Patents by Inventor Akihiko Takahashi
Akihiko Takahashi 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: 7404083Abstract: An image processing apparatus records an input image signal into another recording medium or displays the input image signal on a display device. When a digital image signal having superimposed thereupon an electronic watermark is input, an identification circuit identifies the method employed to superimpose the electronic watermark. A decode circuit decodes the electronic watermark by employing the electronic watermark superimposing method identified by the identification circuit.Type: GrantFiled: July 17, 2001Date of Patent: July 22, 2008Assignee: Nikon CorporationInventor: Akihiko Takahashi
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Publication number: 20080142123Abstract: The present invention provides a ferritic stainless steel casting and a sheet thereof excellent in deep drawability, punch stretchability and ridging resistance and a method for producing the casting and the sheet. In the present invention, a chemical composition is controlled so that the amounts of C, N, Si, Mn, P and Ti may be reduced to the utmost for securing high workability and, on the basis of the chemical composition, the roping and ridging of a steel sheet product is reduced by adding Mg, thus dispersing Mg containing oxides that accelerate the formation of nuclei for solidification and, resultantly, suppressing the development of coarse columnar crystals in a casting. The present invention is characterized in that the average composition of the Mg containing oxides dispersing in a casting satisfies the following expressions <2> and <3>, 17.4(Al2O3)+3.9(MgO)+0.3(MgAl2O4)+18.7(CaO)?500<2>, (Al2O3)+(MgO)+(MgAl2O4)+(CaO)?95<3>.Type: ApplicationFiled: November 13, 2007Publication date: June 19, 2008Applicant: Nippon Steel CorporationInventors: Akihiko Takahashi, Junichi Hamada, Ken Kimura, Takashi Morohoshi, Yoshihito Yamada, Toyohiko Kakihara, Satoshi Hashimoto
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Patent number: 7215793Abstract: An electronic image-capturing apparatus includes: an image-capturing element that captures an image of a subject and generates electronic image information; a recording device that records the electronic image information that has been generated in a recording medium; a registration device that registers inherent information with respect to a registrant; an information detection device that detects inherent information with respect to a user of the electronic image-capturing apparatus; an information verification device that references the inherent information with respect to the user detected by the information detection device with the inherent information registered in the registration device; and a control device that allows an image-capturing operation to be performed on the electronic image-capturing apparatus if it is decided by the information verification device that the two sets of inherent information match.Type: GrantFiled: September 24, 2004Date of Patent: May 8, 2007Assignee: Nikon CorporationInventor: Akihiko Takahashi
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Publication number: 20060207656Abstract: An air bleeding pipe joint has a pair of connection pipe portions inserted and connected to a circulation piping of engine cooling water, a branch pipe portion branched from the connection pipe portions and having an air bleeding hole in an inner side thereof, and a plug body detachably mounted to the branch pipe portion, and opening and closing the air bleeding hole. The air bleeding pipe joint discharges air within the circulation piping to the outside by opening the air bleeding hole. The plug body is attached to the branch pipe portion by using an elastic locking structure or an embedding structure.Type: ApplicationFiled: March 14, 2006Publication date: September 21, 2006Inventor: Akihiko Takahashi
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Patent number: 7009641Abstract: An image-capturing device that captures a subject image through an exchangeable lens, a color sensor that receives the subject image and outputs color data and a white balance detection circuit that determines a white balance adjustment gain by using a correlated color temperature ascertained from the color data read out from the color sensor in correspondence to the focal point detection area used for a focal point detection at a focal point detection device are provided. If the average value of the color data read out from the color sensor does not indicate achromatic color data, the white balance detection circuit reads out the correlated color temperature having been obtained and stored in memory previously from the memory to determine the white balance adjustment R gain and the white balance adjustment B gain.Type: GrantFiled: July 17, 2001Date of Patent: March 7, 2006Assignee: Nikon CorporationInventor: Akihiko Takahashi
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Patent number: 6953062Abstract: The present invention provides a fuel tank or a fuel pipe excellent particularly in the corrosion resistance of the outer surface in a salt damage environment, and is a fuel tank or a fuel pipe excellent in corrosion resistance characterized by: being formed by using a steel sheet or a steel pipe containing Cr of 9.0 to 25.0 mass % as the base material; on the outer surface thereof, having any one or more of welded portions, brazed portions and structurally gapped portions contacting components; and having one or more of metals, whose electrode potential in a 5%-NaCl aqueous solution at 30° C. is ?0.4 V or less relative to a saturated calomel electrode, attached to at least a part or parts of said portion(s) of the outer surface in an electrically conductive manner.Type: GrantFiled: February 4, 2002Date of Patent: October 11, 2005Assignee: Nippon Steel CorporationInventors: Shunji Sakamoto, Akihiko Takahashi, Michio Kaneko, Toshio Tanoue, Kenji Kato, Naoto Ono, Masao Kikuchi
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Publication number: 20050161133Abstract: A Cr-bearing heat-resistant steel sheet with excellent workability comprising, in mass %, C of 0.001% to 0.010%, Si of 0.01% to 0.60%, Mn of 0.05% to 0.60%, P of 0.01% to 0.04%, S of 0.0005% to 0.0100%, Cr of 14% to 19%, N of 0.001% to 0.020%, Nb of 0.3% to 1.0%, Mo of 0.5% to 2.0% and, as required, one or more of Cu of 0.5% to 3.0%, W of 0.01% to 1.0% and Sn of 0.01% to 1.00%, and/or one or more of Ti of 0.01% to 0.20%, Al of 0.005% to 0.100%, Mg of 0.0002% to 0.0100%, and B of 0.0003% to 0.001%, with the remainder comprising iron and unavoidable impurities, and having an x-ray intensity ratio {111}/({100}+{211}) of 2 or greater in the central region of thickness.Type: ApplicationFiled: December 12, 2003Publication date: July 28, 2005Applicant: NIPPON STEEL CORPORATIONInventors: Junichi Hamada, Naoto Ono, Akihiko Takahashi, Tadashi Komori
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Publication number: 20050073596Abstract: Image data are obtained by photographing a target image containing fixed pattern noise and a noise image photographed in a dark state and having recorded therein position information indicating the position of the fixed pattern noise are obtained. The position of each pixel indicating a color information value equal to or greater than a threshold value is extracted from the noise image and the color information at the pixel at the corresponding position in the target image is substituted with a median value of color information values at surrounding pixels so as to eliminate the fixed pattern noise from the target image.Type: ApplicationFiled: September 30, 2004Publication date: April 7, 2005Applicant: NIKON CORPORATIONInventor: Akihiko Takahashi
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Publication number: 20050036656Abstract: An electronic image-capturing apparatus includes: an image-capturing element that captures an image of a subject and generates electronic image information; a recording device that records the electronic image information that has been generated in a recording medium; a registration device that registers inherent information with respect to a registrant; an information detection device that detects inherent information with respect to a user of the electronic image-capturing apparatus; an information verification device that references the inherent information with respect to the user detected by the information detection device with the inherent information registered in the registration device; and a control device that allows an image-capturing operation to be performed on the electronic image-capturing apparatus if it is decided by the information verification device that the two sets of inherent information match.Type: ApplicationFiled: September 24, 2004Publication date: February 17, 2005Applicant: NIKON CORPORATIONInventor: Akihiko Takahashi
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Publication number: 20040154708Abstract: The present invention provides a ferritic stainless steel casting and a sheet thereof excellent in deep drawability, punch stretchability and ridging resistance and a method for producing the casting and the sheet. In the present invention, a chemical composition is controlled so that the amounts of C, N, Si, Mn, P and Ti may be reduced to the utmost for securing high workability and, on the basis of the chemical composition, the roping and ridging of a steel sheet product is reduced by adding Mg, thus dispersing Mg containing oxides that accelerate the formation of nuclei for solidification and, resultantly, suppressing the development of coarse columnar crystals in a casting.Type: ApplicationFiled: November 25, 2003Publication date: August 12, 2004Inventors: Akihiko Takahashi, Junichi Hamada, Ken Kimura, Takashi Morohoshi, Yoshihito Yamada, Toyohiko Kakihara, Satoshi Hashimoto
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Patent number: 6653769Abstract: Spacers used in a picture display device are formed of a sintered product having a structure in which at least one kind of metal selected from the group consisting of Si, Zn, Al, Sn, Cu and Mg is dispersed in a glass. In the picture display device using spacers, therefore, the spacers are effectively prevented from being electrically charged and, besides, trouble such as distortion in the displayed picture caused by the electric charge in the spacers is effectively prevented, too. In producing the spacers by firing, further, the volume expands due to the oxidation of the metal component, whereby shrinkage due to firing is effectively relaxed, making it possible to produce the spacers maintaining a high dimensional precision. Besides, the spacers are effectively prevented from being deformed by the shrinkage caused by firing.Type: GrantFiled: June 16, 2000Date of Patent: November 25, 2003Assignee: Kyocera CorporationInventors: Yasuhiko Nishioka, Yasuhito Muramoto, Masashi Kato, Kiyohiro Sakasegawa, Kazuo Watada, Akihiko Takahashi, Kouji Hamada
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Patent number: 6645318Abstract: The present invention provides: a fuel tank made of a ferritic stainless steel sheet having long lasting corrosion resistance under the environment of the fuel tank and excellent in formability when fabricating the fuel tank; more specifically, a fuel tank made of a ferritic stainless steel sheet containing 10 to 25 mass % of Cr and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy &Dgr;r of 1.0 or smaller, and a total elongation of 30% or larger, having a plane intensity ratio I(111)/I(100) of 10 or larger, and having lubricant films on the surfaces of the steel sheet and a surface friction coefficient of 0.10 or less.Type: GrantFiled: August 6, 2001Date of Patent: November 11, 2003Assignee: Nippon Steel CorporationInventors: Akihiko Takahashi, Shunji Sakamoto, Yuji Koyama, Katsuhiko Kato, Tadashi Komori, Naoto Ono, Masayuki Abe
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Publication number: 20030196715Abstract: The present invention provides a fuel tank or a fuel pipe excellent particularly in the corrosion resistance of the outer surface in a salt damage environment, and is a fuel tank or a fuel pipe excellent in corrosion resistance characterized by: being formed by using a steel sheet or a steel pipe containing Cr of 9.0 to 25.0 mass % as the base material; on the outer surface thereof, having any one or more of welded portions, brazed portions and structurally gapped portions contacting components; and having one or more of metals, whose electrode potential in a 5%-NaCl aqueous solution at 30° C. is −0.4 V or less relative to a saturated calomel electrode, attached to at least a part or parts of said portion(s) of the outer surface in an electrically conductive manner.Type: ApplicationFiled: January 31, 2003Publication date: October 23, 2003Inventors: Shunji Sakamoto, Akihiko Takahashi, Michio Kaneko, Toshio Tanoue, Kenji Kato, Naoto Ono, Masao Kikuchi
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Patent number: 6499784Abstract: In a motorcycle, a seat member includes a rider seat section and a pillion section which is continuous to a rear portion of the rider seat section and the article storage device is arranged below the seat member. The article storage device comprises an article storage box as a body of the storage device disposed below the seat member and an article access port formed to the article storage box and opened upward in an installed state of the storage box. A recessed portion protruding upward is formed at a central portion of a bottom surface of the article storage box, the bottom surface has a front side portion in front of a top portion of the recessed portion is inclined forward downward and the bottom surface also has a rear portion at the rear of the top portion of the recessed portion inclined rearward downward. The article access port has a rear edge portion positioned at the rear of the top portion of the recessed portion.Type: GrantFiled: June 21, 2001Date of Patent: December 31, 2002Assignee: Suzuki Kabushiki KaishaInventor: Akihiko Takahashi
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Publication number: 20020166050Abstract: An image processing apparatus records an input image signal into another recording medium or displays the input image signal on a display device. When a digital image signal having superimposed thereupon an electronic watermark is input, an identification circuit identifies the method employed to superimpose the electronic watermark. A decode circuit decodes the electronic watermark by employing the electronic watermark superimposing method identified by the identification circuit.Type: ApplicationFiled: July 17, 2001Publication date: November 7, 2002Applicant: NIKON CORPORATIONInventor: Akihiko Takahashi
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Publication number: 20020085100Abstract: An image-capturing device that captures a subject image through an exchangeable lens, a color sensor that receives the subject image and outputs color data and a white balance detection circuit that determines a white balance adjustment gain by using a correlated color temperature ascertained from the color data read out from the color sensor in correspondence to the focal point detection area used for a focal point detection at a focal point detection device are provided. If the average value of the color data read out from the color sensor does not indicate achromatic color data, the white balance detection circuit reads out the correlated color temperature having been obtained and stored in memory previously from the memory to determine the white balance adjustment R gain and the white balance adjustment B gain.Type: ApplicationFiled: July 17, 2001Publication date: July 4, 2002Applicant: NIKON CORPORATIONInventor: Akihiko Takahashi
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Patent number: 6398845Abstract: A method for purifying aluminum to provided which comprises the steps of maintaining aluminum as a starting material in a molten condition in N+1 vessels; wherein N+1 vessels for molten aluminum and N cooling bodies are provided which are immersed in molten aluminum in the vessels and upon which highly purified aluminum is crystallized on the surfaces thereof. The N+1 vessels are arranged sequentially from 1-st to (N+1)-th and the N cooling bodies are sequentially arranged from 1-st to N-th, respectively, and the vessels and cooling bodies are moved relative to each other.Type: GrantFiled: May 30, 2000Date of Patent: June 4, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroshi Tabuchi, Ichiro Tanaka, Akihiko Takahashi, Hidemitsu Shimizu
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Publication number: 20020012602Abstract: The present invention provides: a fuel tank made of a ferritic stainless steel sheet having long lasting corrosion resistance under the environment of the fuel tank and excellent in formability when fabricating the fuel tank; more specifically, a fuel tank made of a ferritic stainless steel sheet containing 10 to 25 mass % of Cr and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy &Dgr;r of 1.0 or smaller, and a total elongation of 30% or larger, having a plane intensity ratio I(111)/I(100) of 10 or larger, and having lubricant films on the surfaces of the steel sheet and a surface friction coefficient of 0.10 or less.Type: ApplicationFiled: August 6, 2001Publication date: January 31, 2002Inventors: Akihiko Takahashi, Shunji Sakamoto, Yuji Koyama, Katsuhiko Kato, Tadashi Komori, Naoto Ono, Masayuki Abe
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Publication number: 20020008397Abstract: In a motorcycle, a seat member includes a rider seat section and a pillion section which is continuous to a rear portion of the rider seat section and the article storage device is arranged below the seat member. The article storage device comprises an article storage box as a body of the storage device disposed below the seat member and an article access port formed to the article storage box and opened upward in an installed state of the storage box. A recessed portion protruding upward is formed at a central portion of a bottom surface of the article storage box, the bottom surface has a front side portion in front of a top portion of the recessed portion is inclined forward downward and the bottom surface also has a rear portion at the rear of the top portion of the recessed portion inclined rearward downward. The article access port has a rear edge portion positioned at the rear of the top portion of the recessed portion.Type: ApplicationFiled: June 21, 2001Publication date: January 24, 2002Applicant: SUZUKI KABUSHIKI KAISHAInventor: Akihiko Takahashi
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Patent number: 6335109Abstract: A safety device having a thin plate of a brittle material adapted to be ruptured by a difference between pressures exerted on opposite sides thereof; and a conductive path provided on the thin plate and adapted to be cut off by the rupture of the thin plate. One surface of the thin plate is present in a reference pressure chamber. The safety device with its reference pressure chamber being sealed is incorporated in a secondary battery. When the secondary battery is overcharged, the pressure difference between the opposite sides of the thin plate is increased, so that the thin plate is ruptured to cut off the conductive path.Type: GrantFiled: April 27, 1999Date of Patent: January 1, 2002Assignee: Kyocera CorporationInventors: Akihiko Takahashi, Shinichi Takemura, Yasuhiro Goto, Chitoshi Ueki