Patents by Inventor Sadao Ishihara
Sadao Ishihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6967495Abstract: In an adapter card, is a clock signal converting circuit converts a clock signal, output from a signal generator of a burn-in apparatus, from a lower—to a higher-frequency clock signal. Plural delay circuits synchronize each burn-in signal output from the signal generator with the clock signal. A connector of an adapter is connected between a burn-in card and a connector mounted in a burn-in chamber, to burn in a semiconductor device mounted on the burn-in card. The output of the signal generator is fed into the adapter card via its connector, and the output of the adapter card is supplied to the semiconductor device mounted on the burn-in card to burn in the semiconductor device.Type: GrantFiled: September 21, 2004Date of Patent: November 22, 2005Assignee: Fujitsu LimitedInventors: Yoshihiro Maesaki, Hiroshi Teshigawara, Sadao Ishihara, Yukio Tabuchi
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Publication number: 20050099197Abstract: An adapter card is provided which comprises: a clock signal converting circuit (1) which converts a clock signal, output from a signal generator contained in a burn-in apparatus, into a higher-frequency clock signal; and a plurality of delay circuits (2) for causing each burn-in signal output from the signal generator to synchronize with the clock signal, wherein a connector (4) of the adapter (10) is connected between a burn-in card and a connector mounted in a burn-in chamber, to burn in a semiconductor device mounted on the burn-in card. Alternatively, the input connector (4) of the adapter card (10) is connected to a connector mounted, for example, on the rear side of a back board of the burn-in apparatus; then, the output of the signal generator is fed into the adapter card via its connector (4), and the output of the adapter card (10) is supplied to the semiconductor device mounted on the burn-in card to burn in the semiconductor device.Type: ApplicationFiled: September 21, 2004Publication date: May 12, 2005Inventors: Yoshihiro Maesaki, Hiroshi Teshigawara, Sadao Ishihara, Yukio Tabuchi
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Patent number: 6591576Abstract: A structural member having a closed section, and an apparatus and a method for producing the same are provided to decrease production costs and secure the dimensional accuracy by a simple construction. The apparatus produces a structural member provided with a channel-shaped sectional portion and closed sectional portions adjacent thereto by bending a work and includes a press mold formed of a punch and a die oppositely installed and used for press-forming so that both side edges of the work are caused to overlap on the bottom wall of the channel-shaped sectional portion, and a fall-down prevention means which prevents both side edges opposed to each other of the work to be press-formed in the press mold from falling down and guides both side edges so that the end faces thereof are brought into contact with each other.Type: GrantFiled: September 20, 2000Date of Patent: July 15, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masataka Iida, Masahiko Takeuchi, Sadao Ishihara, Takanori Matsukura, Takayuki Furuhata
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Patent number: 6040339Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is alkyl; R.sup.2a, R.sup.2b, R.sup.2c and R.sup.2d are the same or different and each is hydrogen, optionally substituted alkyl or various other organic groups; R.sup.3 is alkyl; R.sup.4 is a group of formula (II), (III), (IV), (V), (VI), (VII), (VIII) or (IX): ##STR2## wherein: A.sup.1 is a single bond, alkylene or alkenylene; A.sup.2 is or alkenylene; A.sup.3 is a single bond, alkyleneor alkenylene; R.sup.5a and R.sup.5b are the same or different and each is hydrogen, alkyl or various other groups; R.sup.6 is alkyl or phenyl; R.sup.7 is hydrogen or alkyl; R.sup.8 is alkyl or various other groups; and n is 0 and pharmaceutically acceptable salts thereof have valuable inhibitory activity against acyl-CoA: cholesterol acyl transferase.Type: GrantFiled: May 28, 1998Date of Patent: March 21, 2000Assignee: Sankyo Company, LimitedInventors: Akira Yoshida, Kozo Oda, Takashi Kasai, Kousei Shimada, Hiroshi Kogen, Ichiro Hayakawa, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Taro Tokui
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Patent number: 5925658Abstract: An optically active thiazolidinone derivative having the general formula: ##STR1## wherein: R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a phenyl group, a substituted phenyl group (said substituent represents C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen), a phenyl-C.sub.1 -C.sub.2 alkyl group or a substituted phenyl-C.sub.3 -C.sub.2 alkyl group (the substituent of said phenyl represents C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen); R.sup.2 represents a C.sub.1 -C.sub.6 alkyl group; and n represents 1 or 2!.EffectThe optically active thiazolidinone derivative of the present invention has excellent anti-angina pectoris action and is useful as a preventive agent or a therapeutic agent for angina pectoris.Type: GrantFiled: September 2, 1997Date of Patent: July 20, 1999Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Fujio Saito, Yasuo Ohhata, Shigeki Miyake, Ryosuke Yorikane, Norio Fukuda
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Patent number: 5891898Abstract: A method for the treatment or prevention of an ulcerative disease comprising administering to a patient an effective amount of an active compound in admixture with a pharmacologically acceptable carrier or diluent, wherein said active compound is a thia-or oxazolidinone compound of the following formula or a pharmacologically acceptable salt thereof: ##STR1## wherein W is sulfur or oxygen and X is --N(R.sup.3)--, or X is sulfur or oxygen and W is --N(R.sup.3)--; R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl or aralkyl; R.sup.4 and R.sup.5 are the same or different and each is hydrogen, C.sub.1 -C.sub.6 alkyl,aralkyl, aryl, 5- or 6-membered aromatic heterocyclic; R.sup.6 is hydrogen, C.sub.1 -C.sub.6 alkyl or aralkyl; and A is C.sub.2 -C.sub.6 alkylene.Type: GrantFiled: August 25, 1998Date of Patent: April 6, 1999Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Shigeki Miyake, Keiichi Tabata, Mitsuko Makino
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Patent number: 5880147Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is alkyl; R.sup.2a, R.sup.2b, R.sup.2c and R.sup.2d are the same or different and each is hydrogen, optionally substituted alkyl, --(C.dbd.O)--B.sup.1 (wherein B.sup.1 is hydrogen or alkyl), nitro, --NR.sup.c R.sup.d (wherein R.sup.c is hydrogen or alkyl and Rd is alkyl), hydroxy, protected hydroxy group, alkoxy, cyano, alkylthio, alkylsulfinyl, alkylsulfonyl or halogen;R.sup.3 is alkyl; R.sup.4 is a group of the formula (II) ##STR2## wherein A.sup.1 is a single bond, alkylene or alkenylene; R.sup.5a and R.sup.5b are the same or different and each is hydrogen, alkyl or --A.sup.4 R.sup.5.sub.c wherein A is a single bond, alkylene or alkenylene and R.sup.5.sub.c is alkoxy; and n is 0, and pharmaceutically acceptable salts thereof. Such compounds have valuable inhibitory activity against acyl-CoA (cholesterol acyl transferase).Type: GrantFiled: September 18, 1996Date of Patent: March 9, 1999Assignee: Sankyo Company, LimitedInventors: Akira Yoshida, Kozo Oda, Takashi Kasai, Kousei Shimada, Hiroshi Kogen, Ichiro Hayakawa, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Taro Tokui
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Patent number: 5843973Abstract: A thiazolidinone compound represented by general formula (I) or a pharmacoligically acceptable salt thereof, ##STR1## wherein W represents sulfur or oxygen and X represents --N(R.sup.1)--, or alternatively X represents sulfur or oxygen and W represents --N(R.sup.1)--, and R.sup.1 represents hydrogen, alkyl or substituted alkyl; R.sup.2 and R.sup.3 are the same or different from each other, and each represents hydrogen, alkyl, substituted alkyl, aryl, or 5- or 6-membered heteroaryl; R.sup.4 represents hydrogen, alkyl or substituted C.sub.1 -C.sub.4 alkyl; R.sup.5 represents substituted cycloalkyl which may contain nitrogen, provided the substituents include --B--ONO.sub.2 (wherein B represents a single bond or alkylene) as the indispensable member and alkyl groups as optional members; and A represents a single bond or alkylene, has an excellent anti-anginal effect and thus is useful as an angina pectoris remedy or preventive.Type: GrantFiled: June 10, 1997Date of Patent: December 1, 1998Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Fujio Saito, Yasuo Ohhata, Shigeki Miyake, Ryosuke Yorikane, Norio Fukuda
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Patent number: 5827855Abstract: Compounds of formula (I): ##STR1## wherein R.sup.1 represents a group of formula (II) or (III): ##STR2## R.sup.2 is alkyl, alkenyl or alkynyl; R.sup.3 and R.sup.4 are each hydrogen, alkyl, alkenyl or alkynyl; R.sup.5 is hydrogen or a carboxy-protecting group; R.sup.a is a group of formula --OR.sup.6 ; R.sup.6 is hydrogen; R.sup.6a and R.sup.6b are each hydrogen, a hydroxy-protecting group, alkyl, alkanesulfonyl, halogenated alkanesulfonyl or arysulfonyl, and their salts and esters. Such compounds inhibit the synthesis of cholesterol, and can be used for the treatment and prophylaxis of hypercholesterolemia and of various cardiac disorders.Type: GrantFiled: December 28, 1995Date of Patent: October 27, 1998Assignee: Sankyo Company, LimitedInventors: Hiroshi Kogen, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Nobufusa Serizawa, Kiyoshi Hamano
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Patent number: 5705527Abstract: An amino acid compound of the formula: R.sup.1 NH--CH(R.sup.2)--COHN--A--ONO.sub.2, wherein R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.7 alkanoyl group, a C.sub.1 -C.sub.6 alkoxycarbonyl group, a C.sub.6 -C.sub.10 arylcarbonyl group, a C.sub.7 -C.sub.13 aralkylcarbonyl group, a C.sub.7 -C.sub.13 aralkyloxycarbonyl group or a 5- or 6-membered aromatic heterocyclic carbonyl group; R.sup.2 represents a substituted C.sub.1 -C.sub.6 alkyl group; and A represents a C.sub.2 -C.sub.5 alkylene group; and pharmacologically acceptable salts thereof. The amino acid compound has an excellent vasodilator action for collateral vessels and is useful for treating angina pectoris.Type: GrantFiled: April 20, 1995Date of Patent: January 6, 1998Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Fujio Saito, Takao Yoshioka, Hiroyuki Koike, Shigeki Miyake, Hiroshi Mizuno
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Patent number: 5614550Abstract: Compounds of formula (I) are provided: ##STR1## wherein: R.sup.1 represents an alkyl group; or a group of formula (II), (III), (IV) or (V): ##STR2## and wherein the groups R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are hydrogen or various organic groups; and pharmaceutically acceptable salts thereof; as well as methods for the preparation of such compounds and their use in the treatment and prophylaxis of hypercholesteremia and arteriosclerosis.Type: GrantFiled: February 27, 1996Date of Patent: March 25, 1997Assignee: Sankyo Company, LimitedInventors: Akira Yoshida, Koza Oda, Sadao Ishihara, Fujio Saito, Hiroyuki Koike, Teiichiro Koga, Eiichi Kitazawa, Hiroshi Kogen, Ichiro Hayakawa
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Patent number: 5580893Abstract: Nitroxyalkylamide compounds having the formula: R.sup.1 --(A).sub.n --CONH--B'--ONO.sub.2 wherein R.sup.1 is an optionally substituted furyl, furyloxy, thienyl, thienyloxy, isoxazolyl, phenoxy, phenylthio or 1,4-dibenzodioxanyl, A is a C.sub.1 -C.sub.4 alkylene group; B' is a C.sub.1 -C.sub.4 alkylene group; and n is 0 or 1. The compounds of the present invention have a desirable vasodilator action for collateral vessels and an anti-anginal action, and are useful as therapeutic agents for treating angina pectoris.Type: GrantFiled: July 25, 1994Date of Patent: December 3, 1996Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Fujio Saito, Mitsuru Kataoka, Hiroyuki Koike, Shigeki Miyake, Hiroshi Mizuno
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Patent number: 5534529Abstract: Compounds of formula (I) are provided: ##STR1## wherein: R.sup.1 represents an alkyl group; or a group of formula (II), (III), (IV) or (V): ##STR2## and wherein the groups R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are hydrogen or various organic groups; and pharmaceutically acceptable salts thereof; as well as methods for the preparation of such compounds and their use in the treatment and prophylaxis of hypercholesteremia and arteriosclerosis.Type: GrantFiled: June 28, 1994Date of Patent: July 9, 1996Assignee: Sankyo Company, LimitedInventors: Akira Yoshida, Koza Oda, Sadao Ishihara, Takashi Kasai, Fujio Saito, Hiroyuki Koike, Teiichiro Koga, Eiichi Kitazawa, Hiroshi Kogen, Ichiro Hayakawa
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Patent number: 5491167Abstract: Compounds of formula (I): ##STR1## and their salts and esters have the ability to inhibit the synthesis of cholesterol, and can thus be used for the treatment and prophylaxis of hypercholesterolemia and of various cardiac disorders.Type: GrantFiled: January 31, 1994Date of Patent: February 13, 1996Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Hiroshi Kogen, Teiichiro Koga, Eiichi Kitazawa, Nobufusa Serizawa
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Patent number: 5451688Abstract: Compounds of formula (I): ##STR1## [wherein R.sup.1 represents a group of formula (II) or (III): ##STR2## R.sup.2 is alkyl, alkenyl or alkynyl; R.sup.3 and R.sup.4 are each hydrogen, alkyl, alkenyl or alkynyl; R.sup.5 is hydrogen or a carboxy-protecting group; R.sup.a is hydrogen or a group of formula and --OR.sup.6 ; R.sup.6, R.sup.6a and R.sup.6b are each hydrogen, a hydroxy-protecting group, alkyl, alkanesulfonyl, halogenated alkanesulfonyl or arylsulfonyl] and their salts and esters have the ability to inhibit the synthesis of cholesterol, and can thus be used for the treatment and prophylaxis of hypercholesterolemia and of various cardiac disorders.Type: GrantFiled: December 28, 1993Date of Patent: September 19, 1995Assignee: Sankyo Company, LimitedInventors: Hiroshi Kogen, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Nobufusa Serizawa, Kiyoshi Hamano
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Patent number: 5356918Abstract: Compounds of formula (I): ##STR1## wherein W represents an oxygen atom and X represents a group of formula --N(R.sup.1)--; R.sup.1 is hydrogen, alkyl or aralkyl; R.sub.2 and R.sup.3 are each hydrogen, alkyl, aralkyl, aryl or aromatic heterocyclic; R.sup.4 is hydrogen, alkyl or aralkyl; and A is alkylene which is optionally substituted by carboxy; and pharmaceutically acceptable salts and esters thereof, have a valuable vasodilatory activity.Type: GrantFiled: December 6, 1993Date of Patent: October 18, 1994Assignee: Sankyo Company, Ltd.Inventors: Sadao Ishihara, Fujio Saito, Takao Yoshioka, Hiroyuki Koike, Shigeki Miyake, Hiroshi Mizuno
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Patent number: 5298516Abstract: Compounds of formula (I): ##STR1## wherein W represents a sulfur atom and X represents a group of formula --N(R.sup.1)--, or W represents a group of formula --N(R.sup.1)-- and X represents a sulfur atom; R.sup.1 is hydrogen, alkyl or aralkyl; R.sup.2 and R.sup.3 are each hydrogen, alkyl, aralkyl, aryl or aromatic heterocyclic; R.sup.4 is hydrogen, alkyl or aralkyl; and A is alkylene which is optionally substituted by carboxy; and pharmaceutically acceptable salts and esters thereof, have a valuable vasodilatory activity.Type: GrantFiled: March 24, 1992Date of Patent: March 29, 1994Assignee: Sankyo Company, LimitedInventors: Sadao Ishihara, Fujio Saito, Takao Yoshioka, Hiroyuki Koike, Shigeki Miyake, Hiroshi Mizuno
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Patent number: 4838720Abstract: In a word processor which includes a display unit, a keyboard unit and a printer, the display unit and the printer being viewable by an operator of the keyboard unit, a paper guide device which is detachably mountable on the printer to feed paper to be printed on into the paper inlet slot of the printer has a flat guide surface against which the paper to be printed on can be positioned and a draft holding member which is movable between a first position which allows paper which is placed against the flat guide surface to be supplied into the paper inlet slot and a second position wherein draft paper placed against the flat guide surface will be supported thereon for viewing by an operator of the keyboard unit.Type: GrantFiled: December 18, 1987Date of Patent: June 13, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Masaaki Sakai, Sadao Ishihara, Touma Shimoyama
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Patent number: 4778790Abstract: Compounds of formula (I): ##STR1## (wherein A is an alkylene group substituted by an optionally substituted amino or heterocyclic group and optionally interrupted by an oxygen or sulfur atom, R.sup.2 is various organic groups, B is C.sub.1 -C.sub.2 alkylene and Y is sulfur or methylene) and pharmaceutically acceptable salts and esters thereof are valuable hypotensive agents which may be prepared by a condensation reaction of the corresponding compound having an amino group in place of the group A--CH(COOH)--NH--.Type: GrantFiled: April 3, 1987Date of Patent: October 18, 1988Assignee: Sankyo Company LimitedInventors: Hiroaki Yanagisawa, Sadao Ishihara, Akiko Ando, Hiroyuki Koike, Yasuteru Iijima
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Patent number: 4734410Abstract: Compounds of formula (I): ##STR1## (wherein R.sup.1 and R.sup.3 are organic groups, A is a direct bond, --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CO--CH.sub.2, --O--CH.sub.2 -- or --S--CH.sub.2 --, B is lower alkylene and n is 1-3) are valuable hypotensive agents which may be prepared by a condensation reaction of the corresponding compound having an amino group at the 3-position.Type: GrantFiled: October 9, 1986Date of Patent: March 29, 1988Assignee: Sankyo Company LimitedInventors: Hiroaki Yanagisawa, Sadao Ishihara, Akiko Ando, Takuro Kanazaki, Hiroyuki Koike, Yasuteru Iijima