Patents by Inventor Shigeo Hasegawa
Shigeo Hasegawa 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).
-
Patent number: 6277327Abstract: This invention relates to equipment for treating the aforesaid waste plastics directly with supercritical water, and an object thereof is to provide a method for the anticorrosive treatment of waste plastics treating equipment which makes it possible to use inexpensive stainless steel. Waste plastics treating equipment made of stainless steel is charged with a predetermined amount of an aqueous solution containing at least one alkali metal salt, and this aqueous solution is deaerated until its dissolved oxygen content is reduced to 0.5 mg/L or less. After the temperature and pressure of the equipment are raised until supercritical conditions are established, these temperature and pressure are maintained for a predetermined period of time.Type: GrantFiled: January 29, 1999Date of Patent: August 21, 2001Assignees: Tohoku Electric Power Company, Inc., Mitsubishi Heavy Industries, Ltd.Inventors: Masanori Tabata, Naohiko Ukawa, Masato Kaneko, Kazuto Kobayashi, Shigeo Hasegawa, Wataru Matsubara, Kenji Iwasaki, Yoshihisa Saito, Takehiko Moriya
-
Patent number: 6203598Abstract: This invention relates to a flue gas treating process including a heat recovery step for recovering heat from flue gas by means of a heat exchanger (4) and thereby cooling the flue gas, and a subsequent absorption step for bringing the flue gas into gas-liquid contact with an absorbing fluid (D) in absorption towers (12, 13) so as to remove at least SO2 present in the flue gas by absorption into the absorbing fluid (D), which is characterized, for example, in that a powder addition step for spraying a powder collectable in the absorption step into the flue gas is provided prior to the heat recovery step. This invention makes it possible to provide a flue gas treating process in which a countermeasure against SO3 present in flue gas can be easily achieved without resorting to ammonia injection and the flue gas can further be purified without the disadvantage of causing the injected substance to remain in the treated flue gas.Type: GrantFiled: February 8, 1999Date of Patent: March 20, 2001Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Shigeo Hasegawa, Naohiko Ukawa, Susumu Okino, Koichiro Iwashita, Kazuaki Kimura, Atsushi Yoshioka, Yoshimitsu Kawanishi, Shoichi Onishi, Toru Takashina, Toyoshi Nakagawa
-
Patent number: 6093402Abstract: Citrus amanatsudaidai peel extract, which was used as a starting materials was purified over various kinds of column chromatography (activated carbon, Amberlite IR-120B [H.sup.+ ], cellulose, Sephadex G25 and HPLC) to isolate a peptide as a white powder. This peptide is a water-soluble neutral substance and shows positive reactions to ninhydrin and sodium nitroprusside and negative reactions to anisaldehyde, phenolsulfuric acid and Dragendorff reagent. Amino acids constituting the peptide of the present invention contain aspartic acid and oxylysine in large amounts. Hair growers containing the peptide of the present invention were successful in promoting 150% proliferation of rabbit hair papilla cells when applied in a concentration of 1.4 .mu.g/ml.Type: GrantFiled: June 30, 1998Date of Patent: July 25, 2000Assignee: Yutaka MiyauchiInventors: Yutaka Miyauchi, Shigeo Hasegawa, Kazuhiko Otoguro, Kanki Komiyama
-
Patent number: 6045801Abstract: Astragali radix extract, which was used as a starting material, was purified over various kinds of column chromatography (activated carbon, Amberlite IR-120B [H.sup.+ ], cellulose, Sephadex G25 and HPLC) to isolate a peptide as a white powder. This peptide is a water-soluble neutral substance and shows positive reactions to ninhydrin and sodium nitroprusside and negative reactions to anisaldehyde, phenolsulfuric acid and Dragendorff reagent. Amino acids constituting the peptide of the present invention contain aspartic acid and oxylysine in large amounts. The peptide of the present invention were successful in promoting 150% proliferation of rabbit hair papilla cells when applied in a concentration of 1.4 .mu.g/ml.Type: GrantFiled: June 30, 1998Date of Patent: April 4, 2000Assignee: Yutaka MiyauchiInventors: Yutaka Miyauchi, Shigeo Hasegawa
-
Patent number: 5958335Abstract: A corrosion preventive method and an apparatus for preventing corrosion of stainless steel components in an exhaust gas desulfurizing apparatus of an exhaust gas treatment system comprising the exhaust gas desulfurizing apparatus for removing at least sulfur dioxide by bringing exhaust gas into contact with absorbing solution, wherein specific means is employed to maintain the Cl.sup.- concentration and SO.sub.4.sup.2- concentration at a corrosion preventive side of the corrosion resisting limit of stainless steel.Type: GrantFiled: April 7, 1997Date of Patent: September 28, 1999Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Kiyoshi Okazoe, Yoshio Nakayama, Koichiro Iwashita, Atsushi Tatani, Shigeo Hasegawa
-
Patent number: 5785901Abstract: An object of this invention is to provide a gas-liquid contact apparatus for use in wet flue gas desulfurizers and the like which is equipped with lightweight and inexpensive header pipes having excellent wear resistance and corrosion resistance and hence exhibits high reliability and economical efficiency. To this end, there is provided a gas-liquid contact apparatus wherein one or more header pipes having attached thereto a plurality of spray nozzles for spouting a slurry upward are disposed in the main body of a tower through which a gas flows, characterized in that the header pipes are made of a fiber-reinforced resin composite material and the outer surface thereof or the outer and inner surfaces thereof are formed of a corrosion-resistant and wear-resistant layer of a resin containing ceramic particles.Type: GrantFiled: May 21, 1997Date of Patent: July 28, 1998Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Shigeo Hasegawa, Noohiko Ukawa, Kenji Iwasaki, Tamotsu Higuchi, Koichiro Iwashita
-
Patent number: 5728910Abstract: To present an oil-forming method of chlorine-containing plastic refuse capable of obtaining oily product free from chlorine content, while suppressing apparatus corrosion by efficiently capturing hydrogen chloride generated by decomposition of chlorine-containing plastics, the oil-forming method of chlorine-containing plastic refuse is characterized by decomposing chlorine-containing plastic refuse using water in supercritical region as reaction medium and forming into oil, wherein silver nitrate of 0.8 to 2.0 times the reaction equivalent amount of hydrogen chloride generated by decomposition of chlorine-containing plastic refuse is added in the water as reaction medium to decompose and form into oil, and generated hydrogen chloride is removed in a form of silver chloride.Type: GrantFiled: October 22, 1996Date of Patent: March 17, 1998Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Wataru Matsubara, Hiroshi Makihara, Shigeo Hasegawa
-
Patent number: 5677377Abstract: A lining for a metal, a lining powder and a lining resin composition which comprise a mixture of a maleic acid-modified polypropylene and a polypropylene, or a mixture of the above-mentioned mixture and an ethylene propylene rubber and/or an antioxidant; and a lining method.Type: GrantFiled: November 4, 1996Date of Patent: October 14, 1997Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Shigeo Hasegawa, Takafumi Shimada, Ryuji Yoshiyama, Kenji Iwasaki, Tatsuyuki Nishikawa, Takayoshi Kawaoka
-
Patent number: 5677378Abstract: A lining for a metal, a lining powder and a lining resin composition which comprise a mixture of a maleic acid-modified polypropylene and a polypropylene, or a mixture of the above-mentioned mixture and an ethylene propylene rubber and/or an antioxidant; and a lining method.Type: GrantFiled: November 6, 1996Date of Patent: October 14, 1997Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Shigeo Hasegawa, Takafumi Shimada, Ryuji Yoshiyama, Kenji Iwasaki, Tatsuyuki Nishikawa, Takayoshi Kawaoka
-
Patent number: 5616290Abstract: A gas-liquid contacting apparatus in which spray nozzles for spraying slurry solution upward are arranged in a tower body through which gas passes, wherein a liquid inlet portion of the spray nozzle is of a bell shape having a radius of curvature of 0.Type: GrantFiled: May 20, 1996Date of Patent: April 1, 1997Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Ohji Rubber & Chemicals Co., Ltd.Inventors: Makiichi Ishihara, Takakazu Sunada, Shigeo Hasegawa, Naohiko Ukawa, Toru Takashina, Yukio Kita, Kouichiro Iwashita, Kousuke Yamashita, Junji Ozaki, Kaname Kaneshige
-
Patent number: 5605655Abstract: A gas-liquid contacting apparatus in which spray nozzles for spraying slurry solution upward are arranged in a tower body through which gas passes, wherein a liquid inlet portion of the spray nozzle is of a bell shape having a radius of curvature of 0.Type: GrantFiled: March 31, 1995Date of Patent: February 25, 1997Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Ohji Rubber & Chemicals Co., Ltd.Inventors: Makiichi Ishihara, Takakazu Sunada, Shigeo Hasegawa, Naohiko Ukawa, Toru Takashina, Yukio Kita, Kouichiro Iwashita, Kousuke Yamashita, Junji Ozaki, Kaname Kaneshige
-
Patent number: 5229151Abstract: A ground fish meat (surimi) is produced by bleaching raw fish meat with water in the presence of a quality-improving agent comprising calcium chloride, potassium chloride, or a mixture of sodium chloride with potassium chloride or calcium chloride in an amount of 0.01 to 3.0% of the total weight of the raw fish meat and the bleaching water. During the bleaching, the fish meat is forcibly stirred. Then, the thus bleached fish meat is ground to produce a surimi product.Type: GrantFiled: April 7, 1992Date of Patent: July 20, 1993Assignee: Shin Nippon Giken Ltd.Inventors: Michihiko Yano, Masao Takahashi, Masayoshi Kazama, Shigeo Hasegawa
-
Patent number: 4031039Abstract: A method for treating a waste high-polymer mixture by fractionating the mixture consisting essentially of five groups of high polymers, i.e., polyolefinic, polystyrenic, polyvinyl-chloride, thermosetting, and natural high polymers, taking advantage of their dissimilar solubilities in different organic solvents, characterized in that the mixture is brought into contact with o-xylene, p-xylene, or m-xylene, the solvents being used either singly or in a combination of two or more, at temperatures within a certain range or ranges to dissolve and fractionate the polystyrenic and polyolefinic high polymers, and the polyvinyl chlorides in the remainder are dissolved and fractionated by using at least one solvent selected from the group consisting of tetrahydrofuran, cyclohexanone, dioxane, and methylethylketone and at a temperature within a certain range, whereby the waste mixture is fractionated into the groups of polyolefinic, polystyrenic, polyvinyl-chloride, thermosetting, and natural high polymers.Type: GrantFiled: August 23, 1976Date of Patent: June 21, 1977Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Yoshiaki Mizumoto, Shigeo Hasegawa