Patents Assigned to Kyorin Seiyaku Kabushiki Kaisha
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Patent number: 5602165Abstract: 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: GrantFiled: May 10, 1994Date of Patent: February 11, 1997Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Shinji Kamijo, Jun Imai, Hiromichi Kodaira
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Patent number: 5238946Abstract: 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: GrantFiled: August 21, 1989Date of Patent: August 24, 1993Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Kazunori Kasuga, Haruo Sekiguchi, Katsuhiro Hamada, Jun Imai, Shinji Kamijo
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Patent number: 5188833Abstract: 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: GrantFiled: January 22, 1991Date of Patent: February 23, 1993Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Shinji Kamijo, Jun Imai, Hiromichi Kodaira
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Patent number: 5151434Abstract: 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: GrantFiled: December 12, 1989Date of Patent: September 29, 1992Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Hirohsi Uchida, Jun Imai, Masakatsu Komuro
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Patent number: 5137909Abstract: 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: GrantFiled: May 14, 1990Date of Patent: August 11, 1992Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Hidehiko Miura, Naoki Harano, Yasuo Takano, Toshiro Mochizuki, Yoshinori Takahashi, deceased, Takashi Nagayama
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Patent number: 4990516Abstract: 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: GrantFiled: November 13, 1989Date of Patent: February 5, 1991Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Mitsuo Ohashi, Fukutaro Taga, Takashi Hirayama
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Patent number: 4923871Abstract: 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: GrantFiled: November 25, 1987Date of Patent: May 8, 1990Assignees: Kyorin Seiyaku Kabushiki Kaisha, Japanese Foundation for Cancer ResearchInventors: Makoto Inaba, Hirotaka Shinoda, Fujio Iinuma
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Patent number: 4735954Abstract: Novel anti-rheumatic agent containing 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine as an active ingredient.Type: GrantFiled: September 9, 1986Date of Patent: April 5, 1988Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Keigo Nishino, Saburo Hara
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Patent number: 4599418Abstract: 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: GrantFiled: February 21, 1984Date of Patent: July 8, 1986Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Satoshi Murayama, Fjuio Iinuma
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Patent number: 4472579Abstract: 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: GrantFiled: August 31, 1981Date of Patent: September 18, 1984Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Toshie Shiba, Hiroshi Matsukubo
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Patent number: 4448962Abstract: 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: GrantFiled: October 14, 1981Date of Patent: May 15, 1984Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Seigo Suzue, Akira Ito, Hiroshi Koga
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Patent number: 4398029Abstract: 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: GrantFiled: February 20, 1981Date of Patent: August 9, 1983Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Hiroshi Koga, Satoshi Murayama
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Patent number: 4146719Abstract: 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: GrantFiled: February 16, 1978Date of Patent: March 27, 1979Assignee: Kyorin Seiyaku Kabushiki KaishaInventor: Tsutomu Irikura
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Patent number: 3962249Abstract: 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: GrantFiled: March 6, 1975Date of Patent: June 8, 1976Assignee: Kyorin Seiyaku Kabushiki KaishaInventor: Tsutomu Irikura
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Patent number: 3956328Abstract: 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: GrantFiled: September 4, 1974Date of Patent: May 11, 1976Assignee: Kyorin Seiyaku Kabushiki KaishaInventor: Tsutomu Irikura
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Patent number: 3937821Abstract: 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: GrantFiled: November 19, 1973Date of Patent: February 10, 1976Assignee: Kyorin Seiyaku Kabushiki KaishaInventors: Tsutomu Irikura, Kazunari Shirai, Mamoru Tada, Terumi Tamada, Jun Imai
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Patent number: 3934036Abstract: 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: GrantFiled: January 23, 1975Date of Patent: January 20, 1976Assignee: Kyorin Seiyaku Kabushiki KaishaInventor: Tsutomu Irikura