Patents by Inventor Hiroaki Nishijima
Hiroaki Nishijima 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: 6616905Abstract: Active carbon catalyst for recovering and removing sulfur oxides contained in flue gas by turning them into sulfuric acid by a catalytic desulfurization reaction. Powdery active carbon and fluororesin are kneaded by shearing force before being molded to a desired profile so that the inter-particulate gaps of powdery active carbon particles are made water-repellent. Flue gas preferably flows downwardly through a tower filled with such an active carbon catalyst, which is made to show a honeycomb structure having surfaces running only in a direction parallel to the flow. The activity of the catalyst maintains an enhanced level if dilute sulfuric acid or water is introduced into the active carbon from the top of the tower to cleanse the surface of the active carbon catalyst so that the catalyst layer is prevented from being clogged and contaminated by ashes and soot contained in flue gas.Type: GrantFiled: October 3, 2000Date of Patent: September 9, 2003Assignee: Chiyoda CorporationInventors: Kazushige Kawamura, Yoichi Umehara, Dai Takeda, Osamu Togari, Naonori Sonehara, Hiroaki Nishijima, Sachio Asaoka
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Patent number: 6308128Abstract: A driving force control system for an automotive vehicle comprises an ordinary target driving force generator. It determines an ordinary target driving force in response to operator manipulation of the accelerator pedal and vehicle speed. The ordinary target driving force is a predetermined target value of driving force required to keep the vehicle rolling over the surface of a flat road that has 0% gradient. A running resistance increment generator determines an increment in running resistance from a standard resistance that is predetermined for the vehicle. A corrected target driving force generator receives the ordinary target driving force, the vehicle speed and the running resistance increment. It determines corrected target driving force. The corrected target driving force generator restrains the corrected target driving force in response to idle and brake signals from an idle switch and a brake switch.Type: GrantFiled: March 9, 2000Date of Patent: October 23, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Hiroaki Nishijima, Nobusuke Toukura, Masayuki Yasuoka
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Patent number: 6306062Abstract: A driving force control system for an automotive vehicle comprises a controller. The controller determines standard resistance (RLDTRQ) in response to vehicle speed (VSP), and it also determines an increment in running resistance (RESTRQ) from the standard resistance (RLDTRQ). The controller determines driving force correction (ADDFD) in response to the increment in running resistance (RESTRQ). The controller adds the driving force correction (ADDFD) to ordinary target driving force (tTd#n) to provide corrected target driving force (tTd). The controller converts the increment in running resistance (RESTRQ) into the driving force correction (ADDFD) at a rate that is variable in response to the increment in running resistance (RESTRQ).Type: GrantFiled: March 3, 2000Date of Patent: October 23, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Nobusuke Toukura, Hiroaki Nishijima, Masayuki Yasuoka
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Patent number: 6282465Abstract: A driving force control system for an automotive vehicle comprises a vehicle speed sensor detecting an operating parameter indicative of a speed of the vehicle and generating a vehicle speed signal indicative of said detected operating parameter. An ordinary target driving force generator determines an ordinary target driving force in response to operator manipulation of the accelerator pedal and the vehicle speed. The ordinary target driving force is a predetermined target value of driving force required to keep the vehicle rolling over the surface of a flat road that has 0% gradient. A running resistance increment generator determines an increment in running resistance from a standard resistance that is indicated by the ordinary target driving force. A corrected target driving force generator receives the ordinary target driving force, the vehicle speed and the running resistance increment. It determines corrected target driving force.Type: GrantFiled: March 8, 2000Date of Patent: August 28, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Hiroaki Nishijima, Nobusuke Toukura, Masayuki Yasuoka
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Patent number: 6269289Abstract: A process of forming a value of standard resistance for an automotive vehicle and a vehicle control system are disclosed. The process comprises sensing operating parameters indicative of operating conditions of the vehicle power train during operating an engine to keep the automotive vehicle rolling over the surface of a flat road in steady running state at each of said predetermined number of reading points of vehicle speed, A value of driving torque produced by the power train is derived from the sensed operating parameters at each of the predetermined number of reading points of vehicle speed. Finally, the derived values of driving torque are set as known standard resistance values at the predetermined number of reading points of vehicle speed, respectively.Type: GrantFiled: March 3, 2000Date of Patent: July 31, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Nobusuke Toukura, Hiroaki Nishijima, Masayuki Yasuoka
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Patent number: 5382711Abstract: High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005 % by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.Type: GrantFiled: April 18, 1994Date of Patent: January 17, 1995Assignee: Chiyoda CorporationInventors: Sachio Asaoka, Tetsuo Maejima, Kouji Sakashita, Noriyuki Yoneda, Makoto Yasui, Nobuhiro Onda, Tsuneo Watanabe, Nobuo Moriya, Akio Shindo, Hiroaki Nishijima, Athumi Kukidome, Ryuichi Inaba, Takashi Imazeki, Kaoru Shimogawara
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Patent number: 5382712Abstract: High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005% by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.Type: GrantFiled: April 18, 1994Date of Patent: January 17, 1995Assignee: Chiyoda CorporationInventors: Sachio Asaoka, Tetsuo Maejima, Kouji Sakashita, Noriyuki Yoneda, Makoto Yasui, Nobuhiro Onda, Tsuneo Watanabe, Nobuo Moriya, Akio Shindo, Hiroaki Nishijima, Athumi Kukidome, Ryuichi Inaba, Takashi Imazeki, Kaoru Shimogawara
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Patent number: 5371304Abstract: High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005% by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.Type: GrantFiled: April 18, 1994Date of Patent: December 6, 1994Assignee: Chiyoda CorporationInventors: Sachio Asaoka, Tetsuo Maejima, Kouji Sakashita, Noriyuki Yoneda, Makoto Yasui, Nobuhiro Onda, Tsuneo Watanabe, Nobuo Moriya, Akio Shindo, Hiroaki Nishijima, Athumi Kukudome, Ryuichi Inaba, Takashi Imazeki, Karou Shimogawara
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Patent number: 5368827Abstract: High purity, crystalline adduct of bisphenol A and phenol is produced multi-stage crystallization of a phenolic slurry of bisphenol A with a crystal separation and washing step being interposed between each of the two stages. Each of the crystallization stage includes a series of crystallization towers operated at decreasing temperatures. The crystallization of the slurry is performed by continuously discharging a portion of the slurry from each of the crystallization towers, introducing the discharged slurry into one or more coolers and then recycling the cooled slurry to the tower. Another portion of the slurry in each crystallization slurry is continuously discharged, heated for dissolving fine crystals of the adduct and then recycled to the crystallization tower so that large crystals are grown in each of the crystallization steps. An apparatus having a plurality of coolers and suitable for effecting the above crystallization is also disclosed.Type: GrantFiled: October 28, 1992Date of Patent: November 29, 1994Assignee: Chiyoda CorporationInventors: Nobuo Moriya, Keiji Shimoda, Kouji Sakashita, Hiroaki Nishijima, Nobuhiro Onda, Takeshi Kouzaki
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Patent number: 5345000Abstract: High purity, crystalline adduct of bisphenol A and phenol is produced multi-stage crystallization of a phenolic slurry of bisphenol A with a crystal separation and washing step being interposed between each of the two stages. Each of the crystallization stage includes a series of crystallization towers operated at decreasing temperatures. The crystallization of the slurry is performed by continuously discharging a portion of the slurry from each of the crystallization towers, introducing the discharged slurry into one or more coolers and then recycling the cooled slurry to the tower. Another portion of the slurry in each crystallization slurry is continuously discharged, heated for dissolving fine crystals of the adduct and then recycled to the crystallization tower so that large crystals are grown in each of the crystallization steps. An apparatus having a plurality of coolers and suitable for effecting the above crystallization is also disclosed.Type: GrantFiled: March 3, 1993Date of Patent: September 6, 1994Assignee: Chiyoda CorporationInventors: Nobuo Moriya, Keiji Shimoda, Sachio Asaoka, Takao Kameda, Kouji Sakashita, Tetsuo Maejima, Makoto Yasui, Hiroaki Nishijima, Nobuhiro Onda, Takeshi Kouzaki
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Patent number: 5324867Abstract: High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005% by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.Type: GrantFiled: July 13, 1992Date of Patent: June 28, 1994Assignee: Chiyoda CorporationInventors: Sachio Asaoka, Tetsuo Maejima, Kouji Sakashita, Noriyuki Yoneda, Makoto Yasui, Nobuhiro Onda, Tsuneo Watanabe, Nobuo Moriya, Akio Shindo, Hiroaki Nishijima, Athumi Kukidome, Ryuichi Inaba, Takashi Imazeki, Kaoru Shimogawara
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Patent number: 5073673Abstract: A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate containing about 0.1-2.5% by weight of aluminum and about 0.1-5% by weight of gallium in the skeleton thereof and having a particle size in the range of about 0.05-20 .mu.m, with at least 80% by weight of the crystalline aluminogallosilicate having a particle size of 0.1-10 .mu.m.Type: GrantFiled: May 30, 1990Date of Patent: December 17, 1991Assignee: Research Association for the Utilization of Light OilInventors: Kazuo Hirabayashi, Tadami Kondoh, Hiroaki Nishijima, Shinichi Inoue, Kouji Adachi, Fumiho Igarashi, Toshio Wakai
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Patent number: 4861934Abstract: A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate catalyst of the formula:aM.sub.2/n O bAl.sub.2 O.sub.3 Ga.sub.2 O.sub.3 cSiO.sub.2 dH.sub.2 Owherein M is a metal selected from an alkali metal, an alkaline earth metal and a mixture thereof, n is the valence of said metal, a is a positive number of (b+1).+-.3.0, b is between 1 and 6, c is between 80 and 490, d is between 1 and 200, c/(b+1) is between 40 and 70, and c/b is between 46.7-140.Type: GrantFiled: February 25, 1988Date of Patent: August 29, 1989Assignee: Research Association for Utilization of Light OilInventors: Isao Suzuki, Kazuo Hirabayashi, Tadami Kondoh, Hiroaki Nishijima
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Patent number: RE46145Abstract: Provided are: a uniformly, highly dispersed metal catalyst including a catalyst carrier and a catalyst metal being loaded thereon dispersed throughout the carrier, the uniformly, highly dispersed metal catalyst having excellent performances with respect to catalytic activity, selectivity, life, etc.; and a method of producing the same. The uniformly, highly dispersed metal catalyst includes a catalyst carrier made of a metal oxide and a catalyst metal having catalytic activity, the catalyst metal being loaded on the catalyst carrier, in which the catalyst carrier is a sulfur-containing catalyst carrier having sulfur or a sulfur compound almost evenly distributed throughout the carrier and the catalyst metal is loaded on the sulfur-containing catalyst carrier in a substantially evenly dispersed manner over the entire carrier substantially according to the distribution of the sulfur or the sulfur compound.Type: GrantFiled: July 11, 2013Date of Patent: September 13, 2016Assignee: CHIYODA CORPORATIONInventors: Yoshimi Okada, Toshiji Makabe, Masashi Saito, Hiroaki Nishijima