Patents by Inventor Yukio Maekawa
Yukio Maekawa 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: 6936403Abstract: A recording medium which has, formed on a substrate, a recording layer that contains spherical grains having a substantially uniform grain size and including inorganic grains. Preferably, an undercoat layer having no substantial information recording ability is formed between the substrate and the recording layer.Type: GrantFiled: December 10, 2002Date of Patent: August 30, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Yukio Maekawa, Tatsuo Heki
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Publication number: 20030174638Abstract: A recording medium which has, formed on a substrate, a recording layer that contains spherical grains having a substantially uniform grain size and including inorganic grains. Preferably, an undercoat layer having no substantial information recording ability is formed between the substrate and the recording layer.Type: ApplicationFiled: December 10, 2002Publication date: September 18, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yukio Maekawa, Tatsuo Heki
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Patent number: 6538686Abstract: A communication terminal comprises a memory for storing a table in which data for identifying a destination of communication and a resolution of a display device of the destination are associated with each other, an image processor for generating image data with a resolution of the display device of the destination based on the table, and a transmission section for transmitting the image data generated by the image processor. By transmitting the image data with a resolution corresponding to the resolution of the display device of the destination, data volume to be communicated is reduced and wasteful power consumption of battery is suppressed in portable devices.Type: GrantFiled: January 5, 2001Date of Patent: March 25, 2003Assignee: Minolta Co., Ltd.Inventors: Yoshihiro Hara, Yukio Maekawa
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Patent number: 6406817Abstract: A crosslinked polymer with high ionic conductivity, an electrolyte using the crosslinked polymer and a process for producing the electrolyte, and a nonaqueous secondary battery using the electrolyte. Crosslinked polymers obtained by a crosslinking reaction between a compound having at least two substituents, in total, of at least one kind selected from the group consisting of &agr;,&bgr;-unsaturated sulfonyl, &agr;, &bgr;-unsaturated nitryl and &agr;,&bgr;-unsaturated carbonyl groups in its molecule and a compound having at least two nucleophilic groups in its molecule.Type: GrantFiled: June 30, 1999Date of Patent: June 18, 2002Assignee: Ube Industries, Ltd.Inventors: Koji Wariishi, Hideki Tomiyama, Yukio Maekawa
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Patent number: 6397008Abstract: A driving mechanism for holding and shifting a part to be driven. The mechanism has at least three carrying elements for carrying the part elastically by exerting force upon the part in directions generally perpendicular to an axis of the part, at least one of the carrying elements being of a actuating type including a frictional actuator, the frictional actuator having a contact face for contacting the part under the pressure, the contact face oscillating at high frequency so as to make the part move in a direction almost rectangular to that of exerting the force upon the part.Type: GrantFiled: December 14, 2000Date of Patent: May 28, 2002Assignee: Minolta Co., Ltd.Inventors: Minoru Kuwana, Junichi Tanii, Yukio Maekawa
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Publication number: 20020015894Abstract: A crosslinked polymer with high ionic conductivity, an electrolyte using the crosslinked polymer and a process for producing the electrolyte, and a nonaqueous secondary battery using the electrolyte.Type: ApplicationFiled: June 30, 1999Publication date: February 7, 2002Inventors: KOJI WARIISHI, HIDEKI TOMIYAMA, YUKIO MAEKAWA
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Publication number: 20010012051Abstract: A communication terminal comprises a memory for storing a table in which data for identifying a destination of communication and a resolution of a display device of the destination are associated with each other, an image processor for generating image data with a resolution of the display device of the destination based on the table, and a transmission section for transmitting the image data generated by the image processor. By transmitting the image data with a resolution corresponding to the resolution of the display device of the destination, data volume to be communicated is reduced and wasteful power consumption of battery is suppressed in portable devices.Type: ApplicationFiled: January 5, 2001Publication date: August 9, 2001Inventors: Yoshihiro Hara, Yukio Maekawa
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Publication number: 20010004420Abstract: A driving mechanism for holding and shifting a part to be driven. The mechanism has at least three carrying elements for carrying the part elastically by exerting force upon the part in directions generally perpendicular to an axis of the part, at least one of the carrying elements being of a actuating type including a frictional actuator, the frictional actuator having a contact face for contacting the part under the pressure, the contact face oscillating at high frequency so as to make the part move in a direction almost rectangular to that of exerting the force upon the part.Type: ApplicationFiled: December 14, 2000Publication date: June 21, 2001Applicant: MINOLTA CO., LTD.Inventors: Minoru Kuwana, Junichi Tanii, Yukio Maekawa
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Patent number: 6004695Abstract: A nonaqueous secondary battery having a high discharge voltage, a high discharge capacity, satisfactory charge and discharge cycle characteristics, and assured safety is disclosed, comprising a positive electrode material, a negative electrode material, a nonaqueous electrolyte containing a lithium salt, and a separator, wherein the negative electrode material mainly comprises an amorphous oxide containing at least one functional element selected from the group consisting of Sn, Mn, Fe, Pb, and Ge.Type: GrantFiled: September 29, 1997Date of Patent: December 21, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kensuke Goda, Yukio Miyaki, Yukio Maekawa, Masayuki Mishima
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Patent number: 6001139Abstract: This invention provides a cylinder type nonaqueous secondary battery which comprises a positive electrode active material comprising a lithium-containing transition metal oxide, a composite oxide or composite chalcogen negative electrode material capable of intercalating and deintercalating lithium and a nonaqueous electrolyte containing a lithium metal salt, wherein high discharging capacity and excellent charge and discharge cycle characteristics are obtained by mounting a metal foil mainly comprising lithium in advance in a coiled group in which a current collector sheet coated with the positive electrode active material (positive electrode sheet), another current collector sheet coated with the negative electrode material (negative electrode sheet) and a separator are coiled in a spiral form.Type: GrantFiled: July 10, 1997Date of Patent: December 14, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Asanuma, Hiroshi Inoue, Yukio Maekawa, Mitsutoshi Tanaka, Yukio Miyaki, Hiroshi Ishizuka, Shoichiro Yasunami, Kazuo Sugiyama
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Patent number: 5707756Abstract: The present invention provides a non-aqueous secondary battery having an improved charge and discharge cycle property and high discharge voltage, high energy density, high capacity and increased stability as well as an excellent high electric current atitude by using a lithium-containing transition metal oxide as a positive electrode material and at least one of the specfified composite oxides as a negative electrode material. Accordingly, the feature of the present invention consists in that the negative electrode material mainly consists of at least one member selected from the group consisting of amorphous chalcogen compounds and amorphous oxides containing at least three atoms selected from the group consisting of Group 13, 14, 15 and 2 atoms of Periodic Table.Type: GrantFiled: March 10, 1997Date of Patent: January 13, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Noriyuki Inoue, Yukio Maekawa, Tsutomu Miyasaka, Yoshikatsu Kagawa, Akihiro Matsufuji, Hideki Naito, Kensuke Goda, Osamu Takahashi, Toshiharu Nagamachi, Chuzo Kobayashi, Shoichiro Yasunami
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Patent number: 5572361Abstract: In a telescope, the adjustment order is limited so that dioptric power adjustment is made after adjustment of a distance between a pair of optical systems is completed. A pupil distance and a dioptric power correction amount are stored in a memory for every user. When a user uses the telescope, his or her pupil distance and dioptric power correction amount are read out from the memory to automatically make adjustment.Type: GrantFiled: October 16, 1992Date of Patent: November 5, 1996Assignee: Minolta Camera Kabushiki KaishaInventors: Makoto Kamiya, Katsuhito Akagi, Yukio Maekawa, Kazuo Kimura, Yoshiharu Ohta, Haruyuki Nagano, Ichiro Yoshiyama, Masataka Hamada, Kohtaro Hayashi, Keiji Yamazaki
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Patent number: 5543970Abstract: A zoom lens system according to the present invention comprises, from the object side to the image side, a first lens unit with a positive refractive power including a negative high dispersion lens element and a positive lens element; a second lens unit with a negative refractive power consisting of two or three lens elements including a positive high dispersion lens element and a negative lens element, and having at least one aspherical surface; and a third lens unit with a positive refractive power consisting of five or less lens elements including a negative high dispersion lens element and one or two positive lens elements located on the object side of the negative high dispersion lens element, and having at least one aspherical surface. With the lens arrangement, a compact high-zoom-ratio zoom lens system having a high aberration correction performance is realized.Type: GrantFiled: February 15, 1994Date of Patent: August 6, 1996Assignee: Minolta Camera Kabushiki KaishaInventors: Kazuyoshi Hata, Yukio Maekawa, Katsuhiro Takamoto, Manami Saka
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Patent number: 5350648Abstract: A nonaqueous secondary battery comprises an anode active material comprising a carbonaceous material, an electrolyte and a cathode active material comprising a lithium-containing transition metal chalcogenide. The carbonaceous material is obtained by burning a polyacrylonitrile fiber and has length of a crystallite in the c-axis direction of 75 to 250 .ANG. and an interval of 002 faces of 3.41 to 3.44 .ANG., the length and the interval being determined from an X-ray diffraction spectrum thereof using a Cu-K.alpha. ray.Type: GrantFiled: April 2, 1993Date of Patent: September 27, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshikatsu Kagawa, Shoichiro Yasunami, Yukio Maekawa
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Patent number: 5340672Abstract: A secondary battery containing at least a negative electrode, a positive electrode, an electrolyte comprising an alkaline metal salt dissolved therein, and a separator in which the said separator includes a high molecular solid electrolyte membrane formed by coating a latex on a porous membrane, and then drying the material. The separator may include a high molecular solid electrolyte membrane formed by coating a latex on both surfaces of a porous membrane, and then drying the material.Type: GrantFiled: July 2, 1993Date of Patent: August 23, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadahiko Kubota, Shoichiro Yasunami, Yukio Maekawa
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Patent number: 5122825Abstract: In a zoom camera having a zoom lens including a variator lens, and a driving system for driving the variator lens, the image magnification is computed in accordance with a predetermined program based on the detected object distance, and such a focal length is computed as to obtain a specified value of image magnification based on the detected object distance and the computed image magnification, and the obtained focal length data is fed to the driving system. As a result, auto-zooming with a suitable image magnification in accordance with the object distance can be achieved.Type: GrantFiled: August 2, 1990Date of Patent: June 16, 1992Assignee: Minolta Camera Kabushiki KaishaInventors: Hisashi Tokumaru, Hisayuki Masumoto, Takanobu Omaki, Takehiro Katoh, Yukio Maekawa
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Patent number: 5063147Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support and a light-sensitive silver halide emulsion layer provided on the support, wherein a surface layer provided on the photographic light-sensitive material contains an aliphatic carboxylic ester having the formula (I) or the formula (II):R.sup.11 COOR.sup.12 (I)in which each of R.sup.11 and R.sup.12 independently is an aliphatic hydrocarbon group having 12-70 carbon atoms; at least one of R.sup.11 and R.sup.12 is branched; and the number of the total carbon atoms contained in R.sup.11 and R.sup.12 is in the range of 32 to 140,R.sup.21 OOCXCOOR.sup.22 (II)in which each of R.sup.21 and R.sup.22 independently is an aliphatic hydrocarbon group having 12-70 carbon atoms; X is a divalent linking group; at least one of R.sup.21, R.sup.22 and X is a branched aliphatic hydrocarbon group having 12 or more carbon atoms; and the number of the total carbon atoms contained in R.sup.21 and R.sup.22 is in the range of 32 to 140.Type: GrantFiled: April 27, 1990Date of Patent: November 5, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Yoneyama, Ryosuke Yamada, Yosuke Nishiura, Yukio Maekawa, Yuzo Higaki, Yoshiaki Iwamoto
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Patent number: 5053225Abstract: A water-insoluble functional organic thin film comprising a binder selected from the group consisting of a high molecular weight organic compound and a lipid, having contained therein a biologically active protein and a polymer containing at least one functional group which forms covalent bonds with said biologically active protein.Type: GrantFiled: March 20, 1989Date of Patent: October 1, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Miyasaka, Yukio Maekawa
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Patent number: 4951075Abstract: In a zoom camera disclosed, a memory of an auto-zooming program lines is provided in which a relation between the object distance and the image mangification added with an element of the depth of field is set in a predetermined manner according to each kind of photographing mode, and such a focal length of a focusing lens is computed that the image mangification is set to be a predetermined value based on the object distance and a program line of a photographing mode selected by a user, whereby the focusing lens is driven so as to obtain the focal length. Consequently, auto-zoom photographing at a depth of field and an image magnification suitable for each kind of photographing mode can be achieved. Further, a memory of program lines set according to the vertical and horizontal camera attitudes in photographing is provided, and the image mangification can be changed over according to each camera attitude.Type: GrantFiled: January 6, 1989Date of Patent: August 21, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Hisashi Tokumaru, Hisayuki Masumoto, Yukio Maekawa
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Patent number: 4950405Abstract: A functional thin organic membrane comprising a monomolecular film which contains at least one organic amphoteric host molecule having a reactive functional group capable of chemically binding with a nucleophilic functional group at room temperature.Type: GrantFiled: October 18, 1989Date of Patent: August 21, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Miyasaka, Yukio Maekawa, Hisashi Okamura