Patents Assigned to Kyorin Seiyaku Kabushiki Kaisha
  • Patent number: 5602165
    Abstract: A transdermal absorptive drug formulation containing 3-isobutyryl-2-isopropylpyrazolo [1,5-a ]pyridine as active ingredient effective for bronchial asthma and cerebrovascular disorder is provided. The formulation affords excellent sustained releasing and long acting characteristics with substantially reduced side-effects such as nausea and vomitting.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 11, 1997
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Shinji Kamijo, Jun Imai, Hiromichi Kodaira
  • Patent number: 5238946
    Abstract: A therapeutic pharmaceutical composition containing 3,4,5-trimethoxy-N-3-piperidylbenzamide (troxipide) as an active ingredient for gastritis in admixture with an inert pharmaceutical carrier. The composition may be administered orally in the forms of tablets, capsules, granules and fine granules.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: August 24, 1993
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Kazunori Kasuga, Haruo Sekiguchi, Katsuhiro Hamada, Jun Imai, Shinji Kamijo
  • Patent number: 5188833
    Abstract: Freeze-dried pharmaceutical preparation containing antibacterial quinolinecarboxylic acid derivatives are provided. These preparations are characterized by their stability against light and heat and have rapid solubility.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: February 23, 1993
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Shinji Kamijo, Jun Imai, Hiromichi Kodaira
  • Patent number: 5151434
    Abstract: A controlled-release pharmaceutical preparation of 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine. The controlled-release preparation is in the form of powder or granule containing 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine, coated with medically non-active substance or in the form of rectal suppository containing 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine. Further the controlled-release is prepared by implanting 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine in fatty materials, or granulating it and coating the resultant particles with medically non-active substance.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: September 29, 1992
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Hirohsi Uchida, Jun Imai, Masakatsu Komuro
  • Patent number: 5137909
    Abstract: An indole derivative represented by the general formula (I) ##STR1## wherein R is hydrogen, lower alkyl having 1 to 6 carbons, carboxymethyl, or substituted or unsubstituted aralkyl; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 may be the same with or different from each other and are hydrogen, halogen, lower alkyl having 1 to 6 carbons, lower alkoxy having 1 to 6 carbons, acyl, substituted or unsubstituted amino, nitro, hydroxy, acyloxy, substituted or unsubstituted aralkyl, substituted or unsubstituted aryloxy, or substituted or unsubstituted aralkyloxy, or a combination of R.sup.2 and R.sup.3 may be methylenedioxy;R.sup.5 is hydrogen, lower alkyl having 1 to 6 carbons, or substituted or unsubstituted aralkyl; R and R.sup.4, or R.sup.1 and R.sup.5 may form together a six-membered ring constituted of methylene chains which may contain a heteroatom;R.sup.6 and R.sup.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: August 11, 1992
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Hidehiko Miura, Naoki Harano, Yasuo Takano, Toshiro Mochizuki, Yoshinori Takahashi, deceased, Takashi Nagayama
  • Patent number: 4990516
    Abstract: An ameliorating agent for dysmnesia, comprising as an effective component or components at least one of pyrazolo[1,5-a]pyridine derivatives represented by the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen or a lower alkyl of 1-4 carbons, R.sup.3 is hydrogen or a lower alkyl of 1-3 carbons or a lower alkoxy of 1-3 carbons.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: February 5, 1991
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Mitsuo Ohashi, Fukutaro Taga, Takashi Hirayama
  • Patent number: 4923871
    Abstract: This invention relates to new and useful 2,6-dimethyl-4-(pyrazolo[1,5-a]pyridin-3-yl)-1,4-dihydropyridine-3,5-dicar boxylate derivatives of the following formula: ##STR1## and pharmaceutically acceptable salts thereof, having potent promoting activity of some antitumor agents against various kinds of tumor cells including multiple drug resistant tumor cells.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: May 8, 1990
    Assignees: Kyorin Seiyaku Kabushiki Kaisha, Japanese Foundation for Cancer Research
    Inventors: Makoto Inaba, Hirotaka Shinoda, Fujio Iinuma
  • Patent number: 4735954
    Abstract: Novel anti-rheumatic agent containing 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine as an active ingredient.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: April 5, 1988
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Keigo Nishino, Saburo Hara
  • Patent number: 4599418
    Abstract: New compounds effective as antibacterial agent are disclosed. These new compounds include 8-[4-(4-aminobenzyl)-1-piperazinyl]-9-fluoro-6,7-dihydro-5-methyl-1-oxo-1H ,5H-benzo[ij]quinolizine-2-carboxylic acid, hydrates and acid addition salts thereof, and possess superior activities against gram-negative and gram-positive of aerobicbacteria.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: July 8, 1986
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Satoshi Murayama, Fjuio Iinuma
  • Patent number: 4472579
    Abstract: Process for the preparation of useful antimicorbial agents, 1-substituted-6-fluoro-7-(1-piperazinyl or 4-substituted-1-piperazinyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acids having the chemical structure [IV], ##STR1## wherein R.sub.1 is ethyl or vinyl group, andR.sub.4 is ##STR2## (R.sub.3 is hydrogen atom or lower alkyl group).
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: September 18, 1984
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Toshie Shiba, Hiroshi Matsukubo
  • Patent number: 4448962
    Abstract: This invention relates to new compounds of value as antibacterial agents. More particularly, it relates to quinoline carboxylic acid derivatives, the hydrates and the acid or alkali addition salts thereof.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: May 15, 1984
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Seigo Suzue, Akira Ito, Hiroshi Koga
  • Patent number: 4398029
    Abstract: This invention relates to new compounds of value as antibacterial agent. More particularly, it relates to quinoline carboxylic acid derivatives, the hydrates and the salts thereof.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: August 9, 1983
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Hiroshi Koga, Satoshi Murayama
  • Patent number: 4146719
    Abstract: This invention relates to new compounds of value as antibacterial agent. More particularly, it relates to piperazinyl derivatives of quinoline carboxylic acids, the hydrates, and the acid addition salts thereof.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: March 27, 1979
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventor: Tsutomu Irikura
  • Patent number: 3962249
    Abstract: 1-(3-Phenylpropyl)-4-furoylpiperazine represented by the following general formula (I), ##SPC1##(wherein: R.sub.1 and R.sub. 2, which may be the same or different, each represents a hydrogen atom or a lower alkyl group containing 1 to 4 carbon atoms; R.sub.3 represents a hydrogen atom, a halogen atom, a lower alkyl group containing 1 to 4 carbon atoms, or a lower alkoxy groups containing 1 to 4 carbon atoms; R.sub.4 and R.sub.5, which may be the same or different, each represents a hydrogen atom or a lower alkyl group containing 1 to 4 carbon atoms), and pharmaceutically acceptable addition salts thereof.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: June 8, 1976
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventor: Tsutomu Irikura
  • Patent number: 3956328
    Abstract: A compound of the formula (I), ##SPC1##and the non-toxic acid addition salts thereof are disclosed. These compounds and salts are useful as therapeutic agents for allergic diseases.
    Type: Grant
    Filed: September 4, 1974
    Date of Patent: May 11, 1976
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventor: Tsutomu Irikura
  • Patent number: 3937821
    Abstract: A process for preparing a pyrogen-free plasma substitute consisting of treating hydroxyethyl starch having a DS of 0.5 - 0.6 (preferably 0.55) and an intrinsic viscosity of 0.28 - 0.30 with an acid to lower the molecular weight; adjusting it to the desired hydroxyethyl starch having a DS of 0.55 and an intrinsic viscosity of 0.08- 0.14; adding a depyrogen reagent, such as Raney-nickel to it, if necessary, obtaining an isotonic aqueous solution containing 6% of hydroxyethyl starch and other various salts, preferably, adding sodium chloride (0.5%), potassium chloride (0.03%), calcium chloride dihydrate (0.02%), sodium lactate (0.224%), and glucose (1%)(W/V%) to 6% hydroxyethyl starch solution; and then adjusting the pH of the obtained iostonic aqueous solution to 6.2 .+-. 0.5.
    Type: Grant
    Filed: November 19, 1973
    Date of Patent: February 10, 1976
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Tsutomu Irikura, Kazunari Shirai, Mamoru Tada, Terumi Tamada, Jun Imai
  • Patent number: 3934036
    Abstract: The present invention relates to a valuable medicament for oral administration containing N-benzenesulfonyl-.beta.-alanine hydrazide as an effective ingredient. The drug of this invention is useful, as an immunosuppressive agent, for suppression of so-called autoimmune diseases such as nephrotic syndromes, rheumatoid arthritis and systemic lupus erythematosus etc.Furthermore, it may be possible to decrease or withdraw from dosing of corticosteroid by the use of KH-125 in a patient who has long been treated with that hormone.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: January 20, 1976
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventor: Tsutomu Irikura