Patents by Inventor Haruo Omura
Haruo Omura 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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Publication number: 20150376298Abstract: The present invention provides a novel modified nanocellulose suitable for surface modification of nanocellulose or introduction of functional groups into nanocellulose, and a resin composition comprising the modified nanocellulose. More specifically, the present invention provides a modified nanocellulose in which a portion of the hydroxyl groups of cellulose constituting nanocellulose is substituted with at least one substituent represented by formula (1), and a resin composition comprising the modified nanocellulose and a resin.Type: ApplicationFiled: January 31, 2014Publication date: December 31, 2015Inventors: Fumiaki Nakatsubo, Haruo Omura, Hiroyuki Yanao
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Patent number: 8003560Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on the support, the heat-sensitive recording layer containing dye precursor-containing composite particles and a developer, the dye precursor-containing composite particles being obtained by dissolving a solute containing a dye precursor in a solvent containing a polyvalent isocyanate compound-containing polymerization component, emulsifying and dispersing the obtained solution in an aqueous medium, and then performing a polymerization reaction of the polyvalent isocyanate compound-containing polymerization component in the presence of polyethyleneimine having a molecular weight of 200 to 1,500. Also disclosed is a method of producing such a heat-sensitive recording material.Type: GrantFiled: March 28, 2008Date of Patent: August 23, 2011Assignee: Oji Paper Co., Ltd.Inventors: Masatoshi Fujino, Haruo Omura, Kenji Muto
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Publication number: 20100087317Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on the support, the heat-sensitive recording layer containing dye precursor-containing composite particles and a developer, the dye precursor-containing composite particles being obtained by dissolving a solute containing a dye precursor in a solvent containing a polyvalent isocyanate compound-containing polymerization component, emulsifying and dispersing the obtained solution in an aqueous medium, and then performing a polymerization reaction of the polyvalent isocyanate compound-containing polymerization component in the presence of polyethyleneimine having a molecular weight of 200 to 1,500. Also disclosed is a method of producing such a heat-sensitive recording material.Type: ApplicationFiled: March 28, 2008Publication date: April 8, 2010Applicant: OJI PAPER CO., LTD.Inventors: Masatoshi Fujino, Haruo Omura, Kenji Muto
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Patent number: 5804528Abstract: A thermosensitive recording material with a high resistance to fogging has a thermosensitive colored image-forming layer formed on a support and includes at least one colorless dye precursor, a color-developing agent and a binder, the dye precursor being contained in a plurality of fine solid composite particles prepared by dissolving a solute including the dye precursor in a solvent which includes a polymerization component including a polyvalent isocyanate compound; emulsifying the resultant solution in an aqueous medium; and subjecting the aqueous emulsion to a polymerization reaction to thereby form the fine solid composite particles in which the dye precursor is solid-dissolved in a solid thermoplastic resin matrix formed from a resultant polyurea or polyurethane polyurea resin.Type: GrantFiled: November 19, 1996Date of Patent: September 8, 1998Assignee: Oji Paper Co., Ltd.Inventors: Yasuyuki Aoki, Tomotsugu Takahashi, Akira Maeta, Rie Harunaga, Haruo Omura, Satoshi Fukui
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Patent number: 5478793Abstract: A pressure sensitive recording material utilizing a color forming reaction between a colorless or light-colored basic dye and a color acceptor, and in which (1) a basic dye-containing layer and color acceptor-containing layer are formed on one surface of different substrates respectively, (2) a basic dye-containing layer and color acceptor-containing layer are formed on one surface and the other surface of a same substrate respectively, (3) a basic dye-containing layer and color acceptor-containing layer are superposed on one surface of a substrate or (4) a layer containing both basic dye and color acceptor is formed on one surface of a substrate, the pressure sensitive recording material being characterized in that the basic dye is at least one diarylmethane compound represented by the formula (1) given below, the basic dye being enclosed in synthetic high polymer microcapsules having a mean particle size of 3 to 15 .mu.m and an average film thickness of 0.1 to 0.7 .mu.Type: GrantFiled: September 9, 1993Date of Patent: December 26, 1995Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Tetsuo Tsuchida, Yasuji Koga, Haruo Omura, Masato Tanaka, Nobuhisa Danou
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Patent number: 5372917Abstract: The present invention provides a recording material utilizing a reaction between a colorless or light-colored dye precursor and a color developer capable of forming a color upon coming into contact with the dye precursor, the recording material being characterized in that the material comprises at least one compound serving as the dye precursor and represented by the formula (1), and an acidic substance serving as the color developer ##STR1## wherein R.sub.1 to R.sub.6, p and q are defined in the specification. At least one selected from the group consisting of phenolic compounds of the formulae (10), (11) and (12) and phenolic resin having a partial structure of the formula (13) can be used, as required, to further improve the color forming properties and change the color of recorded images from reddish purple or purple to blue or dark blue.Type: GrantFiled: June 29, 1993Date of Patent: December 13, 1994Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Tetsuo Tsuchida, Tatsuya Meguro, Takaaki Kouro, Haruo Omura
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Patent number: 5212145Abstract: A heat sensitive recording material having a recording layer formed on a substrate and containing a colorless or light-colored basic dye and a color acceptor, the heat sensitive recording material being characterized in that at least one ethyleneimine derivative of the following formula (1) is contained in the recording layer as a preservability improving agent for record images ##STR1## wherein R.sub.1 is direct bond, --O--, --S--, --SO.sub.2 -- or C.sub.1 .about.C.sub.6 alkylene, R.sub.2 and R.sub.3 are each C.sub.1 .about.C.sub.4 alkyl, C.sub.1 .about.C.sub.4 alkoxyl or halogen atom, m and n are each zero or an integer of 1 to 4.Type: GrantFiled: July 23, 1992Date of Patent: May 18, 1993Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Tetsuo Tsuchida, Yasuji Koga, Haruo Omura, Yoshihiro Shimizu, Shuji Yoda
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Patent number: 4898941Abstract: A process for preparing a diphenylalkene derivative of the formula [II] ##STR1## which comprises oxidizing a diphenylalkanoic acid derivative of the formula [I] ##STR2## wherein R.sub.1 and R.sub.2 are each substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aralkyl or substituted or unsubstituted aryl, R.sub.1 and R.sub.2 may form a heteroring together theirwith or with an adjacent benzene ring, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are each hydrogen atom, halogen atom, substituted or unsubstituted alkyl, substituted or unsubstituted hydroxyl or substituted or unsubstituted amino, R.sub.12 and R.sub.13 are each hydrogen atom or substituted or unsubstituted alkyl, X is carboxyl, amide, ester or halide thereof.Type: GrantFiled: August 11, 1987Date of Patent: February 6, 1990Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Nobuo Kanda, Haruo Omura, Yukihiro Abe, Mitsuru Kondo
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Patent number: 4536220Abstract: A new fluoran derivative useful as a colorless chromogenic material has the following formula: ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, X and Y have the same meaning as defined hereinbefore.Type: GrantFiled: December 19, 1983Date of Patent: August 20, 1985Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Mitsuru Kondo, Hiroshi Iwasaki, Haruo Omura, Nobuo Kanda
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Patent number: 4524373Abstract: A new fluoran derivative useful as a colorless chromogenic material has the general formula: ##STR1## wherein R.sub.1, R.sub.2, X, Y and Z have the same meaning as defined hereinbefore.Type: GrantFiled: February 17, 1983Date of Patent: June 18, 1985Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Mitsuru Kondo, Hiroshi Iwasaki, Nobuo Kanda, Masayuki Omatsu, Haruo Omura
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Patent number: 4423091Abstract: The method of making microcapsules comprises performing polycondensation for producing aminoaldehyde resin in an aqueous dispersion including particles of hydrophobic core material in the presence of cation-modified polyvinyl alcohol to form aminoaldehyde resin microcapsules walls around said particles of hydrophobic core material.Type: GrantFiled: December 7, 1981Date of Patent: December 27, 1983Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Hiroshi Iwasaki, Shinsuke Irii, Haruo Omura