a unit (a-1) represented by the following formula: and a unit (a-2) represented by the following formula: (wherein R1, R2, R3, and R4 are each a hydrogen atom or a C1-5 monovalent alkyl group), the unit (a-1) and the unit (a-2) being in a molar ratio (a-1/a-2) of 32/68 to 70/30; and at least one layer made of an aromatic polycarbonate resin (B).
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 31, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Kenta Imazato, Katsuhiro Yamanaka
  • Patent number: 9980920
    Abstract: The present invention provides a composition for a non-aqueous patch preparation having an excellent adhesibility which can sustainedly release a drug. The patch preparation of the present invention can improve the adhesibility thereof as well as the release property of a drug by the addition of powder ingredient (e.g. a filler). As a result, the long-time sustention of the adhesibility of patch preparations can achieve the improvement of the transdermal absorbability and the sustained release of a drug. By the use of a composition for a patch preparation comprising this powder ingredient, a drug, regardless of the type of a drug is dissolved in an organic solvent or an ionic liquid to prepare a drug solution comprising the organic solvent, the drug solution is incorporated into the non-aqueous patch preparation of the present invention, and thereby a preparation with the improved transdermal-absorbability and sustained release can prepared.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: May 29, 2018
    Assignee: MEDRx Co., Ltd.
    Inventors: Hidetoshi Hamamoto, Katsuhiro Yamanaka, Takahiro Tanimoto
  • Patent number: 9920472
    Abstract: Flame retardant synthetic leather having high flame retardancy and excellent physical properties (light resistance, heat resistance and feeling). The flame retardant synthetic leather contains an organic phosphorus compound (component A) represented by the following formula (1). (In the formula, X1 and X2 are the same or different and each an aromatic substituted alkyl group represented by the following formula (2).) AL(Ar)n??(2) (In the formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, and Ar is a phenyl group, naphthyl group or anthryl group, all of which may have a substituent. “n” is an integer of 1 to 3, and Ar may be bonded to any carbon atom contained in AL.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 20, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Katsuhiro Yamanaka, Tsuyoshi Takeda, Kuniaki Kondo, Masaki Haruyoshi
  • Publication number: 20180022880
    Abstract: A film having high transparency, weather resistance, moist heat resistance, excellent tensile characteristics, a good hue and high surface hardness. The film comprises: (a) 100 parts by weight of a polycarbonate resin (component a) containing a carbonate unit (A) represented by the following formula (A) and having a specific viscosity measured from a 20° C. methylene chloride solution of 0.2 to 0.5; (b) 0.03 to 2.5 parts by weight of at least one ultraviolet absorbent (component b) selected from the group consisting of an ultraviolet absorbent having a benzotriazole skeleton and an ultraviolet absorbent having a triazine skeleton; (c) 0.0001 to 0.02 part by weight of a coloring agent (component c); and (d) 0.
    Type: Application
    Filed: March 14, 2016
    Publication date: January 25, 2018
    Applicant: TEIJIN LIMITED
    Inventors: Naoshi TAKAHASHI, Tetsuya MOTOYOSHI, Kenta IMAZATO, Toshiyuki SHIMIZU, Shoichi MAEKAWA, Katsuhiro YAMANAKA
  • Publication number: 20180015037
    Abstract: The purpose of the present invention is to provide an aqueous preparation for external use, said aqueous preparation comprising an acidic drug such as an arylacetic acid nonsteroidal anti-inflammatory analgesic, having an excellent percutaneous absorbability and giving a good feeling in use. The aqueous preparation for external use comprises the acidic drug or a salt thereof, isostearic acid and an alkanol amine. It is preferred that the aqueous preparation according to the present invention for external use further comprises a C2-6 aliphatic hydroxy acid and has a pH value of 4.5-7.8. The C2-6 aliphatic hydroxy acid is one member or a combination of the same selected from the group consisting of lactic acid, glycolic acid, malic acid, tartaric acid and citric acid.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 18, 2018
    Applicant: MEDRx Co., Ltd.
    Inventor: Katsuhiro Yamanaka
  • Publication number: 20180009967
    Abstract: A flame retardant resin composition containing 1 to 100 parts by weight of (B) an organophosphorus compound (component B) represented by the following formula (1) per 100 parts by weight of (A) a resin component (component A) containing at least 60 wt % of an acrylic resin has high flame retardancy, high transparency and satisfactory physical properties: wherein X1 and X2 are the same or different, and represent alkyl groups substituted with aromatic groups represented by the following formula (2): ?AL??Ar?n??(2) wherein AL represents a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar represents a phenyl group, a naphthyl group, or an anthryl group each optionally substituted, n represents an integer of 1 to 3, and Ar can be bonded to any carbon atom in AL.
    Type: Application
    Filed: January 19, 2016
    Publication date: January 11, 2018
    Applicant: TEIJIN LIMITED
    Inventors: Katsuhiro YAMANAKA, Tsuyoshi TAKEDA, Kenta IMAZATO