Patents Assigned to Chisso Corporation
  • Intermediates and improved processes for the preparation of neplanocin A
    Patent number: 7053225
    Abstract: Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: May 30, 2006
    Assignee: Chisso Corporation
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Silsesquioxane derivative having functional group
    Patent number: 7053167
    Abstract: A conventional silsesquioxane derivative has the problems that the functional groups are restricted and the chemical structure is not readily controlled and that it is expensive. The present inventors have developed a process for producing a silsesquioxane derivative at a high yield by a simple process in order to solve such problems. The novel silsesquioxane derivative according to the present invention is controlled in a structure thereof and has a functional group, which is excellent in reactivity with a target compound, to be modified. The present invention relates to a production process for a silsesquioxane derivative represented by Formula (2), characterized by using a silicon compound represented by Formula (1).
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: May 30, 2006
    Assignee: Chisso Corporation
    Inventors: Kenya Ito, Mikio Yamahiro, Kenichi Watanabe
  • Pharmaceutical preparation for the treatment of gynecological diseases
    Patent number: 7041310
    Abstract: This invention provides to a novel pharmaceutical preparation for the treatment of gynecological diseases. The pharmaceutical preparation according to the invention comprises a therapeutic drug for the intrauterine, intravaginal or intrapelvic administration, or for the administration into the ovarian endometrioma, and a biodegradable polymer comprising a chemically modified hyaluronic acid or a salt thereof prepared by O-acylating, alkoxylating or crosslinking a complex of hyaluronic acid or a salt thereof and a cationic compound in a nonaqueous solvent. The preparation of the invention is preferably administered intrauterine, intravaginal, intrapelvic, and intratumor cavity.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: May 9, 2006
    Assignees: Chisso Corporation
    Inventors: Nobuhiko Yui, Kouichi Murakami, Tooru Ooya, Ikuo Sato
  • Filter cartridge
    Patent number: 7033497
    Abstract: A filter cartridge formed by winding, in a twill construction, a band-shaped unwoven cloth, which contains thermoplastic fibers and at least a part of its fiber intersections are stuck thereon, so that a cylindrical shape can be obtained, wherein 1. two types of filtrating layers are used, 2. unwoven cloth having opening hole parts is used, 3. an end face seal part is provided on both end parts of the cartridge, 4. unwoven cloth having a tongue piece part is used, or 5. two or more pieced of unwoven cloth are wound simultaneously, whereby those characteristic of the filter cartridge such as liquid permeability, filterable life, and stability of filtration accuracy can be kept in balance with each other.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: April 25, 2006
    Assignee: Chisso Corporation
    Inventors: Osamu Yamaguchi, Shigenori Fukuda, Hideo Nobuhara
  • Metallocene compounds, production process for olefin polymers using catalysts containing them and olefin polymers produced by the production process
    Patent number: 7019157
    Abstract: The present invention provides metallocene compounds which exhibit high polymerization activity for production of highly stereoregular polymers, as well as a production process for olefin polymers which employs olefin polymerization catalysts containing the compounds, and olefin polymers obtained by the production process.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: March 28, 2006
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Toshihiro Uwai, Masato Nakano, Tsutomu Ushioda, Masami Kimura, Tsuyoshi Yahata
  • Filter cartridge
    Patent number: 7014050
    Abstract: A filter cartridge comprising a strip, long fiber non-woven fabric which comprises a thermoplastic fiber and in which at least a part of fiber intersections is adhered, which is wound around a perforated cylinder in a twill form, has made it possible to obtain a cylindrical filter cartridge which is excellent in a liquid-passing property, a filter life and a stability in a filtering accuracy. The thermoplastic fiber constituting the above long fiber non-woven fabric is particularly preferably a thermally adhesive composite fiber comprising a low melting point resin and a high melting point resin and having a melting point difference of 10° C. or more between those of both resins.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: March 21, 2006
    Assignee: Chisso Corporation
    Inventors: Satoshi Ogata, Youzou Higuchi, Osamu Yamaguchi
  • Silsesquioxane derivative and process for producing the same
    Publication number: 20060052623
    Abstract: The PSQ silsesquioxane derivative of the invention is represented by Formula (1), and it may be utilized as additives to ordinary organic polymers for improving the flame retardancy, heat resistance, weather resistance, light resistance, electric insulating property, surface property, hardness, mechanical strength and chemical resistance thereof. In Formula (1), R is hydrogen, alkyl, aryl or arylalkyl; at least one Y is a group represented by Formula (2) and the other Y is hydrogen; in Formula (2), R1 and R2 are a group independently defined similarly to R; and Z is preferably a functional group, or a group having a functional group.
    Type: Application
    Filed: September 3, 2003
    Publication date: March 9, 2006
    Applicant: CHISSO CORPORATION
    Inventors: Kazuhiro Yoshida, Yoshitaka Morimoto, Kenichi Watanabe, Nobumasa Ootake
  • Pleated composite fiber net, and article formed from the same
    Publication number: 20060029778
    Abstract: A pleated composite fiber net formed of heat-adhesive composite fibers having a fineness of 200 to 2,500 dtex serving as warps and wefts in an opening size of strand of 0.5 to 5 mm, and heat-adhered at the intersections of said composite fibers; wherein the adhesive strength of the heat-adhered portions is 20 cN or higher.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 9, 2006
    Applicant: Chisso Corporation
    Inventors: Teruaki Sekiguchi, Akira Yamanaka
  • Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes
    Patent number: 6995279
    Abstract: Metallocene compounds represented by the following general formula (1): YqKLMX2??(1) wherein M, Y, q, L and X are each as defined in the Specification.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: February 7, 2006
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Tsutomu Ushioda, Masato Nakano, Toshihiro Uwai
  • Microorganism culture medium
    Publication number: 20060008867
    Abstract: A microorganism culture medium comprising a derivative A? of a chromogen A, and a chromogen B, where the chromogen A is a chromogen being oxidized to a colorant, and the chromogen B is a chromogen being reduced to a colorant. The derivative A? acts as a substrate of an enzyme generated when a microorganism is growing, and is then converted to the chromogen A, and the derivative A? and the chromogen B are substantially not colored in the culture medium unless a microorganism is inoculated.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 12, 2006
    Applicant: CHISSO CORPORATION
    Inventor: Masashi Ushiyama
  • Electro-chargeable fiber, nonwoven fabric and nonwoven product thereof
    Publication number: 20050268817
    Abstract: An electro-chargeable fiber includes a thermoplastic resin fiber having a nonionic fiber finish containing at least one major component selected from the group consisting of (a) at least one sorbitan fatty acid ester having formula (I) or formula (II) and (b) polyoxyalkylene alkyl ether having formula (III), wherein the nonionic fiber finish is present in an amount of 0.01-1.
    Type: Application
    Filed: May 17, 2005
    Publication date: December 8, 2005
    Applicants: CHISSO CORPORATION, CHISSO POLYPRO FIBER COMPANY LIMITED
    Inventors: Masuo Iwata, Takayuki Nishitani
  • Varnish composition and liquid-crystal display element
    Patent number: 6949281
    Abstract: An object of the present invention is to provide a varnish composition which can achieve totally and with good balance the improvement in various properties including electrical properties such as residual charge, a voltage holding ratio and image sticking, a pre-tilt angle, coating property, alignment property, and so on, which are desired for a liquid crystal aligning film formed. The varnish composition comprises polymer ingredients containing polyamic acid B represented by formula (1), polyamic acid A represented by formula (2) having a side chain of not less than 3 carbon atoms and N-substituted polyamide represented by formula (3), and a solvent for dissolving the polymer ingredients. The varnish composition contains 0.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: September 27, 2005
    Assignee: Chisso Corporation
    Inventors: Satoshi Tanioka, Kumiko Fukui, Shizuo Murata, Hiroshi Ono, Itsuo Shimizu
  • Polymer compound, precursor for the same and thin film-forming method using the same polymer precursor
    Patent number: 6949618
    Abstract: Provided are polyimide and a thin film thereof which have a three-dimensional structure and therefore are excellent in a mechanical strength and a heat resistance as compared with those of conventional linear polyimide. The polyimide is obtained from a salt of multifunctional amine represented by Formula (1): (wherein A represents a tetravalent organic group, and n represents an integer of 0 to 3) and tetracarboxylic diester represented by Formula (2): (wherein B represents a tetravalent organic group having 1 to 20 carbon atoms, and R1 and R2 each represent independently an alkyl group having 1 to 5 carbon atoms).
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: September 27, 2005
    Assignee: Chisso Corporation
    Inventor: Takashi Kato
  • Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
    Patent number: 6946169
    Abstract: The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: September 20, 2005
    Assignee: Chisso Corporation
    Inventors: Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito
  • THROMBIN DERIVATIVES AND PROCESS FOR PRODUCING THE SAME, ANHYDROTHROMBIN DERIVATIVES AND PROCESS FOR PRODUCING THE SAME, PLATELET AGGLUTINATION-INDUCING COMPOSITIONS, METHOD OF INDUCING PLATELET AGGLUTINATION, CLINICAL TEST REAGENTS, CLINICAL TEST METHOD, THROMBOSIS INHIBITORS, ADSORBENT AND PROCESS FOR PRODUCING THE SAME
    Patent number: 6946279
    Abstract: A thrombin derivative having a lowered fibrinogen activity, a process for producing thereof, an anhydrothrombin derivative having a lowered fibrinogen activity, and a process for producing thereof are provided. This invention is to provide a thrombin derivative formed by modifying carboxyl group(s) of the thrombin and an anhydrothrombin derivative formed by modifying carboxyl group(s) of the anhydrothrombin. The thrombin derivative can be utilized as a composition for inducing platelet aggregation and further as a reagent of specific aggregation for clinical testing and the like. By affinity chromatography using carboxyl group(s) bound with anhydrothrombin as a ligand, it is made possible to carry out necessary purification with high selectivity relative to the blood coagulation factor VIII.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: September 20, 2005
    Assignees: Fujimori Kogyo Co., Ltd., Chisso Corporation
    Inventor: Kazuya Hosokawa
  • Liquid crystal composition and liquid crystal display
    Patent number: 6936312
    Abstract: A liquid crystal composition comprising a first component consisting of at least one compound selected from a group of compounds represented by Formula (I) and a second component consisting of at least one compound selected from a group of compounds represented by Formulas (II-1) to (II-8): in which each symbols of Formula (I) are defined in the specification and Formulas (II-1) to (II-8) and their symbols are also defined in the specification.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: August 30, 2005
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Yuzuru Torii, Hitoshi Yamamoto
  • Cyclic tertiary amine compound and organic electroluminescent device containing the compound
    Patent number: 6936189
    Abstract: A cyclic tertiary amine compound represented by a formula (1) and an organic luminescent device are disclosed. Use of the cyclic tertiary amine compound as a hole transport material, a hole injection material or an organic electroluminescent material can provide organic EL devices having high luminous efficiency and a long service life.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: August 30, 2005
    Assignee: Chisso Corporation
    Inventors: Wang Guofang, Manabu Uchida, Hajime Yokoi, Takaharu Nakano, Kenji Furukawa
  • Liquid crystal composition and liquid crystal display element
    Patent number: 6921560
    Abstract: A liquid crystal composition having a negative dielectric anisotropy, containing at least one compound selected from the group of compounds represented by Formulas (1-1), (1-2), (1-3) and (1-4) as a first component: wherein R5 is alkyl or alkenyl; R2 is alkyl or alkoxy; A5 is 1,4-phenylene or 2-fluoro-1,4-phenylene; and A6 is 1,4-phenylene, 2-fluoro-1,4-phenylene or 2,3-difluoro-1,4-phenylene.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: July 26, 2005
    Assignees: Chisso Petrochemical Corporation, Chisso Corporation
    Inventors: Eiji Okabe, Yoshitaka Tomi, Masayuki Saito, Hitoshi Yamamoto
  • Liquid crystal composition and liquid crystal display element
    Patent number: 6919108
    Abstract: A liquid crystal composition containing at least one compound selected from compounds of formula (1) and formula (2) as a first component, at least one compound selected from compounds of formula (3) as a second component, and at least one compound selected from compounds of formula (4) as a third component: wherein R1 is alkyl; R2 is alkyl or alkenyl; Z1 and Z2 are independently a single bond or —(CH2)2—; X1 is hydrogen or fluorine; and Y1 is fluorine or —OCF3. Also provided is a liquid crystal display element containing the composition.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: July 19, 2005
    Assignees: Chisso Petrochemical Corporation, Chisso Corporation
    Inventors: Yoshitaka Tomi, Eiji Okabe
  • Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these
    Patent number: 6902832
    Abstract: A charge transporting material, a light emitting material and an organic electroluminescent device having high efficiency using a specified diazapentacene derivative represented by the following general formula (1): (in the general formula (1), R1 to R10 each represents independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbon atoms, an alkoxy group, a substituted or not-substituted amino group, an aryl group or a heterocyclic group, in which the substituted or not-substituted aryl group or heterocyclic group, when they are adjacent with each other, may be of a structure condensed to each other, X1 and X2 each represents independently an oxygen atom or a sulfur atom, and Y1 and Y2 each represents independently a substituted or not-substituted alkyl group of 1 to 6 carbon atoms, an aryl group or a heterocyclic group).
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: June 7, 2005
    Assignee: Chisso Corporation
    Inventors: Manabu Uchida, Guofang Wang, Takaharu Nakano, Kenji Furukawa, Keiji Okada, Masatoshi Kozaki