Patents Assigned to Hakuto Co., Ltd.
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Patent number: 8551364Abstract: A process for inhibiting polymerization of an aromatic vinyl compound during the stage of producing, purifying, storing or transporting the aromatic vinyl compound which not only inhibits an initial polymerization but also inhibits polymerization efficiently over a long period of time and which is excellent in handleability. The process involves the step of adding a nitrogenous aromatic compound in combination with a sulfonic acid compound to the aromatic vinyl compound during the production, purification, storage of transportation thereof.Type: GrantFiled: June 20, 2012Date of Patent: October 8, 2013Assignee: Hakuto Co., Ltd.Inventors: Junichi Nakajima, Seiji Tanizaki
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Patent number: 8309109Abstract: A cosmetic in an emulsified state, in which a titanium dioxide microparticle coated with hydrous silicic acid and/or a hydrous silicate compound, a higher alcohol, an oily component other than the higher alcohol, and a polysaccharide are contained, and the polysaccharide containing at least one of fucose, glucose, glucuronic acid and rhamnose as a constituent monosaccharide, and having fucose and/or rhamnose in a side chain is contained in an amount of 0.01% by weight to 1% by weight relative to the total amount of the cosmetic. And a cosmetic containing the higher alcohol, the oily component and the polysaccharide in an emulsified state, in which the higher alcohol is composed of two or more kinds of higher alcohols having different molecular weights, and is contained in the cosmetic in an amount of 1% by weight to 20% by weight relative to the total amount of the cosmetic.Type: GrantFiled: June 29, 2007Date of Patent: November 13, 2012Assignees: Hakuto Co., Ltd., Kanagawa UniversityInventors: Kazuo Tajima, Yoko Imai, Teruo Horiuchi, Yasuhiro Nohata
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Patent number: 8246858Abstract: A process for inhibiting polymerization of an aromatic vinyl compound during the stage of producing, purifying, storing or transporting the aromatic vinyl compound which not only inhibits an initial polymerization but also inhibits polymerization efficiently over a long period of time and which is excellent in the handleability. The process involves the step of adding a nitrogenous aromatic compound in combination with a sulfonic acid compound to the aromatic vinyl compound during the production, purification, storage of transportation thereof.Type: GrantFiled: March 23, 2007Date of Patent: August 21, 2012Assignee: Hakuto Co., Ltd.Inventors: Junichi Nakajima, Seiji Tanizaki
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Publication number: 20090324658Abstract: A cosmetic exhibiting improved thermal stability and storage stability, which is prepared by using a three-phase emulsification-dispersing method in an aqueous phase. In the cosmetic containing an oily base material and/or a pigment as a component to be emulsification-dispersed, an emulsification-dispersing agent and water, the thermal stability and storage stability are improved, and the emulsification-dispersing agent composed of a polysaccharide having a particulate structure as a main component, and two or more kinds of components to be emulsification-dispersed are contained. The components to be emulsification-dispersed exhibit a dielectric constant ranging from 1 to 5 (F/m), and an inorganicity/organicity ratio ranging from 0 to 0.5.Type: ApplicationFiled: June 26, 2007Publication date: December 31, 2009Applicants: HAKUTO CO., LTD., KANAGAWA UNIVERSITYInventors: Yasuhiro Nohata, Kazuo Tajima, Yoko Imai, Teruo Horiuchi
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Patent number: 7202391Abstract: According to the present invention, there is provided a process for inhibiting the polymerization of an aromatic vinyl compound which is capable of efficiently inhibiting the polymerization of an aromatic vinyl compound not only in an initial stage but also over a long term in the stage of producing, purifying, storing or transporting the aromatic vinyl compound, and which is excellent in handling. The present invention relates to a process for inhibiting the polymerization of an aromatic vinyl compound which requires the step of adding a 2-nitrophenol compound in combination with a sulfonic acid compound to the aromatic vinyl monomer during the stage of producing, purifying, storing or transporting the aromatic vinyl compound.Type: GrantFiled: April 18, 2002Date of Patent: April 10, 2007Assignee: Hakuto Co., Ltd.Inventors: Seiji Tanizaki, Junichi Nakajima
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Patent number: 6740528Abstract: In a process of treating a radical polymerizable compound containing a stable free radical compound, there is provided a method for measuring the concentration of the stable free radical compound rapidly and with high precision, from the absorption intensity of electron spin resonance.Type: GrantFiled: August 30, 2001Date of Patent: May 25, 2004Assignee: Hakuto Co., Ltd.Inventors: Norihiko Onishi, Hiroshi Kurumado, Yoshiharu Yamaguchi
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Publication number: 20020048820Abstract: In a process of treating a radical polymerizable compound containing a stable free radical compound, there is provided a method for measuring the concentration of the stable free radical compound rapidly and with high precision, from the absorption intensity of electron spin resonance.Type: ApplicationFiled: August 30, 2001Publication date: April 25, 2002Applicant: HAKUTO CO., LTD.Inventors: Norihiko Onishi, Hiroshi Kurumado, Yoshiharu Yamaguchi
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Patent number: 5409571Abstract: A scale deposit inhibitor and a method for continuously controlling scale deposition applicable to a digester and its peripheral equipment used in kraft pulp manufacture are disclosed, the scale deposit inhibitor comprising a maleic acid-acrylic acid-hypophosphorous acid terpolymer having a maleic acid unit to acrylic acid unit molar ratio of 1:4 to 4:1, a hypophosphorous acid unit content of 1 to 12 mol %, and a weight average molecular weight of 500 to 10000. The scale deposit inhibitor is added to a cooking liquor in a concentration of 0.01 to 10 ppm per ppm of a calcium ion in the cooking liquor.Type: GrantFiled: February 1, 1994Date of Patent: April 25, 1995Assignee: Hakuto Co., Ltd.Inventors: Akira Togo, Takanori Shibata
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Patent number: 5175279Abstract: A polysaccharide (Biopolymer B-16) being produced by cultivating Alcaligenes latus strain B-16 (FERM-2015) and having at least one function selected from water absorption, moisture absorption, humectant capability, thickening capability, suspension stability, emulsion stability and dispersant capability along with high biodegradability and which can be used without creating any environmental hazard such as secondary pollution, said Biopolymer B-16 consisting essentially of rhamnose, fucose, glucose, mannose and glucuronic acid which are present in a molar ratio of(1-10):(2-10):(4-20):(1):(1-5).Type: GrantFiled: July 25, 1991Date of Patent: December 29, 1992Assignees: Hakuto Co., Ltd., Agency of Industrial Science and TechnologyInventors: Ryuichiro Kurane, Tomoo Suzuki, Yasuhiro Nohata
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Patent number: 5154277Abstract: A mechanism for receiving electronic parts transported by a conveyor belt and dispensing them one at a time, comprises a stop pawl member and a lift pawl member which are disposed forwardly and rearwardly, respectively, along the belt. Each of the pawl members is bifurcated. Both the pawl members can be located either below the belt at their lower positions or above the belt at therir upper positions. A drive device actuates these pawl members to alternately and oppositely take their respective upper positions and lower positions. These pawl members at their lower positions permit the electronic part on the conveyor belt to pass. The stop pawl member at its upper position engages a front face of the electronic part to stop its advance. The lift pawl member at its upper position lifts the electronic part from the belt to urge it against a plate member.Type: GrantFiled: January 22, 1992Date of Patent: October 13, 1992Assignee: Hakuto Co., Ltd.Inventor: Itsuro Murakami
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Patent number: 4800611Abstract: A plate cleaning apparatus comprising a pair of cleaning members disposed above and beneath a passageway of the plate, a first pair of nozzles and a second pair of nozzles for emitting high speed clean air streams, a clean zone for supplying low speed clean air, and feed rollers for advancing the plate. A cleaning roller comprising a plurality of thin discs of nonwoven fabric bonded side by side with adhesive, and a longitudinal shaft extending through central holes in the thin discs is particularly suited for the cleaning members.Type: GrantFiled: April 15, 1987Date of Patent: January 31, 1989Assignees: Hakuto Co., Ltd., Toyo Netsu Kogyo Kaisha, Ltd.Inventors: Masao Toriwaki, Kinya Kawakami, Tomoaki Ishino
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Patent number: 4743325Abstract: A method of sticking film sheet on a panel surface is disclosed in which a continuous web of film is cut to proper length fitted to the size of the panel to make an individual film sheet during continuous sticking operation for producing a film laminated panel. The sticking operation is not interrupted by the cutting operation.A laminator constructed to achieve this film laminated panel manufacture includes block members which are movable toward and away from the tacking station where the leading end of the continuous web of film is tacked to the forward end of the panel, and a cutter mounted on the block members. The cutter severs across the film web as the block members moves toward the tacking station in the same direction and at the same speed as the film web during sticking operation.Type: GrantFiled: September 17, 1986Date of Patent: May 10, 1988Assignees: Hakuto Co., Ltd., Sanei Giken Co., Ltd.Inventor: Eiichi Miyake
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Patent number: 4722629Abstract: An adaptor is mounted on one end of a narrow-sized elongated electronic element stick which contains therein a number of electronic elements in a row. The stick is used with an electronic element dispenser which includes an inlet aperture and a guide frame having a pair of side walls for receiving and guiding the one end of the stick therebetween to lead the one end of the stick into a position adjacent to the inlet aperture of the dispenser. The adaptor comprises a base plate for supporting the bottom of the stick and a pair of elastic side walls extending upwardly and inwardly from opposed side edges of the base plate. The base plate of the adaptor has a width larger than the width of the bottom of the stick and slightly smaller than the spacing between the side walls of the guide frame. The elastic side walls of the adaptor is capable of elastically engaging the side surfaces of the stick so that the adaptor is held in position at the one end of the stick.Type: GrantFiled: July 8, 1986Date of Patent: February 2, 1988Assignee: Hakuto Co., Ltd.Inventor: Hajime Makita
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Patent number: 4659419Abstract: A method of sticking film sheet on a panel surface is disclosed in which a continuous web of film is cut to proper length fitted to the size of the panel to make an individual film sheet during a continuous sticking operation for producing a film laminated panel. The sticking operation is not interrupted by the cutting operation.A laminator constructed to achieve this film laminated panel includes block members which are movable toward and away from the tacking station where the leading end of the continuous web of film is tacked to the forward end of the panel, and a cutter mounted on the block members. The cutter severs across the film web as the block members move toward the tacking station in the same direction and at the same speed as the film web during the sticking operation.Type: GrantFiled: May 1, 1984Date of Patent: April 21, 1987Assignees: Hakuto Co., Ltd., Sanei Giken Co., Ltd.Inventor: Eiichi Miyake
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Patent number: 4264397Abstract: Apparatus for sticking nonconductive tape including plating perforations to sheet metal comprises supply means for metal tape, feed means for nonconductive tape, punching means for perforating nonconductive tape to make plating perforations therein, a device for heating and pressure-sticking the metal tape and the perforated nonconductive tape together, cooling means for the tapes, and control means for monitoring the position of the plating perforations and controlling the running speed of the nonconductive tape.Type: GrantFiled: September 26, 1979Date of Patent: April 28, 1981Assignees: Hakuto Co., Ltd., Sanei Engineering Co., Ltd.Inventors: Shunichi Kawashima, Eiichi Miyake