Patents by Inventor Naoshi Imaki
Naoshi Imaki 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: 5626910Abstract: A process for producing a surface-modified molded product of synthetic resin, which comprises contacting a fluorine-containing gas to the surface of a molded product of synthetic resin and then contacting a polymerizable monomer to form a new polymer layer on the surface of the molded product.Type: GrantFiled: January 27, 1995Date of Patent: May 6, 1997Assignee: Mitsubishi Chemical CorporationInventors: Yasuo Tanabe, Koshi Sasaki, Hidehiko Ohara, Naoshi Imaki
-
Patent number: 5484651Abstract: A fluorine-containing, polyolefin fiber non-woven fabric having enhanced resistance to degradation when exposed to a potassium hydride solution is produced by exposing a polyolefin fiber non-woven fabric to a gaseous atmosphere comprising F.sub.2 and O.sub.2 gases in certain volumetric ratios.Type: GrantFiled: June 2, 1994Date of Patent: January 16, 1996Assignee: Mitsubishi Chemical CorporationInventors: Koshi Sasaki, Hidehiko Ohara, Naoshi Imaki
-
Patent number: 5370798Abstract: An agent for capturing metal ions, which consists essentially of a cyclic inulooligosaccharide having from 6 to 8 molecules of fructose bonded by .beta.-2,1 bonds to form a cyclic structure, wherein hydroxyl groups may all or partially be alkylated.Type: GrantFiled: September 29, 1993Date of Patent: December 6, 1994Assignee: Mitsubishi Kasei CorporationInventors: Takao Uchiyama, Naoshi Imaki, Yuki Takuma, Masato Aiura, Eri Hosono
-
Patent number: 4968816Abstract: 3,4-Dihydroxytetrahydrofuran carbonate of the structural formula: ##STR1## and a Process for the Production thereof.Type: GrantFiled: February 16, 1989Date of Patent: November 6, 1990Assignee: Mitsubishi Kasei CorporationInventors: Naoshi Imaki, Isao Kawakami
-
Patent number: 4963684Abstract: A process for preparing cotarnine is provided which comprises oxidizing the amino group of a tetrahydroisoquinoline compound represented by the following formula (I): ##STR1## to convert said compound into a dihydroisoquinolinium salt represented by the following formula (II): ##STR2## wherein A.sup.- represents an anion, and then hydrolyzing said dihydroisoquinolinium salt.Type: GrantFiled: February 7, 1989Date of Patent: October 16, 1990Assignee: Mitsubishi Kasei CorporationInventors: Yoshiharu Morita, Naoshi Imaki, Tadashi Shirasaka, Tetsuro Shimpuku
-
Patent number: 4939277Abstract: A tetrahydrofuran derivative of the formula: ##STR1## wherein each of R.sub.1 and R.sub.2 is an alkyl group having from 1 to 20 carbon atoms, and the two alkoxy groups OR.sub.1 and OR.sub.2 take a cis form to the plane of the tetrahydrofuran ring.Type: GrantFiled: February 7, 1989Date of Patent: July 3, 1990Assignee: Mitsubishi Kasei CorporationInventors: Naoshi Imaki, Isao Kawakami, Sinichiro Nakamura
-
Patent number: 4904787Abstract: A method for producing a 2,4-dihydroxyquinoline derivative of the formula: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom, and its tautomer, which comprises cyclizing an aryl malonic acid amide ester derivative of the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, and R.sup.5 is a lower alkyl group, by means of polyphosphoric acid.Type: GrantFiled: April 4, 1988Date of Patent: February 27, 1990Assignee: Mitsubishi Kasei CorporationInventors: Naoshi Imaki, Yuki Takuma, Mari Oishi
-
Patent number: 4769480Abstract: There is provided a novel benzylamine derivative of the formula I: ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group, X represents a hydrogen atom, a methyl group or a tosyl group, and Y represents a hydrogen atom, a methyl group or ##STR2## in which R.sup.2 and R.sup.3 being identical or different from each other represent independently a lower alkyl group.Type: GrantFiled: August 15, 1986Date of Patent: September 6, 1988Assignee: Mitsubishi Chemical Industries LimitedInventors: Yoshiharu Morita, Naoshi Imaki, Hisao Takayanagi, Tadashi Shirasaka, Tetsuro Shimpuku, Yuki Takuma, Mari Oishi
-
Patent number: 4760145Abstract: A tetrahydroisoquinoline derivative represented by formula: ##STR1## wherein R.sup.1 represents hydrogen or methyl and X.sup.1, X.sup.2, Y.sup.1 and Y.sup.2 are defined as follows:(1) X.sup.1 represents --OH, ##STR2## or OR.sup.2 wherein R.sup.2 represents lower alkyl when X.sup.2, Y.sup.1 and Y.sup.2 represent hydrogen(2) X.sup.1 and X.sup.2 together form oxo (.dbd.O), when Y.sup.1 and Y.sup.2 represent hydrogen or(3) Y.sup.1 and Y.sup.2 together form oxo (.dbd.O), when X.sup.1 and X.sup.2 represent hydrogen which is useful as an intermediate in preparation of Cotarnine.Type: GrantFiled: August 28, 1986Date of Patent: July 26, 1988Assignee: Mitsubishi Chemical Industries LimitedInventors: Yoshiharu Morita, Naoshi Imaki, Hisao Takayanagi, Tadashi Shirasaka, Tetsuro Shimpuku, Yuki Takuma, Mari Oishi
-
Patent number: 4746747Abstract: There is provided a novel anisole derivative represented by the following formula (I): ##STR1## wherein A to D are defined as follows: (1) A, B and C are each a hydrogen atom, and D represents --OH, a halogen atom, --CO.sub.2 R.sup.1 of which R.sup.1 represents a lower alkyl group, --SO.sub.2 R.sup.2 of which R.sup.2 represents a lower alkyl group, or ##STR2## or (2) A and C are each a hydrogen atom, B is --OH, and D represents --CO.sub.2 R.sup.3 of which R.sup.3 represents a lower alkyl group; or(3) A is a hydrogen atom, B and C form an oxo group .dbd.O together, and D represents --CO.sub.2 R.sup.4 of which R.sup.4 represents a lower alkyl group; or(4) B and C are each a hydrogen atom, D is a halogen atom, and A represents --CHO.Type: GrantFiled: August 28, 1986Date of Patent: May 24, 1988Assignee: Mitsubishi Chemical Industries LimitedInventors: Yoshiharu Morita, Naoshi Imaki, Hisao Takayanagi, Yuki Takuma, Tadashi Shirasaka
-
Patent number: 4667047Abstract: A method for producing monosilane and a tetraalkoxysilane by disproportionation of an alkoxysilane, which comprises contacting an alkoxysilane having the formula:H.sub.n Si(OR).sub.4-n (I)wherein R is a lower alkyl group and n is an integer of 1 to 3, with a catalyst selected from the group consisting of a platinum group metal, a compound of a platinum group metal, an anion exchange resin, alumina, silica alumina and zeolite containing a metal of Group Ia of the periodic table.Type: GrantFiled: May 7, 1986Date of Patent: May 19, 1987Assignee: Mitsubishi Chemical Industries LimitedInventors: Naoshi Imaki, Junzo Haji, Yoko Misu
-
Patent number: 4594438Abstract: A process for preparing 2,2-dimethyl-2,3-dihydro-7-hydroxybenzofuran, which comprises(a) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl)cyclohexanone in the presence of a dehydrohalogenation agent, hydroylzing the resulting 2-isobutenyl-6-halophenol in the presence of a copper compound catalyst and an alkali, and cyclizing the resulting 1,2-dihydroxy-3-isobutenylbenzene in the presence of a cyclization catalyst,(b) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl) cyclohexanone in the presence of a dehydrohalogenation agent, reacting the resulting 2,2-dimethyl-2,3-dihydro-7-halobenzofuran with at least one metal selected from the group consisting of lithium, sodium and magnesium, oxidizing the resulting metal compound, and hydrolyzing the oxidized metal compound, or(c) heating a 2,2-dihalo-6-halo-6-(1-haloisobutyl) cyclohexanone in a carboxylic acid in the presence of a salt of a carboxylic acid.Type: GrantFiled: October 22, 1984Date of Patent: June 10, 1986Assignee: Mitsubishi Chemical Industries, Ltd.Inventors: Naoshi Imaki, Takemi Nakanome
-
Patent number: 4590319Abstract: A method for the partial hydrogenation of conjugated dienes, characterized in that a chain conjugated diene in which the conjugated two double bonds have different numbers of substituents, is hydrogenated at a temperature of not higher than 50.degree. C. in the presence of a catalyst composed essentially of (1) a cobalt compound, (2) an organophosphine compound and (3) an aluminum compound, to obtain a partially hydrogenated product wherein as between said conjugated two double bonds, the one having a greater number of substituents is selectively hydrogenated.Type: GrantFiled: February 26, 1985Date of Patent: May 20, 1986Assignee: Mitsubishi Chemical Industries, Ltd.Inventors: Naoshi Imaki, Yoshiko Fukumoto
-
Patent number: 4499306Abstract: A 2,2-dihalo-6-halo-6-(1-haloisobutyl)cyclohexanone represented by the general formula ##STR1## where each of X.sup.1, X.sup.2, X.sup.3 and X.sup.4 is a halogen atom.Type: GrantFiled: March 16, 1983Date of Patent: February 12, 1985Assignee: Mitsubishi Chemical Industries Ltd.Inventors: Naoshi Imaki, Takemi Nakanome
-
Patent number: 4387061Abstract: This invention relates to an improved process for producing certain phosphinic acid derivatives of aminothio methyl carbamate by reacting N-(halothio)phosphinic acid amide and a carbamate compound in the presence of a cupric catalyst in high yields. These compounds are known to be useful as insecticides.Type: GrantFiled: August 20, 1981Date of Patent: June 7, 1983Assignee: Mitsubishi Chemical Industries Ltd.Inventors: Tetsumi Suzuki, Naoshi Imaki, Takemi Nakanome