Patents by Inventor Kohei Okuyama
Kohei Okuyama 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: 11951675Abstract: A surface of a workpiece has a smooth region, and a stepped region including a step. A three-dimensional object printing method includes first print operation of ejecting liquid from a head onto the smooth region, and second print operation, antecedent to or subsequent to the first print operation, of ejecting liquid from the head onto the stepped region. The amount of change in an angle of ejection, which is angle formed by a first normal line and a second normal line, during execution of the second print operation is larger than the amount of change in the angle of ejection during execution of the first print operation. The first normal line is a line normal to the ejection face. The second normal line is a line normal to the surface of the workpiece at a point of intersection with the first normal line.Type: GrantFiled: August 22, 2022Date of Patent: April 9, 2024Assignee: Seiko Epson CorporationInventors: Kohei Utsunomiya, Masayuki Okuyama, Yuki Ishii
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Patent number: 11779505Abstract: A finger exerciser includes: a frame on which a palm of a subject to be put; a movable section; a first fixing element; and a second fixing element. The movable is configured to move a first finger group of a subject. The first fixing element is configured to fix a position of the first finger group to the movable section. The second fixing element is configured to fix a position of a second finger group to the frame and has a band-like member including at least two attachment parts apart from each other in a longitudinal direction of the band-like member. The band-like member is attached to the frame at the attachment parts and includes a holder whose location to the frame is changeable. The band-like member is configured to hold the second finger group in a state where the band-like member is attached to the frame.Type: GrantFiled: October 19, 2018Date of Patent: October 10, 2023Assignees: Keio University, LIFESCAPES Inc.Inventors: Tomoyasu Ishimine, Miho Hiramoto, Kohei Okuyama
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Publication number: 20210369535Abstract: A finger exerciser includes: a frame on which a palm of a subject to be put; a movable section; a first fixing element; and a second fixing element. The movable is configured to move a first finger group of a subject. The first fixing element is configured to fix a position of the first finger group to the movable section. The second fixing element is configured to fix a position of a second finger group to the frame and has a band-like member including at least two attachment parts apart from each other in a longitudinal direction of the band-like member. The band-like member is attached to the frame at the attachment parts and includes a holder whose location to the frame is changeable. The band-like member is configured to hold the second finger group in a state where the band-like member is attached to the frame.Type: ApplicationFiled: October 19, 2018Publication date: December 2, 2021Inventors: Tomoyasu ISHIMINE, Miho HIRAMOTO, Kohei OKUYAMA
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Publication number: 20200329991Abstract: An electroencephalogram measurement system includes an acquisition unit, a decision unit, and an output unit. The acquisition unit acquires electroencephalogram information representing an electroencephalogram obtained by an electrode unit placed on a region of interest that forms part of a subject's head. The decision unit makes a decision, based on the electroencephalogram information acquired by the acquisition unit, whether or not there are any artifacts. The output unit outputs the decision made by the decision unit.Type: ApplicationFiled: October 19, 2018Publication date: October 22, 2020Inventors: Junichi USHIBA, Teruhisa OKUYA, Koji MORIKAWA, Mikio IWAKAWA, Miho HIRAMOTO, Kohei OKUYAMA
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Patent number: 8740332Abstract: An inkjet head driving method is a method for driving an inkjet head having a property in which heat is generated when a drive waveform is applied to a piezoelectric element section connected to a plurality of discharge nozzles. Based on drawing data, a discharge waveform, which is a drive waveform that causes discharging of ink, is applied to a driven nozzle for discharging the ink in a predetermined drive cycle, and a non-discharge waveform, which is a drive waveform that does not cause discharging of the ink, is applied to a non-driven nozzle other than the driven nozzle in the predetermined drive cycle.Type: GrantFiled: March 26, 2012Date of Patent: June 3, 2014Assignee: Seiko Epson CorporationInventor: Kohei Okuyama
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Publication number: 20120249637Abstract: An inkjet head driving method is a method for driving an inkjet head having a property in which heat is generated when a drive waveform is applied to a piezoelectric element section connected to a plurality of discharge nozzles. Based on drawing data, a discharge waveform, which is a drive waveform that causes discharging of ink, is applied to a driven nozzle for discharging the ink in a predetermined drive cycle, and a non-discharge waveform, which is a drive waveform that does not cause discharging of the ink, is applied to a non-driven nozzle other than the driven nozzle in the predetermined drive cycle.Type: ApplicationFiled: March 26, 2012Publication date: October 4, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Kohei OKUYAMA
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Patent number: 6136286Abstract: A carbon black having a ratio of a maximum absorbance in a range of 1800 to 1670 cm.sup.-1 to a maximum absorbance in a range of 1670 to 1500 cm.sup.-1 of not less than 0.65 on condition that a straight line interconnecting the absorbances at 1805 cm.sup.-1 and 900 cm.sup.-1 is taken as a base line in an absorbance chart of infrared absorption spectrum.Type: GrantFiled: March 26, 1997Date of Patent: October 24, 2000Assignee: Mitsubishi Chemical CorporationInventors: Kohei Okuyama, Mitsuo Suzuki
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Patent number: 6094338Abstract: Electric double-layer capacitor are disclosed having a non-aqueous solvent electrolyte; and a pair of polarized electrodes as positive and negative electrodes. These polarized electrodes have a rest potential nearly central between a substantial decomposition initiation voltage of the electrolyte on an oxidation or high-potential side and a substantial decomposition initiation voltage of the electrolyte on a reduction or low-potential side.Type: GrantFiled: July 8, 1998Date of Patent: July 25, 2000Assignee: Mitsubishi Chemical CorporationInventors: Satoshi Hirahara, Kohei Okuyama, Mitsuo Suzuki, Kazushi Matsuura
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Patent number: 6064560Abstract: Active carbon of which the pore size distribution as measured by a Cranston-Inkley method has a peak within each of ranges of from 10 to 20 .ANG. and from 20 to 100 .ANG..Type: GrantFiled: April 1, 1997Date of Patent: May 16, 2000Assignee: Mitsubishi Chemicals CorporationInventors: Satoshi Hirahara, Mitsuo Suzuki, Kohei Okuyama
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Patent number: 5965479Abstract: The present invention relates to an activated carbon comprising an activated carbon particle and titanium dioxide fine particles present at least on the surface thereof, which activated carbon contains substantially no carbon precursor on the surface thereof and has the lightness L value thereof of not more than 50.Type: GrantFiled: August 1, 1997Date of Patent: October 12, 1999Assignee: Mitsubishi Chemical CorporationInventors: Mitsuo Suzuki, Hiroyuki Aikyo, Satoshi Hirahara, Kazushi Matsuura, Kohei Okuyama
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Patent number: 5956225Abstract: An activated carbon has a specific surface area of pores with a pore diameter of not less than 20 .ANG. in the pore distribution determined from the nitrogen adsorption isotherm of not less than 1,000 m.sup.2 /g, and the ratio of the specific surface area of the pores with a pore diameter of not less than 20 .ANG. to the specific surface area of the whole pores of not less than 0.45.Type: GrantFiled: November 10, 1997Date of Patent: September 21, 1999Assignee: Mitsubishi Chemical CorporationInventors: Kohei Okuyama, Kazushi Matsuura, Yoshitaka Takeda, Yoshio Yoshino
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Patent number: 5586152Abstract: A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm..degree. C.Type: GrantFiled: May 25, 1995Date of Patent: December 17, 1996Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Mitsubishi Chemical CorporationInventors: Kimihiro Ioki, Kohei Okuyama, Kazuo Niwa, Hitoshi Seki
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Patent number: 5439080Abstract: A disc brake for a vehicle comprising a disc and pads, the disc being rotatable integrally with wheels and the pads capable of being brought into friction engagement with the disc. The disc comprises a baked carbon fiber reinforced carbon composite comprising dispersed bundles of short carbon fibers impregnated with a reinforcing material of primarily a pitch. The pads comprise a baked carbon fiber reinforced carbon composite comprising dispersed bundles of short carbon fibers impregnated with a reinforcing material of primarily a pyrolytic carbon and a thermosetting resin.Type: GrantFiled: July 28, 1994Date of Patent: August 8, 1995Assignees: Nissin Kogyo Co., Ltd., Mitsubishi Kasei Corp.Inventors: Ichiro Haneda, Tatsuyoshi Sakurai, Mashiro Yanagisawa, Kohei Okuyama, Kazuo Niwa, Toshihiro Fukagawa
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Patent number: 5398784Abstract: The present invention discloses a disc brake for a vehicle having a disc which is rotatable integrally with the wheels and pads which are brought into friction engagement with the disc. The disc is prepared by impregnating a reinforcing material into a carbon fiber reinforced carbon composite obtained by dispersing bundles of multiple single short carbon fibers with primarily a pitch, a combination of a pyrolytic carbon and a pitch or a combination of a pyrolytic carbon and a thermosetting resin, followed by baking; whereas the pads are prepared by impregnating a reinforcing material into a carbon fiber reinforced carbon composite obtained by dispersing bundles of multiple single short carbon fibers with primarily a combination of a pyrolytic carbon and a thermosetting resin or a combination of a pitch and a thermosetting resin, followed by baking.Type: GrantFiled: October 27, 1992Date of Patent: March 21, 1995Assignees: Nissin Kogyo Co., Ltd., Mitsubishi Kasei CorporationInventors: Ichiro Haneda, Tatsuyoshi Sakurai, Mashiro Yanagisawa, Kohei Okuyama, Kazuo Niwa, Toshihiro Fukagawa
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Patent number: 5390217Abstract: A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm.multidot..degree.C.Type: GrantFiled: April 24, 1992Date of Patent: February 14, 1995Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Mitsubishi Genshiryoku Kogyo Kabushiki Kaisha, Mitsubishi Kasei CorporationInventors: Kimihiro Ioki, Kohei Okuyama, Kazuo Niwa, Hitoshi Seki, Takanori Takahashi
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Patent number: 5077130Abstract: A carbon fiber-reinforced carbon composite material having a porosity of not higher than 20% prepared by subjecting a carbon fiber-reinforced carbon composite material having a porosity of from 25 to 95% to densification treatment, wherein the densification treatment is conducted with pyrolytic carbon formed by the pyrolysis of a halogenated hydrocarbon-containing gas at a temperature of from 400.degree. to 800.degree. C.Type: GrantFiled: July 18, 1989Date of Patent: December 31, 1991Assignee: Mitsubishi Kasei CorporationInventors: Kohei Okuyama, Kazushi Matsuura