Patents Assigned to Mitsubishi Chemical Industries Ltd.
  • Method of treating combustion exhaust gas containing nitrogen oxides
    Patent number: 4113838
    Abstract: A method of treating a combustion exhaust gas containing nitrogen oxides comprises:A first step of removing nitrogen oxides by treating a mixture of the exhaust gas, oxygen and ammonia in the absence of hydrogen or in the presence of lower than 10 mole ratio of hydrogen to ammonia at a temperature from 700.degree. C to 1300.degree. C andA second step of adjusting a mole ratio of hydrogen to ammonia in the pretreated exhaust gas to higher than 3 and treating the mixed gas at a temperature from 490.degree. C to 700.degree. C.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: September 12, 1978
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Sakae Koike, Shoichi Matsunami, Yorinobu Goto, Yoshio Tanabe
  • Process for producing a cylic ether from an acetic ester of a 1,4-glycol
    Patent number: 4105679
    Abstract: A process for producing tetrahydrofuran or dihydrofuran from an acetic ester of 1,4-butanediol or 1,4-dihydroxybutene-2 is disclosed in which the raw material liquid acetic ester and steam are reacted in the presence of an acid catalyst in a plurality of reaction zones in liquid-gas countercurrent contact, a gaseous fraction containing the product cyclic ether is recycled to the preceding reaction zone while a liquid fraction containing unreacted raw material is transferred into the succeeding zone and the product cyclic ether is recovered from the gaseous fraction discharged from the first zone by distillation whereby the conversion of the acetic ester into the cyclic ether is improved.
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: August 8, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventor: Yasuo Tanabe
  • Process for removing water from water soluble polymer
    Patent number: 4105510
    Abstract: The invention relates to an improved process for removing water, under elevated temperature, from aqueous gel of water soluble polymer, such as polymer or copolymer of acrylamide and/or quaternary ammonium salts of dialkylaminoamlkylmethacrylate, to prevent from the deterioration of polymer properties. The process is accomplished by addition of polyhydric phenols, benzoquinones or derivatives thereof prior to removal of water.
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: August 8, 1978
    Assignees: Kyoritsu Yuki Co., Ltd., Mitsubishi Chemical Industries Ltd.
    Inventors: Atsuo Tago, Ryoichi Yamanaka, Susumu Matsumoto
  • N.sup.2 -naphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof, and antithrombotic compositions and methods employing them
    Patent number: 4104392
    Abstract: N.sup.2 -naphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: August 1, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Akiko Hijikata, Ryoji Kikumoto, Yoshikuni Tamao, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura
  • Selective extraction of yttrium ions
    Patent number: 4104358
    Abstract: Yttrium ions are selectively extracted by contacting an acid phosphoric ester with an aqueous solution containing diethylenetriaminepentaacetic acid and yttrium ions and one or more heavy rare earth (atomic number of 64 to 71) ions.
    Type: Grant
    Filed: June 7, 1977
    Date of Patent: August 1, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Yukinori Minagawa, Tsugio Kaneko, Fumikazu Yajima, Kunihiko Yamaguchi, Toshihiko Yoshitomi
  • Process for blending liquid rubber and carbon black
    Patent number: 4098715
    Abstract: Carbon black and liquid rubber are blended to form a dispersion by mixing 60 to 150 parts by weight of the carbon black with 100 parts by weight of the liquid rubber to form an initial dispersion of the carbon black in the liquid rubber and diluting the dispersion with additional liquid rubber to prepare a composition having the required carbon black content.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: July 4, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Tatsuo Masuko, Osami Yanagida, Shunji Yamamoto
  • Process for preparing cyclic ethers
    Patent number: 4094887
    Abstract: This invention relates to a process for preparing tetrahydrofuran or dihydrofuran by reacting an acetic acid ester of 1,4-butanediol or 1,4-dihydroxybutene-2 and water in the presence of an acid catalyst with a high yield. The process is characterized in that the reaction is carried out in two separate reaction zone in combination with a plurality of distilling columns and a part of reaction product is recycled to a predetermined position of the reaction zone.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: June 13, 1978
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventor: Yasuo Tanabe
  • Process for preparing carbon products
    Patent number: 4089934
    Abstract: A process for preparing a carbon product which comprises mixing a carbon material, bitumen and a liquid medium to form a slurry, removing the liquid medium of said slurry along with at least a portion of the low molecular weight components of the bitumen to form a solid material, molding the separated solid material and then heat-treating the molded material.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: May 16, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Toyo Carbon Co., Ltd.
    Inventors: Osamu Akiyoshi, Akio Mukai, Yoshihiro Miwa
  • Process for preparing tacky polyolefin film
    Patent number: 4087505
    Abstract: A tacky polyolefin film is prepared by forming a film using a composition comprising a polyolefin resin, a low grade polyolefin and a tackifier and aging the resulting film.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: May 2, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Masaaki Sugimoto, Yoshio Matsumoto, Nobushige Ikeya, Koichi Hasegawa
  • Photosensitive composition
    Patent number: 4083725
    Abstract: A photosensitive composition is prepared from a mixture of a cinnamic acid photosensitive resin and a halogen-substituted benzanthrone sensitizer.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: April 11, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Hideo Fukutani, Konoe Miura, Chihiro Eguchi, Yoshihiro Takahashi, Kazuo Torige
  • Method of making sized paper
    Patent number: 4083749
    Abstract: An aqueous pulp slurry containing a cationic neutral sizing agent or a wet sheet prepared therefrom is treated with an oxidizing agent in a method of making a sized paper.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: April 11, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Hamano Industry Co., Ltd.
    Inventors: Tatsuro Miwa, Akira Aoyama, Masatoshi Shimosaka, Hideto Kusumoto, Katsuhiko Kuroda
  • Process for producing high purity methoxyanthraquinones
    Patent number: 4080370
    Abstract: Methoxyanthraquinones are produced from the corresponding nitroanthraquinones by reacting a nitroanthraquinone with methanol and an alkali in a reaction medium chiefly comprising methanol at a temperature of 50.degree.-130.degree. C under atmospheric or superatmospheric pressure in the presence of molecular oxygen wherein the dissolved oxygen concentration of the reaction medium is maintained at a value of at least 1 ppm.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: March 21, 1978
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Yoshio Kimura, Yasuhito Goto, Kenzo Ban, Kiyotomi Kosai, Haruki Uchida, Kiyoharu Urakawa
  • Insolubilized glucose isomerase
    Patent number: 4078970
    Abstract: There is disclosed a process for producing an insolubilized glucose isomerase useful for converting glucose into fructose comprising contacting a macroporous anion exchange resin with glucose isomerase to effect absorption of the isomerase on the resin, said resin having high porosity and high ion exchange capacity, whereby the resulted insolubilized glucose isomerase has high degree of adsorption, high activity retention and high activity yield.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: March 14, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Seikagaku Kogyo Co., Ltd.
    Inventors: Yoshimasa Fujita, Akiyoshi Matsumoto, Isao Kawakami, Tadashi Hishida, Akira Kamata, Yusuke Maeda
  • Method for the preparation of fibers or films from phenolic resins
    Patent number: 4079113
    Abstract: Fibers or films with high mechanical strengths are produced from novolacs which are obtained by reaction of resols with phenols under neutral or acidic conditions.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: March 14, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Tomiaki Kimura, Masamichi Watanabe, Yoichiro Yamakawa, Seiichi Mukai, Kunihiro Takenaka, Masahiro Kita
  • N.sup.2 -naphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof
    Patent number: 4070457
    Abstract: N.sup.2 -naphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: January 24, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Ryoji Kikumoto, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura, Yoshikuni Tamao, Akiko Hijikata
  • N.sup.2 -substituted-L-arginine derivatives and the pharmaceutically acceptable acid addition salts thereof
    Patent number: 4069323
    Abstract: N.sup.2 -substituted-L-arginine esters and amides, and the pharmaceutically acceptable acid addition salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis.
    Type: Grant
    Filed: July 8, 1976
    Date of Patent: January 17, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Akiko Hijikata, Ryoji Kikumoto, Yoshikuni Tamao, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura
  • N.sup.2 -Alkoxynaphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof
    Patent number: 4069318
    Abstract: N.sup.2 -alkoxynaphthalenesulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis in mammals, and are prepared by reacting N.sup.2 -alkoxynaphthalenesulfonyl-L-arginyl halide with a secondary amine.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: January 17, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Akiko Hijikata, Ryoji Kikumoto, Yoshikuni Tamao, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura
  • N.sup.2 -Arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof
    Patent number: 4069317
    Abstract: N.sup.2 -arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis in mammals.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: January 17, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Akiko Hijikata, Ryoji Kikumoto, Yoshikuni Tamao, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura
  • N.sup.2 -arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof
    Patent number: 4066773
    Abstract: N.sup.2 -arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis in mammals.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: January 3, 1978
    Assignees: Mitsubishi Chemical Industries Ltd., Shosuke Okamoto
    Inventors: Shosuke Okamoto, Akiko Hijikata, Ryoji Kikumoto, Yoshikuno Tamao, Kazuo Ohkubo, Tohru Tezuka, Shinji Tonomura
  • Oxazolidone catalyst
    Patent number: 4066628
    Abstract: Oxazolidones are produced by reacting an organic isocyanate with an epoxide in the presence of a catalyst selected from the group consisting of dialkyl zinc, zinc carboxylate, organozinc chelate compound and trialkyl aluminum. Polyoxazolidones produced according to the present invention are useful starting materials for the manufacture of a wide variety of product including foams, coatings, adhesives, elastomers and the like.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: January 3, 1978
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Kaneyoshi Ashida, Kurt C. Frisch, Panagiotis Kordomenos