Patents by Inventor Takeshi Hihara
Takeshi Hihara 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: 9102138Abstract: Using an intermediate transfer body onto which a conductive recording liquid containing water that is ejected by heads is provided; and a potential applying unit which applies a potential which can electrolyze the water within the conductive recording liquid which is ejected from the heads and which temporarily bridges between the heads and the intermediate transfer body, the potential applying unit applies a potential between the intermediate transfer body and electrodes which are in contact with the recording liquid in supplying units which supply the recording liquid to the heads.Type: GrantFiled: November 1, 2012Date of Patent: August 11, 2015Assignee: Ricoh Company, Ltd.Inventors: Ryota Suzuki, Takeo Tsukamoto, Hisayoshi Ohshima, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Yuuma Usui, Takahiko Matsumoto, Takeshi Hihara
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Patent number: 9010915Abstract: Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.Type: GrantFiled: August 17, 2012Date of Patent: April 21, 2015Assignee: Ricoh Company, Ltd.Inventors: Yuuma Usui, Takeo Tsukamoto, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Ryota Suzuki, Hisayoshi Ohshima, Takahiko Matsumoto, Shigeo Takeuchi, Takeshi Hihara
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Patent number: 8944556Abstract: Disclosed is an image forming apparatus including a head configured to discharge an aqueous recording liquid onto a recording medium; and a coating unit configured to apply a process liquid onto the recording medium, wherein the process liquid is formed by emulsifying, by a first surfactant, water including a water-soluble polymer and a low polarity solvent which is not compatible with the water, wherein the water and the low polarity solvent are emulsified as a W/O emulsion in which the water is in a dispersed phase and the low polarity solvent is in a continuous phase.Type: GrantFiled: August 19, 2013Date of Patent: February 3, 2015Assignee: Ricoh Company, Ltd.Inventors: Takeshi Hihara, Yuuma Usui, Takeo Tsukamoto, Manabu Seo, Takahiko Matsumoto, Hiroyuki Yamashita, Hideomi Sakuma, Aino Hasegawa, Ryota Suzuki, Hisayoshi Ohshima, Shigeo Takeuchi, Mizuki Otagiri
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Patent number: 8871861Abstract: A silicone compound represented by the following Chemical Structure 1: wherein Y represents a substituted or non-substituted alkyl group having one to ten carbon atoms, X1, X2, and X3 independently represent methyl groups or any of Substituents A-1 to A-7, and l, m, and n are independently zero or an integer of from 1 to 6.Type: GrantFiled: May 1, 2012Date of Patent: October 28, 2014Assignee: Ricoh Company, Ltd.Inventors: Masayuki Shoshi, Soh Noguchi, Tetsurou Sasamoto, Takeshi Hihara, Tsuneo Kurotori
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Publication number: 20140240422Abstract: Using an intermediate transfer body onto which a conductive recording liquid containing water that is ejected by heads is provided; and a potential applying unit which applies a potential which can electrolyze the water within the conductive recording liquid which is ejected from the heads and which temporarily bridges between the heads and the intermediate transfer body, the potential applying unit applies a potential between the intermediate transfer body and electrodes which are in contact with the recording liquid in supplying units which supply the recording liquid to the heads.Type: ApplicationFiled: November 1, 2012Publication date: August 28, 2014Inventors: Ryota Suzuki, Takeo Tsukamoto, Hisayoshi Ohshima, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Yuuma Usui, Takahiko Matsumoto, Takeshi Hihara
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Publication number: 20140071196Abstract: Disclosed is an image forming apparatus including a head configured to discharge an aqueous recording liquid onto a recording medium; and a coating unit configured to apply a process liquid onto the recording medium, wherein the process liquid is formed by emulsifying, by a first surfactant, water including a water-soluble polymer and a low polarity solvent which is not compatible with the water, wherein the water and the low polarity solvent are emulsified as a W/O emulsion in which the water is in a dispersed phase and the low polarity solvent is in a continuous phase.Type: ApplicationFiled: August 19, 2013Publication date: March 13, 2014Applicant: RICHO COMPANY, LTD.Inventors: Takeshi Hihara, Yuuma Usui, Takeo Tsukamoto, Manabu Seo, Takahiko Matsumoto, Hiroyuki Yamashita, Hideomi Sakuma, Aino Hasegawa, Ryota Suzuki, Hisayoshi Ohshima, Shigeo Takeuchi, Mizuki Otagiri
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Publication number: 20130050363Abstract: Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.Type: ApplicationFiled: August 17, 2012Publication date: February 28, 2013Inventors: Yuuma Usui, Takeo Tsukamoto, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Ryota Suzuki, Hisayoshi Ohshima, Takahiko Matsumoto, Shigeo Takeuchi, Takeshi Hihara
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Publication number: 20120283378Abstract: A silicone compound represented by the following Chemical Structure 1: wherein Y represents a substituted or non-substituted alkyl group having one to ten carbon atoms, X1, X2, and X3 independently represent methyl groups or any of the following Substituents A-1 to A-7, and l, m, and n are independently zero or an integer of from 1 to 6, wherein R1 is a hydrogen atom, an alkyl group having one to four carbon atoms, or an alkoxy group having one to four carbon atoms, wherein R2 represents a single bonding or an alkylene group having one to four carbon atoms and R3 represents a single bonding or an alkyleneoxy group having one to four carbon atoms, wherein R4 and R5 independently represent hydrogen atoms or methyl groups,Type: ApplicationFiled: May 1, 2012Publication date: November 8, 2012Applicant: RICOH COMPANY, LTD.,Inventors: Masayuki SHOSHI, Soh Noguchi, Tetsurou Sasamoto, Takeshi Hihara, Tsuneo Kurotori
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Patent number: 5273679Abstract: A composition for acid gas absorbent comprising:(A): 99.99 to 70 wt % of a polyethylene glycol dimethyl ether composition represented by the following formula:CH.sub.3 O(C.sub.2 H.sub.4 O).sub.n CH.sub.3wherein n is an integer of 1 to 10; and,(B): 0.01 to 30 wt % of a compound containing at least one of an --NH-- group, a phenolic --OH group and an --S-- group in one molecule thereof but free from an alcoholic --OH group, is provided. More particularly, component B may be an amine, preferably a secondary amine, or a phenolic compound.Type: GrantFiled: April 12, 1991Date of Patent: December 28, 1993Assignees: Toho Kagaku Kogyo Co., Ltd., State Scientific-Research and Designing Institute for Nitrogen Industry and for Products of Organic SynthesisInventors: Takeshi Hihara, Norio Tagata, Toshimitsu Shimizu, Tetsu Matsuda, Norio Takahashi, Isamu Ueno, Josif L. Leites, Julia G. Carpova, Tatiana V. Zhitkova
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Patent number: 5066314Abstract: Method to remove acid components from a gas including to absorb those with an organic absorbent based on ethers of polyglycols at an elevated pressure followed by regeneration of the saturated absorbent and by dehydration of a part of the regenerated absorbent by heating, which is characterized in that the dehydration of the absorbent is carried out by the combination of stripping with a gas and heating at the temperature lower than the boiling point at 0.8 to 1.3 atm. by 80.degree. to 150.degree. C.Type: GrantFiled: July 9, 1990Date of Patent: November 19, 1991Assignees: State Scientific-Research Designing Institute for Nitrogen Industry and for Products of Organic Synthesis, Toho Kagaku Kogyo Co., LtdInventors: Iosif L. Leites, Yulya G. Karpova, Vladimir M. Berchenko, Takeshi Hihara, Toshimitsu Shimizu, Norio Takahashi, Isamu Ueno
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Patent number: 4958685Abstract: A method for plugging the areas of lost circulation occurred during the drilling of a well with the use of a drilling mud, and a lost circulation material to be used therefor. The lost circulation material comprising 1 to 90 parts by weight of a water-soluble solvent containing no active hydrogen atoms and hardly miscible with mineral oils and 10 to 99 parts by weight of a hydrophlic urethane prepolymer, and the method comprises injecting through the drilling pipe the lost circulation material sandwiched by a spacer of mineral oils, so as to allow the lost circulation material to penetrate into the lost circulation areas, to react with water which is present at the areas, and to plug the areas through its polymerization.Type: GrantFiled: May 24, 1989Date of Patent: September 25, 1990Assignee: Toho Kagaku Kogyo Co., Ltd.Inventors: Takeshi Hihara, Masahide Yanagiya, Kazuhito Ono