Patents by Inventor Satoshi Kanayama
Satoshi Kanayama 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: 7511089Abstract: An alkali metal or alkaline earth metal salt of sulfonic acid of polyphenylene ether oligomer is useful as a modifier for thermoplastic resins, typically as a flame retardant, compatibilizing agent or antistatic agent.Type: GrantFiled: September 8, 2005Date of Patent: March 31, 2009Assignees: Shin-Etsu Chemical Co., Ltd., Mitsubishi Gas Chemical Company, Inc.Inventors: Akinari Itagaki, Masaki Tanaka, Masaaki Yamaya, Takahiro Adachi, Yasumasa Norisue, Satoshi Kanayama
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Publication number: 20070232730Abstract: An alkali metal or alkaline earth metal salt of sulfonic acid of polyphenylene ether oligomer is useful as a modifier for thermoplastic resins, typically as a flame retardant, compatibilizing agent or antistatic agent.Type: ApplicationFiled: September 8, 2005Publication date: October 4, 2007Inventors: Akinari Itagaki, Masaki Tanaka, Masaaki Yamaya, Takahiro Adachi, Yasumasa Norisue, Satoshi Kanayama
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Patent number: 6762250Abstract: The present invention relates to a polycarbonate resin composition comprising (A) 100 parts by weight of a polycarbonate resin and (B) 0.001 to 20 parts by weight of a siloxane compound which is a polyorganosiloxane having such a structure that at least (1) an aromatic hydrocarbon group, (2) an aliphatic or aromatic organic group having at least one carboxylic acid ester linkage, ether linkage or mixture thereof, and (3) a phosphorus atom-containing group, are bonded to the silicon atoms therein.Type: GrantFiled: June 4, 2003Date of Patent: July 13, 2004Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Satoshi Kanayama, Kenichi Narita, Masaki Tamura
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Patent number: 6727294Abstract: A thermoplastic resin composition comprising: a transparent aromatic thermoplastic resin (a) and a copolyester resin (b) comprising at least two kinds of dicarboxylic acid moieties and one kind of diol moiety, 1 to 50 mol % of the dicarboxylic acid moieties being a naphthalenedicarboxylic acid moiety, the ratio of (a) to the combined amount of (a) and (b) being 55 to 99.99% by weight, and the ratio of (b) being 0.01 to 45% by weight.Type: GrantFiled: January 24, 2001Date of Patent: April 27, 2004Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Satoshi Kanayama, Tatsuhiko Hatakeyama, Shinya Miya, Kenichi Narita, Ken Honma
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Publication number: 20040054116Abstract: The present invention relates to a polycarbonate resin composition comprising (A) 100 parts by weight of a polycarbonate resin and (B) 0.001 to 20 parts by weight of a siloxane compound which is a polyorganosiloxane having such a structure that at least (1) an aromatic hydrocarbon group, (2) an aliphatic or aromatic organic group having at least one carboxylic acid ester linkage, ether linkage or mixture thereof, and (3) a phosphorus atom-containing group, are bonded to the silicon atoms therein.Type: ApplicationFiled: June 4, 2003Publication date: March 18, 2004Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Satoshi Kanayama, Kenichi Narita, Masaki Tamura
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Patent number: 6359028Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.Type: GrantFiled: August 26, 1999Date of Patent: March 19, 2002Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai
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Publication number: 20010034420Abstract: The present invention relates to a thermoplastic resin composition comprising:Type: ApplicationFiled: January 25, 2001Publication date: October 25, 2001Inventors: Ken Honma, Satoshi Kanayama, Tatsuhiko Hatakeyama, Kenichi Narita
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Publication number: 20010034419Abstract: A thermoplastic resin composition comprising:Type: ApplicationFiled: January 24, 2001Publication date: October 25, 2001Inventors: Satoshi Kanayama, Tatsuhiko Hatakeyama, Shinya Miya, Kenichi Narita, Ken Honma
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Patent number: 6040367Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of a compound containing oxymethylene unit, a compound containing oxymethylene unit having substituent or a cyclic ether compound having substituent.Type: GrantFiled: July 29, 1998Date of Patent: March 21, 2000Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Shinya Miya, Satoshi Kanayama
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Patent number: 5977206Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.Type: GrantFiled: January 12, 1998Date of Patent: November 2, 1999Assignee: Mitsubishi Engineering-Plastics Corp.Inventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai
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Patent number: 5948838Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of a compound containing oxymethylene unit, a compound containing oxymethylene unit having substituent or a cyclic ether compound having substituent.Type: GrantFiled: February 25, 1997Date of Patent: September 7, 1999Assignee: Mitsubishi Engineering-Plastics Corp.Inventors: Shinya Miya, Satoshi Kanayama
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Patent number: 5569566Abstract: A photoreceptor for electrophotography which comprises a conductive substrate and a photoconductive layer on the conductive substrate, a polycarbonate resin containing free chlorine of 2 ppm or below being contained in the photoconductive layer. No minute black spots generate and an excellent quality of picture is provided.Type: GrantFiled: April 14, 1995Date of Patent: October 29, 1996Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Satoshi Kanayama, Noriyoshi Ogawa, Jun Tajima
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Patent number: 5427998Abstract: A polycarbonate resin solution for forming a thermal-sublimating dye-receiving layer film, comprising a random copolycarbonate resin dissolved in an organic solvent, the resin having a structural unit represented by following formula (1) and a structural formula represented by following formula (2) or (3), the molar ratio of the structural unit represented by formula (1) to the structural unit represented by formula (2) or (3) being from 35/65 to 65/35, and having a number average molecular weight of from 5,000 to 50,000. ##STR1## wherein R.sup.1 to R.sup.12 each represents a hydrogen atom, a halogen atom, or an alkyl group having from 1 to 4 carbon atoms and in formula (1), A represents a straight chain, branched, or cyclic alkylidene group having from 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylene group, or a sulfonyl group.Type: GrantFiled: June 20, 1994Date of Patent: June 27, 1995Assignee: Mitsubishi Gas Chemical Co., Ltd.Inventors: Toshikazu Umemura, Satoshi Kanayama
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Patent number: 5428090Abstract: A polycarbonate derived from a novel dihydroxy compound having a triphenylamine structure, and a process for producing the polycarbonate are disclosed. The polycarbonate is obtained by reacting a dihydroxy compound having a triphenylamine structure described hereinbefore and a carbonate precursor, or by reacting the dihydroxy compound, a dihydric phenol compound and the carbonate precursor. The polycarbonate is useful as a plastic molding material or as a material for forming a polymer alloy with other resin.Type: GrantFiled: February 9, 1994Date of Patent: June 27, 1995Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Noriyoshi Ogawa, Toshiaki Takata, Satoshi Kanayama
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Patent number: 5418098Abstract: There is disclosed an electrophotographic photosensitive member comprising a conductive support and a photosensitive layer provided thereon, wherein the photosensitive layer contains a random copolymer having a structural unit represented by the following Formula (I): ##STR1## and a structural unit represented by the following Formula (II): ##STR2##Type: GrantFiled: June 25, 1992Date of Patent: May 23, 1995Assignee: Canon Kabushiki KaishaInventors: Shinya Mayama, Teigo Sakakibara, Noriko Ohtani, Katsumi Aoki, Noriyoshi Ogawa, Satoshi Kanayama
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Patent number: 5283142Abstract: The present invention provides an image-holding member which comprises an electroconductive support and a resin layer formed on the support, wherein the surface layer of the image-holding member contains a copolymer having the structure units represented by the formulas [I] and [II]: ##STR1## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO.sub.2 --; and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR2## where R.sub.5 is an alkylene or alkylidene group of 2 to 6 carbons; R.sub.6 and R.sub.7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] in an amount of from 0.1 to 50% by weight Of the total weight of the copolymer.Type: GrantFiled: February 19, 1992Date of Patent: February 1, 1994Assignee: Canon Kabushiki KaishaInventors: Shinya Mayama, Naoto Fujimura, Kiyoshi Sakai, Noriko Ohtani, Katsumi Aoki, Noriyoshi Ogawa, Satoshi Kanayama
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Patent number: 5021541Abstract: A polycarbonate resin comprising either a structural unit derived from a spiro ring-containing dihydric phenol, or such a structural unit and a structural unit derived from a dihydric phenol, and a process for producing the same. The polycarbonate resin has excellent flowability and moldability, and also improved optical properties (low refractive index, large Abbe number, etc.), and can be advantageously used in various fields, e.g., as a material for molded articles for optical use and other precision molded articles.Type: GrantFiled: February 15, 1990Date of Patent: June 4, 1991Assignee: Mitsubishi Gas Chemical Co., Ltd.Inventors: Mitsuhiko Masumoto, Satoshi Kanayama, Toshiaki Asoh, Teruo Kawahigashi
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Patent number: 4952664Abstract: A process for producing a weather-resistant polycarbonate resin by solution polymerization, of at least one dihydric phenol and phosgene in which a compound represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3, each represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group having from 1 to 20 carbon atoms, an alkoxy group having from 1 to 20 carbon atoms, or an aryl group having from 6 to 20 carbon atoms; m represents 1 or 2; and n represents an integer of from 1 to 10, is used as a terminator. The polycarbonate resin produced exhibits high weather resistance without suffering from volatilization.Type: GrantFiled: February 8, 1989Date of Patent: August 28, 1990Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Mitsuhiko Masumoto, Satoshi Kanayama
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Patent number: 4939231Abstract: A process for producing a polycarbonate resin having excellent heat stability from a dihydric phenol compound represented by the formula (1) shown below by an interfacial polymerization method wherein fatty acid represented by the formula (2), (3), (4) or (5) shown below is used as a terminator and as a polymerization catalyst, a quaternary ammonium salt is used, and after 5 to 40 minutes from the addition and emulsification of the polymerization catalyst, tertiary amine is added to cause polymerization. ##STR1## wherein all the symbols are the same as defined before.Type: GrantFiled: September 12, 1988Date of Patent: July 3, 1990Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Mituhiko Masumoto, Toshiaki Takata, Satoshi Kanayama