Patents by Inventor Masayuki Nakajima
Masayuki Nakajima 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: 6194498Abstract: A composition of matter is provided comprising a mixture of: (i) at least one alkyl aromatic sulfonamide containing from 6 to 40 carbon atoms total and at least six carbon atoms in the alkyl group; and (ii) at least one polyether aromatic sulfonamide different from (i) and having the following structure: Q—[(OCH(R)CH(R))y—NH—SO2—A]z. Q is selected from the following structures: A is an aromatic group containing from 6 to 39 carbon atoms; L is an alkyl group containing from 1 to 20 carbon atoms or A—SO2—NHCH(CH3)CH2—; R is independently hydrogen or linear or branched alkyl groups having from 1 to 4 carbon atoms; x ranges from 0 to 40; y ranges from 2 to 40; z ranges from 1 to 3; and a ranges from 0 to 40. Also provided is a resinous composition comprising a film-forming material and a plasticizer, where the plasticizer comprises (i) or the mixture of (i) and (ii) above.Type: GrantFiled: August 10, 1999Date of Patent: February 27, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Lawrence G. Anderson, Tien-Chieh Chao, Masayuki Nakajima, Umesh Chandraprasad Desai
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Patent number: 6187896Abstract: An aromatic polycarbonate composition which has excellent thermal stability and maintains high transparency and a satisfactory hue even at high temperatures. The aromatic polycarbonate composition comprises: a polycarbonate obtained by reacting at least one aromatic dihydroxy compound with a compound capable of incorporating a carbonate bond; and a phosphorus compound represented by the following formula (1): wherein the eight R′s may be the same or different and each represents a hydrogen atom or an optionally substituted, aliphatic or aromatic, univalent group having 1 to 18 carbon atoms.Type: GrantFiled: December 21, 1999Date of Patent: February 13, 2001Assignees: Mitsubishi Gas Chemical Company, Inc., Mitsubishi Chemical CorporationInventors: Masayuki Nakajima, Katsushige Hayashi, Michio Kawai, Junji Takano
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Patent number: 5674660Abstract: An electrodepositable photoresist composition comprising an aqueous dispersion of: (a) a water-dispersible neutralized cationic polymeric material having a pendant unsaturation, (b) a nonionic unsaturated material and (c) a photoinitiator; characterized in that it can form smooth, thin and pinhole free coatings and further characterized in that the film is capable of being selectively insolubilized by patterned radiation exposure such that the unexposed portion of the film is soluble in dilute aqueous acid and the exposed portion is insoluble in said aqueous acid.Type: GrantFiled: June 30, 1994Date of Patent: October 7, 1997Assignee: PPG Industries, Inc.Inventors: Kurt G. Olson, Michael G. Sandala, Steven R. Zawacky, Charles F. Kahle, II, Masayuki Nakajima
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Patent number: 5652294Abstract: Disclosed are aqueous, single-component coating compositions that contain as the primary binder component a polyurea which is the reaction product of:(a) a polymeric component containing at least one polymer based on olefinically unsaturated compounds and containing isocyanate-reactive groups comprising primary amino groups and/or secondary amino groups, with the optional additional presence of hydroxyl groups; and(b) a polyisocyanate component containing polyisocyanate groups in amounts sufficient to provide an NCO/NH equivalent ratio of about 0.5:1 to 1:1.Type: GrantFiled: December 21, 1995Date of Patent: July 29, 1997Assignee: PPG Industries, Inc.Inventors: Robert E. Jennings, Soner Kilic, Masayuki Nakajima
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Patent number: 5652299Abstract: A water-based vacuum forming laminating adhesive includes an ionic water-dispersed polyurethane, a carbodiimide and/or an aziridine, and optionally a vinyl acetate polymer. The polyurethane is characterized by a high polydispersity index, which provides a combination of adhesion and thermal stability. The polyurethane is made by chain extending an isocyanate functional urethane prepolymer with polyamine and ketimine.Type: GrantFiled: September 20, 1996Date of Patent: July 29, 1997Assignee: PPG Industries, Inc.Inventors: Masayuki Nakajima, Richard L. Coalson, Kurt G. Olson, Umesh C. Desai
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Patent number: 5595859Abstract: An electrodepositable photoresist composition comprising an aqueous dispersion of: (a) a water-dispersible neutralized cationic polymeric material having a pendant unsaturation, (b) a nonionic unsaturated material and (c) a photoinitiator; characterized in that it can form smooth, thin and pinhole free coatings and further characterized in that the film is capable of being selectively insolubilized by patterned radiation exposure such that the unexposed portion of the film is soluble in dilute aqueous acid and the exposed portion is insoluble in said aqueous acid.Type: GrantFiled: June 7, 1995Date of Patent: January 21, 1997Assignee: PPG Industries, Inc.Inventors: Kurt G. Olson, Michael G. Sandala, Steven R. Zawacky, Charles F. Kahle, II, Masayuki Nakajima
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Patent number: 5457174Abstract: A process for preparing a polycarbonate which comprises performing a transesterification and a polycondensation reaction with a diarylcarbonate and dihydroxyaryl compound, in a reaction apparatus composed of stainless steel comprising at least 12% by weight of Ni, and at least 22% by weight of Cr, and having Fe as the remaining main component. A polycarbonate which has a good color, is stable to hydrolysis and resistant to heat-yellowing is the resulting product.Type: GrantFiled: July 21, 1994Date of Patent: October 10, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Katsushige Hayashi, Mitsuhiko Masumoto, Masayuki Nakajima, Takuya Hasaki, Masahiko Ishikawa, Atsushi Hirashima
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Patent number: 5236656Abstract: A method of injection blow molding a synthetic resin bellows product having root portions and crest portions, each of which has the axially sectional form of a circular arc, and incline portions therebetween, for example, a plastic bellows product such as a constant-velocity joint boot, a steering boot or the like. The method is capable of molding a product having a thickness uniform throughout, and particularly, root portions having little dimensional variations. The method involves firstly molding the parison root portions or the root portions plus their adjacent areas into substantially the same shape as those of a final product by injection molding during molding of a parison, and then blow molding only the crest portions and the incline portions to obtain the shape of the final product.Type: GrantFiled: September 18, 1991Date of Patent: August 17, 1993Assignee: Keeper Co., Ltd.Inventor: Masayuki Nakajima
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Patent number: 5221690Abstract: A method for increasing the choroidal blood flow which comprises administering to a subject in need of such increasing a 13,14-dihydro-15-keto-20-ethyl-prostaglandin F, a pharmaceutically acceptable salt thereof or a lower alkyl ester thereof.Type: GrantFiled: April 13, 1992Date of Patent: June 22, 1993Assignee: R-Tech Ueno Ltd.Inventors: Tetsuya Sugiyama, Satoru Tokuoka, Masayuki Nakajima, Ikuo Azuma
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Patent number: 5198787Abstract: A waveguide having a pair of quarter-wavelength impedance transformers and adapted to divide and combine microwaves. The pair of quarter-wavelength impedance transformers includes two strip transmission lines connected together at one end, two ground conductors each located adjacent to and spaced from a respective one of said strip transmission lines, each said ground conductor serving as a ground potential at least mutually to the adjacent strip transmission line, and a dielectric substrate supporting thereon said strip transmission lines and said ground conductors. The two strip transmission lines may be connected to each other at numerous positions by resistors.Type: GrantFiled: September 12, 1991Date of Patent: March 30, 1993Assignee: Tokimec, Inc.Inventors: Eiichi Sano, Masahito Asa, Masayuki Nakajima
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Patent number: 5150084Abstract: A distributed-line power divider comprising: a common port and n distributing ports adapted to be connected with respective external lines; and n impedance transformers disposed between the common port and the distributing ports and having a filter function. The filter function of the impedance transformers may be a low-pass filter, a high-pass filter or a band-pass filter.Type: GrantFiled: February 28, 1991Date of Patent: September 22, 1992Assignee: Tokimec, Inc.Inventors: Masahito Asa, Masayuki Nakajima
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Patent number: 5098974Abstract: An acrylic copolymer reaction product of a primary amine group-containing copolymerizable vinyl monomer and an ethylenically unsaturated copolymerizable monomer is disclosed. Further, pigment dispersions, including the copolymer reaction product, pigment, and a liquid carrier, are disclosed.Type: GrantFiled: October 30, 1989Date of Patent: March 24, 1992Assignee: PPG Industries, Inc.Inventors: Charles M. Kania, Gregory J. McCollum, Masayuki Nakajima
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Patent number: 4956310Abstract: A semiconductor memory device in accordance with the present invention comprises: a semiconductor substrate (1) of a first conductivity type; a charge storage region (6) and a bit line region (7) of a second conductivity type formed on a main surface of the substrate; highly doped regions (12a, 12b) of the first conductivity type formed respectively contiguous to only the bottom boundaries of the charge storage region (6) and the bit line region (7).Type: GrantFiled: October 5, 1988Date of Patent: September 11, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akira Tokui, Shinichi Sato, Akira Kawai, Masayuki Nakajima, Hiroji Ozaki, Masao Nagatomo
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Patent number: 4916404Abstract: A pair of iron magnetic poles are disposed at the exit of electrons of each of deflecting magnets in an electron storage ring, in which electrons are stored during a certain period of time while being rotated therein, for generating a magnetic field in the direction opposite to that generated by the deflecting magnets. The magnetic field generated by these iron magnetic poles compensates deviations of the orbit of electrons due to the magnetic fringe field of each of the deflecting magnets.Type: GrantFiled: June 24, 1988Date of Patent: April 10, 1990Assignees: Hitachi, Ltd., Nippon Telegraph and Telephone CorporationInventors: Koji Tsumaki, Masatsugu Nishi, Masashi Kitamura, Jyoji Nakata, Masayuki Nakajima
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Patent number: 4910249Abstract: An acrylic copolymer reaction product of a primary amine group-containing copolymerizable vinyl monomer and an ethylenically unsaturated copolymerizable monomer is disclosed. Further, pigment dispersions, including the copolymer reaction product, pigment, and a liquid carrier, are disclosed.Type: GrantFiled: May 2, 1988Date of Patent: March 20, 1990Assignee: PPG Industries, Inc.Inventors: Charles M. Kania, Gregory J. McCollum, Masayuki Nakajima
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Patent number: 4763182Abstract: A semiconductor memory device comprises a first conductivity type semiconductor substrate (1) formed thereon with a charge storage region (5) and a second conductivity type region (6) serving as a bit line, and first conductivity type highly concentrated regions (8, 11) higher in concentration than the semiconductor substrate (1) at least by one digit are formed to enclose the charge storage region (5) and the bit line region (6) respectively. Thus, potential barriers against electrons can be defined in interfaces between the highly concentrated region (8) and the charge storage region (5) and between the highly concentrated region (11) and the bit line region (6), thereby to prevent malfunction caused by incidence of radioactive rays such as alpha rays.Type: GrantFiled: December 12, 1986Date of Patent: August 9, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroji Ozaki, Shinichi Sato, Akira Tokui, Akira Kawai, Masayuki Nakajima, Masao Nagatomo
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Patent number: 4702796Abstract: The present invention is a method for fabricating a semiconductor device, wherein impurity is selectively diffused to surround a region (7) of a second conductivity type as a bit line formed on a semiconductor substrate (1), thereby forming an impurity diffused region (9) of a first conductivity type having high density and, by extending the impurity diffused region (9) in the element separating step to form a high density region of the first conductivity type having high density.Type: GrantFiled: November 14, 1986Date of Patent: October 27, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masayuki Nakajima, Shinichi Sato, Akira Tokui, Akira Kawai, Masao Nagatomo, Hiroji Ozaki
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Patent number: 4334274Abstract: A given picture is scanned to store picture cell data thereof into memory positions of a first memory device. Non-boundary signs are written into a second memory device at its memory positions corresponding to the memory positions, filled by the picture cell data, of the first memory device. Coordinate values of the boundary picture cell data in the first memory device are produced. Then, discrimination signs are obtained by comparing the coordinate values, and are written into the second memory device at the memory positions corresponding to the picture cells on the closed boundary. The discrimination signs stored in the second memory device are checked to determine whether each of the non-boundary signs corresponds to picture cell data inside or outside of the closed boundary.Type: GrantFiled: May 25, 1979Date of Patent: June 8, 1982Assignee: Kopia Kabushiki KaishaInventors: Takesi Agui, Masayuki Nakajima, Koichi Iwata