Patents by Inventor Toru Doi
Toru Doi 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).
-
Patent number: 5684122Abstract: A transparent N-alkyl-substituted maleimide/olefin copolymer composite material is provided which comprises 100 parts by weight of an N-alkyl-substituted maleimide/olefin copolymer, and 0.1 to 100 parts by weight of phyllosilicate, the phyllosilicate being dispersed uniformly and finely in a matrix of the N-alkyl-substituted maleimide/olefin copolymer. A process for producing the N-alkyl-substituted maleimide/olefin copolymer composite material is also provided. The N-alkyl-substituted maleimide/olefin copolymer composite material is excellent in transparency, heat resistance, rigidity, and dimensional stability.Type: GrantFiled: April 5, 1996Date of Patent: November 4, 1997Assignee: Tosoh CorporationInventors: Hiroshi Inoue, Toru Doi
-
Patent number: 5580928Abstract: A resin composition is disclosed which comprises:(a) from 1 to 99% by weight of a maleimide-olefin copolymer comprising from 40 to 60 mol % of structural unit (I) shown below and from 60 to 40 mol % of structural unit (II) shown below and having a number-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 : ##STR1## wherein R.sup.1 is hydrogen or an alkyl having 1 to 6 carbon atoms, ##STR2## wherein R.sup.2 and R.sup.3 each is hydrogen or an alkyl having 1 to 6 carbon atoms; and(b) from 99 to 1% by weight of an acrylonitrile-styrene copolymer containing from 21 to 45% by weight of an acrylonitrile units. The composition is excellent in optical properties including transparency and low birefringence and in heat resistance and mechanical properties.Type: GrantFiled: November 17, 1995Date of Patent: December 3, 1996Assignee: Tosoh CorporationInventors: Toru Doi, Hiroshi Inoue
-
Patent number: 5548031Abstract: A process for producing a copolymer having succinimide units represented by general formula (I) is provided which comprises reaction of a copolymer constituted of 40-60 mole % of maleic anhydride units, 60-40 mole % of olefin units, and 0-20 mole % of another copolymerizable monomer units with an amine to convert the maleic anhydride units to the succinimide units, wherein the succinimide units are formed by ring-closing imidation in a slurry state in a poor solvent: ##STR1## where R.sub.1 is a hydrogen atom, or an alkyl or cycloalkyl group of 1 to 6 carbons. The copolymer has low yellowness and high transparency.Type: GrantFiled: November 14, 1994Date of Patent: August 20, 1996Assignee: Tosoh CorporationInventor: Toru Doi
-
Patent number: 5541259Abstract: Resin compositions having excellent heat resistance, izod impact strength, rigidity and dimensional resistance and the like, applied in the fields of the automobile, electric and electronic, and the like industries. The resin composition comprising: a) a resin in which 30 to 98 mole % of the component (I) are contained in the whole polymer and 70 to 2 mole % of the component (II) are contained in the whole polymer, its weight-average molecular weight converted into that of polystyrene being 1.times.10.sup.3 or more to 5.times.10.sup.6 or less, and b) an olefin resin; then the a)/b) content being 5/95 to 99/1 as a weight ratio, ##STR1## wherein R.sub.1 is an alkyl group having 1 to 18 carbon atom(s) or a cycloalkyl group having 3 to 12 carbon atoms; and ##STR2## wherein R.sub.2 is hydrogen or an alkyl group having 1 to 8 carbon atom(s), and R.sub.3 and R.sub.4 is an alkyl group having 1 to 8 carbon atoms.Type: GrantFiled: June 21, 1994Date of Patent: July 30, 1996Assignee: Tosoh CorporationInventor: Toru Doi
-
Patent number: 5536798Abstract: An optical material, comprising a resin composed of a polymer constituted of a first structural unit composed of at least one of the compounds represented by the formula (I), and of a second structural unit composed of at least one of the compounds represented by the formula (II), and having a weight-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 : ##STR1## where R.sub.1 denotes an alkyl group having 1 to 18 carbons or a cycloalkyl group having 3 to 8 carbons; ##STR2## where R.sub.2 denotes hydrogen or an alkyl group having 1 to 8 carbons, and R.sub.3 and R.sub.4 denote respectively an alkyl group having 1 to 8 carbons. The optical material is superior in transparency, heat resistance, surface hardness, mechanical strength, and other properties.Type: GrantFiled: December 15, 1994Date of Patent: July 16, 1996Assignee: Tosoh CorporationInventors: Toru Doi, Tomohiro Ishikawa
-
Patent number: 5512634Abstract: Resin compositions having excellent heat resistance, izod impact strength, rigidity and dimensional resistance and the like, applied in the fields of the automobile, electric and electronic, and the like industries. The resin composition comprising: a) a resin in which 30 to 98 mole % of the component (I) are contained in the whole polymer and 70 to 2 mole % of the component (II) are contained in the whole polymer, its weight-average molecular weight converted into that of polystyrene being 1.times.10.sup.3 or more to 5.times.10.sup.6 or less, and b) an olefin resin; then the a)/b) content being 5/95 to 99/1 as a weight ratio, ##STR1## wherein R.sub.1 is an alkyl group having 1 to 18 carbon atom(s) or a cycloalkyl group having 3 to 12 carbon atoms; and ##STR2## wherein R.sub.2 is hydrogen or an alkyl group having 1 to 8 carbon atom(s), and R.sub.3 and R.sub.4 is an alkyl group having 1 to 8 carbon atoms.Type: GrantFiled: June 21, 1994Date of Patent: April 30, 1996Assignee: Tosoh CorporationInventor: Toru Doi
-
Patent number: 5424380Abstract: Resin compositions having excellent heat resistance, izod impact strength, rigidity and dimensional resistance and the like, applied in the fields of the automobile, electric and electronic, and the like industries. The resin composition comprising: a) a resin in which 30 to 98 mole % of the component (I) are contained in the whole polymer and 70 to 2 mole % of the component (II) are contained in the whole polymer, its weight-average molecular weight converted into that of polystyrene being 1.times.10.sup.3 or more to 5.times.10.sup.6 or less, and b) an olefin resin; then the a)/b) content being 5/95 to 99/1 as a weight ratio, ##STR1## wherein R.sub.1 is an alkyl group having 1 to 18 carbon atom(s) or a cycloalkyl group having 3 to 12 carbon atoms; and ##STR2## wherein R.sub.2 is hydrogen or an alkyl group having 1 to 8 carbon atom(s), and R.sub.3 and R.sub.4 is an alkyl group having 1 to 8 carbon atoms.Type: GrantFiled: October 29, 1992Date of Patent: June 13, 1995Assignee: Tosoh CorporationInventor: Toru Doi
-
Patent number: 5306794Abstract: The present invention provides a method of producing a maleimide-olefin copolymer having excellent transparency. The production method employs precipitation polymerization for producing a maleimide-olefin copolymer by radical polymerization of a maleimide and an olefin.Type: GrantFiled: September 29, 1992Date of Patent: April 26, 1994Assignee: Tosoh CorporationInventors: Toru Doi, Yoshihiko Sugiura
-
Patent number: 5238972Abstract: A foamed plastic is provided which is excellent in heat resistance and mechanical strength. The foamed plastic is produced by foaming a resin which comprises an N-alkyl-substituted maleimide unit in an amount of 30 to 98 mol % and an olefin unit in an amount of 70 to 2 mol % of the entire polymer, and has a weight-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 in terms of polystrene.Type: GrantFiled: September 29, 1992Date of Patent: August 24, 1993Assignee: Tosoh CorporationInventor: Toru Doi
-
Patent number: 5208307Abstract: An optical material, comprising a resin composed of a polymer constituted of 10 of 95 mol %, based on the polymer, of a first structural unit represented by the formula (I) and 90 to 5 mol %, based on the polymer, of a second structural unit represented by the formula (II), and having a weight-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 in polystyrene equivalent: ##STR1## The optical material has a Tg value not less than 120.degree. C., a light transmittance value not less than 85%, and a pencil hardness not lower than H.Type: GrantFiled: August 19, 1991Date of Patent: May 4, 1993Assignee: Tosoh CorporationInventors: Toru Doi, Tomohiro Ishikawa
-
Patent number: 5104428Abstract: A separation membrane comprising a resin being constituted of the repeating unit represented by the general formula (I) and having a number average molecular weight of not less than 1.times.10.sup.3 in polystyrene equivalent: ##STR1## wherein R.sub.1 denotes an alkyl group of 1-20 carbons, a fluoroalkyl group of 1-20 carbons, or a group represented by the general formula: --(--X--).sub.m --(SiR.sub.2 R.sub.3 --).sub.n --R.sub.4, or --(--X--).sub.m --(--SiR.sub.2 R.sub.3 O--).sub.n --SiR.sub.4 R.sub.5 R.sub.6 (wherein X is an alkylene group of 1-8 carbons or a phenylene group of 6-12 carbons; m is 0 or 1; n is an integer of 1-20; R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are respectively a group, having 1-8 carbons, selected from an alkyl group, a cycloalkyl group, a phenyl group, an alkoxyl group, and a fluoroalkyl group, and may be the same with or different from each other).Type: GrantFiled: July 2, 1991Date of Patent: April 14, 1992Assignee: Tosoh CorporationInventors: Toru Doi, Tomohiro Ishikawa, Takayuki Otsu, Akikazu Matsumoto
-
Patent number: 4181749Abstract: Surimi suitable for the production of Kamaboko (fish meat jelly) can be obtained at high yield by compounding (1) a salt-soluble protein fraction prepared by mincing fish meat taken from raw fish into a sol-form, water-washing the resulting sol and dewatering and then subjecting the same to a salt-solution treatment, with (2) heat-denaturated water-soluble protein fractions prepared by heating to coagulation water-soluble protein fractions leached out in the water-wash and salt-solution treatment.Type: GrantFiled: February 21, 1978Date of Patent: January 1, 1980Assignee: Snow Band Milk Products Co., Ltd.Inventors: Hiroshi Niki, Tuneo Katou, Eiki Deya, Toru Doi, Kenkichi Ahiko, Hiromichi Hayashi
-
Patent number: 4118517Abstract: A method for preparing a fish meat powder capable of forming KAMABOKO is disclosed. The method involves forming a slurry of fish meat in a neutral buffer solution containing divalent metal ions and polyvalent weak-acid anions. The anions are present in an amount sufficient to sequester the metal ions. The slurry is converted to a fish meat powder by spray-drying.Type: GrantFiled: June 24, 1977Date of Patent: October 3, 1978Assignee: Snow Brand Milk Products Co. Ltd.Inventors: Hiroshi Niki, Eiki Deya, Toru Doi, Seiichiro Igarashi, Hiromichi Hayashi
-
Patent number: 4062409Abstract: The fish meat slurry which is obtained by finely mincing fresh fish meat or frozen ground fish meat (frozen SURIMI) in conjunction with a water-soluble protein and converting the resulting blend into the form of slurry has viscosity low enough to be easily spray dried into fish meat powder.Type: GrantFiled: July 19, 1976Date of Patent: December 13, 1977Assignee: Snow Brand Milk Products, Co., Ltd.Inventors: Hiroshi Niki, Eiki Deya, Toru Doi, Kenkichi Ahiko, Hiromichi Hayashi
-
Patent number: 3959517Abstract: A method is disclosed for preparing a fish meat powder from a low viscosity slurry by spray-drying. An acid which decomposes or volatilizes at the spray-drying temperature is added to the slurry to lower the viscosity.Type: GrantFiled: March 13, 1975Date of Patent: May 25, 1976Assignee: Snow Brand Milk Products Co., Ltd.Inventors: Hiroshi Niki, Eiki Deya, Toru Doi, Seiichiro Igarashi, Kenkichi Ahiko, Hiromichi Hayashi
-
Patent number: 3955011Abstract: This invention relates to a method of manufacturing fish meat powder which, on being blended with suitable amounts of water and table salt, exhibits the same degree of ability to make KAMABOKO as fresh fish meat and which is capable of retaining the ability to make KAMABOKO for a long period of time.Type: GrantFiled: February 6, 1975Date of Patent: May 4, 1976Assignee: Snow Brand Milk Products Co. Ltd.Inventors: Hiroshi Niki, Toru Doi, Seiichiro Igarashi, Toshiro Kanauchi