Patents by Inventor Masakazu Uekita
Masakazu Uekita 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: 4943471Abstract: A patterned thin film suitable for use in electric and electronic devices, prepared from a polymer or a mixture of the polymer and other known compounds capable of forming a thin film by LB technique, said polymer having linear recurring units wherein an organic group R.sup.1 having at least 2 carbon atoms and a valence of at least 2 is combined alternately with an organic group R.sup.2 having at least 2 carbon atoms and a valence of at least 2 through a bivalent group formed by a reaction of an acid group A containing a hetero atom and a basic group B containing a hetero atom, and wherein a hydrocarbon-containing group R.sup.3 having 10 to 30 carbon atoms which may contain a substituent group, is linked by covalent or ionic bond to said recurring units, the number of groups R.sup.3 being at least 2 per 10 recurring units.Type: GrantFiled: September 23, 1988Date of Patent: July 24, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji, Makoto Murata, Satoshi Mizunuma
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Patent number: 4911958Abstract: A liquid crystal device is disclosed wherein a pair of liquid crystal supporting plates each having a molecular alignment controlling film formed thereon through the Langmuir-Blodgett method singly orlaminatedly a monomolecular film having as a main component a polyamide compound having a long-chain alkyl substituent in its side chain and a property to overspread a surface of water to form a monomolecular film is oppositely held via a spacer which is adhered on the side on which the molecular alignment controlling film is formed, and a liquid crystal material is injected and held into the space produced between the films thus oppositely held to each other thereby to align the molecules of liquid crystal to the azimuth parallel to the dipping direction of the substrate. A liquid crystal device thus manufactured exhibits a uniform and indefective molecular alignment condition.Type: GrantFiled: November 25, 1988Date of Patent: March 27, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideaki Mochizuki, Tsuyoshi Uemura, Tooru Tamura, Hiroshi Satani, Masakazu Uekita, Makoto Murata
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Patent number: 4910293Abstract: An amphiphilic high polymer comprises a linear recurring unit containing at least divalent organic group (R.sub.1) having at least two carbon atoms, at least divalent organic group (R.sub.2) having at least two carbon atoms, and at least one C.sub.10-30 hydrocarbon-containing group (R.sub.3) which may have one or more substituent groups, said organic groups R.sub.1 and R.sub.2 being connected to each other by a divalent connecting group, and said hydrocarbon-containing group R.sub.3 being boned to said recurring unit by a covalent bond, and the method for producing the same comprises polycondensating a combination of monomers containing R.sub.1 and R.sub.2.Type: GrantFiled: October 11, 1988Date of Patent: March 20, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4907043Abstract: An electroluminescent device comprising a first electrode, a radiating layer adjacent to the first electrode, a second electrode and an organic thin film provided between the radiating layer and the second electrode, wherein the radiating layer is a polycrystalline thin film made of a II-IV compound. The provision of the organic thin film causes the electroluminescent device to have a high level of brightness, although it is driven at a low voltage. This application is a continuation of application Ser. No. 235,788 filed Aug. 22, 1988, now abandoned, which is a continuation of application Ser. No. 842,607 filed Mar. 21, 1986, now abandoned.Type: GrantFiled: February 21, 1989Date of Patent: March 6, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Yasunori Yoshioka
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Patent number: 4897461Abstract: An amphiphilic polyimide precursor having at least 70% by mole of the recurring unit of the formula (1): ##STR1## wherein R.sup.1 is a tetravalent group having at least 2 carbon atoms, R.sup.2 is a bivalent group having at least 2 carbon atoms, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are hydrogen atom or a monovalent group having 1 to 30 carbon atoms selected from an aliphatic group, an alicyclic group, an aromatic group, a group in which an aliphatic group is combined with an alicyclic group or an aromatic group, and their groups substituted by a halogen atom, nitro group, amino group, cyano group, methoxy group or acetoxyl group, provided that at least one, preferably at least two, of R.sup.3, R.sup.4, R.sup.5 and R.sup.Type: GrantFiled: June 29, 1988Date of Patent: January 30, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4868281Abstract: A polymer has a linear recurring unit in which a first organic group (R.sub.1) having at least two carbon atoms and a valence of at least three and a second organic group (R.sub.2) having at least two carbon atoms and a valence of at least two are bonded together alternatively through a divalent connecting group, and containing at least one hydrocarbon group (R.sub.3) having 10 to 30 carbon atoms which is linked to the recurring unit by an ionic bond and which may be substituted.Type: GrantFiled: June 19, 1987Date of Patent: September 19, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4839219Abstract: A thin film comprising a polymer having linear recurring units wherein an organic group R.sup.1 is combined alternately with an organic group R.sup.2 through a bivalent bonding group, wherein each of said group R.sup.1 and said group R.sup.2 has a valence of at least 2 and has at least 2 carbon atoms; each of said linear recurring units having at least one hydrocarbon-containing group R.sup.3 having 10 to 30 carbon atoms bonded with covalent bond, and a device having the thin film. The thin film of the invention is formed by building-up layers of the above polymer by LB technique, and the obtained film can be subjected to ring closure and to elimination of a known LB compound added as occasion demand by heat treatment to provide a thin film having a thickness of not more than 10,000 .ANG. and excellent heat resistance, chemical resistance and mechanical properties, and the device having the thin film is useful particularly as electric and electronic devices.Type: GrantFiled: May 19, 1987Date of Patent: June 13, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4822853Abstract: An amphiphilic polyimide precursor having at least 70% by mole of the recurring unit of the formula (1): ##STR1## wherein R.sup.1 is a tetravalent group having at least 2 carbon atoms, R.sup.2 is a bivalent group having at least 2 carbon atoms, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are hydrogen atom or a monovalent group having 1 to 30 carbon atoms selected from an aliphatic group, an alicyclic group, an aromatic group, a group in which an aliphatic group is combined with an alicyclic group or an aromatic group, and their groups substituted by a halogen atom, nitro group, amino group, cyano group, methoxy group or acetoxyl group, provided that at least one, preferably at least two, of R.sup.3, R.sup.4, R.sup.5 and R.sup.Type: GrantFiled: July 15, 1986Date of Patent: April 18, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4801420Abstract: A process for forming a built-up film with logic polymers whose film inherently cannot be readily obtained by LB technique comprises modifying the high polymers, and if required, further cyclizing the product partially or wholly. The produced thin films have extremely excellent heat resistance, good chemical resistance and mechanical characteristics and their thickness is so small that it is generally hardly attainable, that is, less than 10,000 .ANG., or if desired, 10 to 1000 .ANG..Type: GrantFiled: September 10, 1986Date of Patent: January 31, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventor: Masakazu Uekita
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Patent number: 4748273Abstract: Amphiphilic diacetylene compound having benzene ring. The compound can readily form a single crystal and is photopolymerizable. A stable monomolecular film or built-up film can be prepared from the diacetylene compound. The film is useful as various electronic materials and optoelectronic materials.Type: GrantFiled: December 2, 1985Date of Patent: May 31, 1988Assignee: Kanegafushi Kagaku Kogyo Kabushiki KaishaInventors: Kiyoshige Fukuda, Yasunori Yoshioka, Masakazu Uekita
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Patent number: 4740396Abstract: A process for forming a built-up thin film of a high polymer which is inherently difficult of film formation by the Langmuir-Blodgett process. A high polymer is modified so as to enable film formation by the Langmuir-Blodgett process by introducing a substituent group for imparting a hydrophobic nature to a recurring unit of the high polymer, and the thus-modified high polymer is mixed with a known Langmuir-Blodgett film compound for film formation by the Langmuir-Blodgett process. A high polymer used in the present invention includes linear recurring units each of which is composed of an at least divalent first organic group R.sub.1 having at least two carbon atoms and an at least divalent second organic group R.sub.2 having at least two carbon atoms, the first organic group R.sub.1 and the second organic group R.sub.2 being connected with each other by a divalent bonding group; and at least one hydrocarbon-containing group R.sub.Type: GrantFiled: February 3, 1987Date of Patent: April 26, 1988Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Hiroshi Awaji
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Patent number: 4571279Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: November 28, 1983Date of Patent: February 18, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4557784Abstract: A metal clad laminate is produced in continuous manner by impregnating a plurality of fibrous substrate with a curable liquid resin, combining said plurality of substrates together and simultaneously laminating a metal foil onto at least one side of said substrates, and curing the laminate. The improvement comprises the steps of applying an adhesive onto said metal foil to form a film and heating said film in situ continuously prior to step of laminating step of said metal foil.Type: GrantFiled: June 27, 1980Date of Patent: December 10, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Yasuo Fushiki, Masayuki Ooizumi
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Patent number: 4451317Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: June 2, 1982Date of Patent: May 29, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4372800Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: January 8, 1981Date of Patent: February 8, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4370386Abstract: An electrical laminate comprising layers of an unsaturated polyester resin-impregnated fibrous cellulosic substrate is disclosed. The substrate is preimpregnated with a mixture and/or a condensate of an aminoplast with a higher fatty derivative having at least one functional group capable of condensation with the methylol group of aminoplast. The laminate exhibits improved moisture resistance and punchability.Type: GrantFiled: September 15, 1980Date of Patent: January 25, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Yasuo Fushiki, Masaharu Abe
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Patent number: 4370191Abstract: An electrical laminate comprising layers of a resin impregnated fibrous substrate is disclosed. The resin has a glass transition point from about 20.degree. C. to 80.degree. C. and comprises a cured product of a mixture of an unsaturated polyester polymer and a cross-linking monomer. The laminate exhibits an improved punchability at a temperature not lower but not 20.degree. C. higher than the glass transition point of the resin.Type: GrantFiled: July 2, 1980Date of Patent: January 25, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masakazu Uekita, Masaharu Abe
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Patent number: 4336297Abstract: An electrical laminate comprising layers of a polyester resin-impregnated fibrous cellulosic substrate is disclosed. The substrate is preimpregnated with a nitrogen-containing composition having (a) an N-methylol or N-lower alkoxymethyl group attached to said nitrogen atom, and (b) an unsaturated group capable of copolymerizing with a cross-linking monomer present in the polyester resin.Type: GrantFiled: April 23, 1980Date of Patent: June 22, 1982Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasuo Fushiki, Masaharu Abe, Masakazu Uekita
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Patent number: 3994986Abstract: A method of producing cyclopentene comprising the steps of depolymerizing dicyclopentadiene to produce raw cyclopentadiene; feeding the raw cyclopentadiene to a distillation tower having an upper part cooled to a temperature near the boiling point of the cyclopentadiene and an outlet maintained at 35.degree. to 60.degree. C and a lower part at a temperature of 40.degree. to 150.degree. C; thereby to produce highly pure gaseous cyclopentadiene at the top outlet and impure components having high boiling point at the lower outlet which are removed continuously; mixing the highly pure cyclopentadiene obtained thereby with hydrogen and reacting in a first hydrogenation reactor using a palladium containing catalyst, then mixing the resulting product with hydrogen and reacting in a second hydrogenation reactor with a palladium containing catalyst; cooling the resulting product and separating the liquid phase from the gas phase and recirculating the gas phase for use in the hydrogenation reactions.Type: GrantFiled: April 14, 1975Date of Patent: November 30, 1976Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasushi Koto, Masakazu Uekita, Shoichi Matsumura, Yoshiaki Taguchi, Yutaka Takanoo