Patents by Inventor Mariko Umeda
Mariko Umeda 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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Publication number: 20240095822Abstract: An information processing apparatus includes: a factual attribute determining unit that determines a factual attribute that can be confirmed to be a fact with respect to a user based on user-provided data having been provided by the user oneself or history data of the user; an inferred attribute determining unit which determines an inferred attribute having been inferred with respect to the user based on user-related data including at least the factual attribute related to the user; and a credit score inferring unit that infers a credit score to be set to the user based on an attribute data group including the factual attribute and the inferred attribute related to the user.Type: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Applicant: Rakuten Asia Pte. Ltd.Inventors: Gaurav KUMAR, Vishal KSHIRSAGAR, Tomohiko YAMASHITA, Daiki MACHIDA, Yin WU, Subrata GHOSH, Mariko KAWASAKI, Ashley JAIN, Takashi UMEDA
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Publication number: 20160102208Abstract: A water-soluble azo compound represented by formula (1) or a salt thereof. The water-soluble yellow dye (compound) has high solubility in water, and excellent fastness properties including water resistance, moisture resistance, ozone gas resistance, scratch resistance and light resistance, and has superior color-developing properties (printing density) and color saturation. A yellow ink composition which contains the yellow dye is used for various recording purposes, particularly inkjet recording purposes. In formula (1), Q represents a halogen atom; x represents an integer of 2 to 4; and Y represents a group represented by formula (A) or (B). In formula (B), n represents an integer of 1 to 4; and R represents a hydrogen atom, a sulfo group or a carboxy group.Type: ApplicationFiled: May 30, 2014Publication date: April 14, 2016Inventors: Rie TAKEUCHI, Mariko UMEDA
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Patent number: 8657432Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.Type: GrantFiled: February 16, 2009Date of Patent: February 25, 2014Assignee: Nippon Kayaku Kabushiki KaishaInventors: Shinsuke Shimizu, Mariko Umeda, Yoshiki Akatani
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Publication number: 20110007110Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.Type: ApplicationFiled: February 16, 2009Publication date: January 13, 2011Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Shinsuke Shimizu, Mariko Umeda, Yoshiki Akatani
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Patent number: 7746734Abstract: A tracking offset is reduced. The effect of an SPP signal fluctuation is reduced by using a variable mixing ratio DPP method, and a residual tracking offset is minimized.Type: GrantFiled: February 13, 2007Date of Patent: June 29, 2010Assignees: Hitachi, Ltd., Hitachi-LG Data Storage, Inc.Inventors: Mariko Umeda, Hiroyuki Minemura, Motoyuki Suzuki
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Patent number: 7558178Abstract: The amount of focus offset and the amount of spherical aberration correction are adjusted with respect to a disk on which no data is recorded with high precision. The amount of focus offset and the amount of spherical aberration correction are adjusted on the basis of (1) a focus error signal amplitude, (2) a tracking error signal amplitude in a wide track pitch region, and (3) a rectangular waveform wobble signal envelop level.Type: GrantFiled: August 2, 2005Date of Patent: July 7, 2009Assignee: Hitachi, Ltd.Inventors: Takahiro Kurokawa, Hiroyuki Minemura, Mariko Umeda, Harukazu Miyamoto
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Patent number: 7507283Abstract: The present invention relates to an aqueous dispersion of a water-insoluble coloring material having superior shelf life stability which is suitable to an ink for ink-jetting, an ink composition superior in shelf life stability and discharge property, a method for inkjet recording using said ink composition, and recorded article obtained thereby. Said aqueous dispersion is characterized by comprising a water-insoluble coloring material, water, an anionic dispersing agent, and an alkylene oxide adduct of phytosterols and/or an alkylene oxide adduct of cholestanols, and said ink composition is characterized by further comprising an organic solvent in addition to the above components.Type: GrantFiled: June 7, 2005Date of Patent: March 24, 2009Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshiki Akatani, Katsunori Fujii, Yuji Suzuki, Mariko Umeda, Tadahiko Tabe, Yoshiyuki Dejima
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Patent number: 7352673Abstract: A recording method and apparatus reduces jitter and increases the number of possible rewrites in an optical disc. When the absolute values of DSV values calculated for different DCC bits are equal, the selection of the DCC bit is carried out in a random manner, so that a different signal is recorded in each case on an optical disc medium even when the same user data is recorded. As a result, the deterioration of the marks and spaces is made uniform and the number of possible rewrites is increased.Type: GrantFiled: September 1, 2004Date of Patent: April 1, 2008Assignee: Hitachi, Ltd.Inventors: Mariko Umeda, Hiroyuki Minemura
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Publication number: 20080070009Abstract: The present invention relates to an aqueous dispersion of a water-insoluble coloring material having superior shelf life stability which is suitable to an ink for ink-jetting, an ink composition superior in shelf life stability and discharge property, a method for inkjet recording using said ink composition, and recorded article obtained thereby. Said aqueous dispersion is characterized by comprising a water-insoluble coloring material, water, an anionic dispersing agent, and an alkylene oxide adduct of phytosterols and/or an alkylene oxide adduct of cholestanols, and said ink composition is characterized by further comprising an organic solvent in addition to the above components.Type: ApplicationFiled: June 7, 2005Publication date: March 20, 2008Applicant: NIPPON KAYAKU KUBUSHIKI KAISHAInventors: Yoshiki Akatani, Katsunori Fujii, Yuji Suzuki, Mariko Umeda, Tadahiko Tabe, Yoshiyuki Dejima
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Publication number: 20070291600Abstract: A tracking offset is reduced. The effect of an SPP signal fluctuation is reduced by using a variable mixing ratio DPP method, and a residual tracking offset is minimized.Type: ApplicationFiled: February 13, 2007Publication date: December 20, 2007Inventors: Mariko UMEDA, Hiroyuki Minemura, Motoyuki Suzuki
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Publication number: 20060233070Abstract: The amount of focus offset and the amount of spherical aberration correction are adjusted with respect to a disk on which no data is recorded with high precision. The amount of focus offset and the amount of spherical aberration correction are adjusted on the basis of (1) a focus error signal amplitude, (2) a tracking error signal amplitude in a wide track pitch region, and (3) a rectangular waveform wobble signal envelop level.Type: ApplicationFiled: August 2, 2005Publication date: October 19, 2006Inventors: Takahiro Kurokawa, Hiroyuki Minemura, Mariko Umeda, Harukazu Miyamoto
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Patent number: 7068572Abstract: To stably carry out recording and reproducing to and from a high density optical disk without using a double servo in the optical disk using a high NA objective lens. A detection of a spherical aberration and a detection of a coma aberration in a radial direction are simultaneously performed, and the coma aberration generated with the offset of an objective lens 109 is corrected in real time, thus enlarging an allowable offset amount of the objective lens. In order to simultaneously detect the spherical aberration and the coma aberration, focal shift and tracking shift signals in an inside region and outside region of reflected light flux are detected respectively, and the differential signals are set as spherical aberration and coma aberration signals.Type: GrantFiled: September 7, 2004Date of Patent: June 27, 2006Assignee: Hitachi, Ltd.Inventors: Tetsuo Ariyoshi, Mariko Umeda, Takeshi Shimano
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Publication number: 20050207306Abstract: A recording method and apparatus reduces jitter and increases the number of possible rewrites in an optical disc. When the absolute values of DSV values calculated for different DCC bits are equal, the selection of the DCC bit is carried out in a random manner, so that a different signal is recorded in each case on an optical disc medium even when the same user data is recorded. As a result, the deterioration of the marks and spaces is made uniform and the number of possible rewrites is increased.Type: ApplicationFiled: September 1, 2004Publication date: September 22, 2005Inventors: Mariko Umeda, Hiroyuki Minemura
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Publication number: 20050025000Abstract: To stably carry out recording and reproducing to and from a high density optical disk without using a double servo in the optical disk using a high NA objective lens. A detection of a spherical aberration and a detection of a coma aberration in a radial direction are simultaneously performed, and the coma aberration generated with the offset of an objective lens 109 is corrected in real time, thus enlarging an allowable offset amount of the objective lens. In order to simultaneously detect the spherical aberration and the coma aberration, focal shift and tracking shift signals in an inside region and outside region of reflected light flux are detected respectively, and the differential signals are set as spherical aberration and coma aberration signals.Type: ApplicationFiled: September 7, 2004Publication date: February 3, 2005Inventors: Tetsuo Ariyoshi, Mariko Umeda, Takeshi Shimano
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Patent number: 6807133Abstract: To stably carry out recording and reproducing to and from a high density optical disk without using a double servo in the optical disk using a high NA objective lens. A detection of a spherical aberration and a detection of a coma aberration in a radial direction are simultaneously performed, and the coma aberration generated with the offset of an objective lens 109 is corrected in real time, thus enlarging an allowable offset amount of the objective lens. In order to simultaneously detect the spherical aberration and the coma aberration, focal shift and tracking shift signals in an inside region and outside region of reflected light flux are detected respectively, and the differential signals are set as spherical aberration and coma aberration signals.Type: GrantFiled: August 3, 2001Date of Patent: October 19, 2004Assignee: Hitachi, Ltd.Inventors: Tetsuo Ariyoshi, Mariko Umeda, Takeshi Shimano
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Patent number: 6653454Abstract: The present invention relates to a novel blue dye compound represented by Formula (1) as shown below, which can be synthesized without a dianisidine compound used for a raw material and can dye a cellulosic high molecular material to provide the blue dyed product that has a high color value, a good build-up and various kinds of good fastness; a method for dyeing a cellulosic high molecular material by using the same; and a cellulosic high molecular material dyed with the same. A formazan compound represented by (In Formula (1), R1 is hydrogen, sulfo, hydroxy, chloro, methoxy, carboxyl or alkyl; either of R2 and R3 is hydrogen and the other is sulfo; X is morpholino, 2-hydroxyethylamino or bis(2-hydroxyethyl)amino; and Y is a phenylene diimino represented by Formula (2) as shown below (In Formula (2), R4 is sulfo or carboxyl)) or the salt thereof.Type: GrantFiled: October 1, 2002Date of Patent: November 25, 2003Assignee: Nippon Kayaku Kabushiki KaishaInventors: Mariko Umeda, Hideshiro Nomura, Yasuo Shirasaki, Eiichi Ogawa
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Publication number: 20020176331Abstract: To stably carry out recording and reproducing to and from a high density optical disk without using a double servo in the optical disk using a high NA objective lens.Type: ApplicationFiled: August 3, 2001Publication date: November 28, 2002Inventors: Tetsuo Ariyoshi, Mariko Umeda, Takeshi Shimano
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Patent number: 5784347Abstract: An optical disk device having a light source for emitting light, focusing optics for radiating and focusing the light onto an optical recording medium, a photo-detection system for photoelectrically transforming reflected light from the optical recording medium, a reproduction circuit for reproducing information recorded on the optical recording medium by using an electric signal from the photo-detection system, phase control optics for changing the phase of the reflected light, a readout control circuit for controlling the quantity of the phase change of the phase control optics, and a learning control circuit for calculating the optimum value of the phase change quantity by monitoring the output signal of the reproduction circuit while changing the quantity of the phase change by the readout control circuit. Thus, information can be reproduced from a recording medium having high recording density without crosstalk.Type: GrantFiled: February 8, 1996Date of Patent: July 21, 1998Assignee: Hitachi, Ltd.Inventors: Harukazu Miyamoto, Takeshi Shimano, Hisataka Sugiyama, Mariko Umeda
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Patent number: 5511050Abstract: A focus error detecting method and an optical head using it. In the focus error detecting method, a light beam is emitted from a light source, the beam is given positive and negative astigmatism by a diffraction grating or an acoustooptic element in a focusing optical system, beams thus formed are focused on an information recording surface, the beams reflected from the information recording surface are received by photo-detecting elements in separated optics, the reflected beams with positive and negative astigmatism are compared with each other to take a difference in a focus error detecting circuit, and a focus error detecting signal is obtained on the basis of the difference. The focus for the optical head can be adjusted using the focus error detecting signal.Type: GrantFiled: May 24, 1991Date of Patent: April 23, 1996Assignee: Hitachi, Ltd.Inventors: Kiyoshi Matsumoto, Takeshi Maeda, Shigeru Nakamura, Mariko Umeda, Masuo Kasai
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Patent number: RE43018Abstract: A tracking offset is reduced. The effect of an SPP signal fluctuation is reduced by using a variable mixing ratio DPP method, and a residual tracking offset is minimized.Type: GrantFiled: March 17, 2011Date of Patent: December 13, 2011Assignees: Hitachi, Ltd., Hitachi-LG Data Storage, Inc.Inventors: Mariko Umeda, Hiroyuki Minemura, Motoyuki Suzuki