Patents Assigned to Chisso Corporation
  • Difluorovinyl compound, liquid crystal composition and liquid crystal display
    Patent number: 6649227
    Abstract: Provided are liquid crystalline compounds having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33/K11 and excellent solubility at low temperature, a liquid crystal composition using the same and a liquid crystal display.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: November 18, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Takashi Kato, Shuichi Matsui, Hiroyuki Takeuchi, Yasuhiro Kubo, Etsuo Nakagawa
  • Recombinant photoproteins and their conjugates
    Publication number: 20030212259
    Abstract: This invention is to provide a photoprotein which binds with a ligand specific for a substance to be detected at a binding ratio of 1:1 such that the luminescence activity is not reduced by binding with the ligand, a conjugate comprising the luminescent photoprotein and ligand, and a substance detection method which employs the conjugate as a marker. A calcium-binding photoprotein is produced having cysteine residue introduced within the 4th amino acid residue from the amino-terminus. A conjugate is formed by binding a ligand specific for a substance to be detected to the calcium-binding photoprotein, in a binding ratio of 1:1, via the introduced cysteine residue. The conjugate may be utilized as a marker for a substance to be detected.
    Type: Application
    Filed: March 28, 2003
    Publication date: November 13, 2003
    Applicant: CHISSO CORPORATION
    Inventor: Satoshi Inouye
  • Liquid crystal composition and liquid crystal display element
    Patent number: 6641872
    Abstract: A liquid crystal composition comprising component I consisting of at least one compound represented by formula (I) and component II consisting at least one compound selected from a group of compounds represented by formulas (II-1) to (II-7): wherein each symbol in the formulas (I) to (II-7) is represented in the specification.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: November 4, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Yasuhiro Kubo, Kanetsugu Terashima
  • Intermediates and improved processes for the preparation of neplanocin A
    Patent number: 6642424
    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: May 7, 2001
    Date of Patent: November 4, 2003
    Assignee: Chisso Corporation
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Organic el device
    Patent number: 6635988
    Abstract: An organic EL device having an organic EL structure which moisture does not enter and maintaining stable luminescence characteristics for a long period of time. An anode (2), and organic substance layer (3), and a cathode (4) are formed on a transparent substrate (1). A combination (insulating layer-moisture reaction layer combination) including an insulating layer (5) and a moisture reaction layer (6) formed on the insulating layer (5) covers an organic EL structure including the organic substance layer, the cathode, and a portion of the anode. The material of the moisture reaction layer (6) is a metal having a Pauling's electronegativity of less than 1.2. There are large differences in the number of dark spots produced and the growth of the dark spots between a metal; e.g., Ca (1.0), whose electronegativity is less than 1.2 and a metal; e.g., Mg (1.2), whose electronegativity is 1.2.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: October 21, 2003
    Assignee: Chisso Corporation
    Inventors: Takenori Izumizawa, Kenji Furukawa
  • Elastomeric polypropylene
    Patent number: 6635733
    Abstract: An elastomeric polypropylene wherein (a) an isotactic pentad (I5) is 0.150-0.749, (b) a different bond due to a 2,1-insertion reaction is 0.11-20 mol %, (c) a different bond due to a 1,3-insertion reaction is 0-10 mol % and (d) a melting point (Tm) is 50-160° C., (a) to (c) being determined from 13C NMR spectra, which is obtainable by the polymerization of propylene using any one of a metallocene catalyst (I) comprising a metallocene compound (A), an activating compound (B) and if desired, an organoaluminum compound (C), a supported metallocene catalyst (II) prepared by supporting the metallocene catalyst (I) on a finely particulate support (D), and a supported metallocene catalyst (III) prepared by adding an organoaluminum compound (E) to the supported metallocene catalyst (II). In particular, it has excellent transparency and elastic characteristics.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: October 21, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Tsuyoshi Yahata, Masato Nakano, Yoshiyuki Ohgi, Tsutomu Ushioda
  • Basic catalysts and process for producing carbonyl compound derivatives
    Patent number: 6632959
    Abstract: A base catalyst, obtained by formulating at least one alkali metal compound selected from the group consisting of alkoxides, hydroxides and oxides of alkali metals and an alkaline-earth metal oxide in a ratio of “the weight of alkaline metal compound/the weight of alkaline-earth metal oxide”=0.005 to 1, is used in a reaction of an aldehyde to produce a glycol monoester, thereby providing a base catalyst with an improved efficiency which can be applied to aldol reaction or the like and which has high activity to give target product in a high selectivity.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: October 14, 2003
    Assignee: Chisso Corporation
    Inventors: Kan-ichiro Inui, Shunji Oshima, Toru Kurabayashi, Sakae Kawamura, Masahiro Yokota
  • Optically active nitro alcohol derivatives, optically active amino alcohol derivatives, and process for preparing the same
    Patent number: 6632955
    Abstract: Optically active 1-substituted phenyl-2-nitro alcohol derivatives having the formula (1) and the process for producing thereof, and 1-substituted phenyl-2-amino alcohol derivatives having the formula (2) and the process for producing thereof from the optically active 1-substituted phenyl-2-nitro alcohol derivatives. From these nitro alcohols, pharmaceuticals such as (R)-albutamin and (R)-sarmeterol useful as a bronchodilator is obtained via optically active amino alcohols which are useful pharmaceutical intermediates.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: October 14, 2003
    Assignee: Chisso Corporation
    Inventors: Masakatsu Shibasaki, Hiroaki Sasai, Yasuo Urata, Mamoru Fujita
  • Long fiber-reinforced polypropylene resin composition
    Patent number: 6627692
    Abstract: Provided are a long fiber-reinforced polypropylene resin composition and its moldings which have a high rigidity, impact resistance and durability, and especially have an extremely good repeated impact resistance and creep resistance, and are therefore suitable for various parts including automobile parts and other industrial parts.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: September 30, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Koichi Saito, Toshimori Nakai, Nobukazu Atsumi, Hideshi Ishiwa
  • Frozen foods and process for producing the same
    Patent number: 6627237
    Abstract: The frozen food or food material includes a food or food material processed with from 0.1% by weight to 5% by weight of an alkali metal halide or an alkali earth metal halide, from 0.01% by weight to 0.5% by weight of an alkali metal bicarbonate or an alkali earth metal bicarbonate, from 0.0005% by weight to 0.05% by weight of an organic acid, and from 0.05% by weight to 10% by weight of gelatin, and from 0.05% by weight to 10% by weight of polylysine, as needed, each based on the weight of the food or food material, or a mixture of two or more. The frozen food or food material can be stored in cold storage for a prolonged period of time, and the original taste or flavor of the food or food material is not spoiled upon thawing or unfreezing the frozen food or food material.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: September 30, 2003
    Assignee: Chisso Corporation
    Inventor: Yoshinori Naito
  • Method for producing liquid crystal display device
    Patent number: 6623913
    Abstract: Disclosed is a method for producing liquid crystal display devices comprising a step for forming a transparent electrode and a circuit element of semiconductor on the surface of a pair of transparent substrates, and various steps for applying a photoresist, exposing to the light, etching, releasing the photoresist, inspecting the electrodes and circuit elements of semiconductor, forming an insulating film, forming an alignment film, rubbing the alignment film, spreading spacers, applying a sealing agent, fabricating a cell, filling a liquid crystal, pasting a polarizing plate, and connecting a driver IC characterized in that a soft X-ray is irradiated to the substrate in at least one step prior to the rubbing of the alignment films to produce liquid crystal display devices, at a high yield, in which devices number of pixel defect is small.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 23, 2003
    Assignees: Chisso Corporation, IInuma Gauge Manufacturing Company Limited, Hamamatsu Photonics Kabushiki Kaisha
    Inventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
  • Intermediates and improved processes for the preparation of neplanocin A
    Publication number: 20030175943
    Abstract: Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6dec-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: Application
    Filed: February 21, 2003
    Publication date: September 18, 2003
    Applicant: CHISSO CORPORATION
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
    Patent number: 6620339
    Abstract: The present invention provides a polyimide alignment film having excellent electrical properties and excellent reliability for use in the field of electronic materials which comprises a polyimide resin produced from a polyamic acid composition comprising a polyamic acid forming a polyimide resin of a low residual voltage and a high voltage holding ratio, and a polyamic acid forming a polyimide resin of a large pre-tilt angle, blended them in the ratio of the former to the latter of 50/50 to 95/5 (weight ratio), a polyamic acid composition for providing such a polyimide aligning film and a liquid crystal display element produced from such an aligning film.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: September 16, 2003
    Assignee: Chisso Corporation
    Inventors: Itsuo Shimizu, Kumiko Hara, Haruo Kato, Satoshi Tanioka, Shizuo Murata
  • Splittable multi-component fiber, method for producing it, and fibrous article comprising it
    Patent number: 6617023
    Abstract: The present invention relates to a splittable multi-component fiber of good splittability, a method for producing it, and a fibrous article comprising it. More precisely, the invention relates to a splittable multi-component fiber of good splittability favorable for use in the field of industrial materials for battery separators, wipers, filters, etc., and also in the field of sanitary materials for napkin, etc. and relates to a method for producing it, and a fibrous article comprising it.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: September 9, 2003
    Assignee: Chisso Corporation
    Inventors: Toshihiko Tsutsui, Mitsuru Kojima, Masayasu Suzuki, Kazuyuki Sakamoto, Masaru Nishijima
  • Organic electroluminescent device containing dithiafulvene derivative
    Patent number: 6617053
    Abstract: An organic electroluminescent device having a high luminous efficiency and a long life, which comprises a dithiafulvene derivative represented by Formula (1): wherein R1 and R2 represent an alkyl group, an aryl group or a heterocyclic group; R3 to R6 represent a hydrogen atom, an alkyl group, an alkenyl group, an alkylthio group, an arylthio group, an aryl group or a heterocyclic group; and when R3 to R6 are an aryl group or a heterocyclic group adjacent to each other, they may be condensed to each other.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: September 9, 2003
    Assignee: Chisso Corporation
    Inventors: Yuichi Fujishita, Manabu Uchida, Takaharu Nakano, Kenji Furukawa
  • Intermediates and improved processes for the preparation of neplanocin A
    Publication number: 20030162281
    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: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Applicant: CHISSO CORPORATION
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Intermediates and improved processes for the preparation of neplanocin A
    Publication number: 20030162282
    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: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Applicant: CHISSO CORPORATION
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Elastic long-fiber non-woven fabric, and fabric product using the same
    Publication number: 20030162458
    Abstract: PROBLEM TO BE SOLVED: To provide an elastic long-fiber non-woven fabric that exhibits excellent elasticity, appropriate stress upon elongation, an excellent anti-blocking property, and an excellent soft feel, and which is suitable for applications to fabric products; and to provide fabric products manufactured from such an elastic long-fiber non-woven fabric.
    Type: Application
    Filed: February 13, 2003
    Publication date: August 28, 2003
    Applicant: Chisso Corporation
    Inventors: Yoshimi Tsujiyama, Hisanobu Minamizawa, Junji Iwata, Kouichi Hatada
  • Intermediates and improved processes for the preparation of neplanocin A
    Publication number: 20030157697
    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: Application
    Filed: February 21, 2003
    Publication date: August 21, 2003
    Applicant: CHISSO CORPORATION
    Inventors: Naoyuki Yoshida, Kunio Ogasawara
  • Difluoromethyl ether derivative and process for producing the same
    Patent number: 6605747
    Abstract: The present invention provides a difluoromethyl ether derivative which shows various suitable physical properties as a liquid crystal compound, a liquid crystal composition comprising the compound and a liquid crystal display element containing the composition, and also provides a simple and efficient process for producing the difluoromethyl ether derivative. According to the present invention, a process for producing a difluoromethyl ether derivative represented by Formula (1d): wherein the variables are defined in the specification, is characterized by using an &agr;&agr;-difluorocyclohexylidene derivative represented by Formula (1a): wherein R1, rings A1 and A2, Z1, Z2, k and l have the same meanings as defined in the specification, as a starting material.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: August 12, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Tomoyuki Kondo, Kouki Sagou, Shuichi Matsui, Hiroyuki Takeuchi, Yasuhiro Kubo, Etsuo Nakagawa