Patents by Inventor Kazuhiko Fujii
Kazuhiko Fujii 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: 11926904Abstract: Provided are an aqueous composition with which the surface of stainless steel is adequately roughened in an efficient manner with few steps, a method for roughening stainless steel, etc. The problem mentioned above is solved by an aqueous composition for roughening the surface of stainless steel, the aqueous composition including 0.1-20 mass % of hydrogen peroxide with reference to the total amount of the aqueous composition, 0.25-40 mass % of copper ions with reference to the total amount of the aqueous composition, and 1-30 mass % of halide ions with reference to the total amount of the aqueous composition.Type: GrantFiled: June 3, 2020Date of Patent: March 12, 2024Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Kazuhiko Ikeda, Tomoko Fujii, Hiroshi Matsunaga, Satoshi Tamai
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Patent number: 9862253Abstract: Automotive window glass to which a molding for sealing space between a car body and the window glass is to be attached, the window glass including, an attachment starting point mark indicating an attachment starting point of the molding, and at least one of a termination starting point mark and a termination last point mark in a specification range in which a termination of the molding, of which an attachment to the window glass being started from the attachment starting point, is to be placed.Type: GrantFiled: December 13, 2016Date of Patent: January 9, 2018Assignee: Central Glass Co., Ltd.Inventors: Kazuhiko Fujii, Takao Horie
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Publication number: 20170087965Abstract: Automotive window glass to which a molding for sealing space between a car body and the window glass is to be attached, the window glass including, an attachment starting point mark indicating an attachment starting point of the molding, and at least one of a termination starting point mark and a termination last point mark in a specification range in which a termination of the molding, of which an attachment to the window glass being started from the attachment starting point, is to be placed.Type: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Inventors: Kazuhiko FUJII, Takao HORIE
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Patent number: 9550411Abstract: Automotive window glass to which a molding for sealing space between a car body and the window glass is to be attached, the window glass including, an attachment starting point mark indicating an attachment starting point of the molding, and at least one of a termination starting point mark and a termination last point mark in a specification range in which a termination of the molding, of which an attachment to the window glass being started from the attachment starting point, is to be placed.Type: GrantFiled: November 19, 2014Date of Patent: January 24, 2017Assignee: Central Glass Co., Ltd.Inventors: Kazuhiko Fujii, Takao Horie
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Publication number: 20150137551Abstract: Automotive window glass to which a molding for sealing space between a car body and the window glass is to be attached, the window glass including, an attachment starting point mark indicating an attachment starting point of the molding, and at least one of a termination starting point mark and a termination last point mark in a specification range in which a termination of the molding, of which an attachment to the window glass being started from the attachment starting point, is to be placed.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Inventors: Kazuhiko FUJII, Takao HORIE
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Patent number: 7634961Abstract: A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce primary pressures supplied from a pilot pump to the pressure-reducing valves. Bleed-off lines connect pilot lines to tanks. Second throttles are disposed on the bleed-off lines, respectively, so as to moderate rises in the pilot pressures supplied to pilot ports of the control valve. The hydraulic circuit prevents detrimental effects such as deterioration of operability while ensuring shock absorption during quick operation.Type: GrantFiled: September 21, 2005Date of Patent: December 22, 2009Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Yutaka Toji, Masaaki Tachino, Kazuhiko Fujii
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Publication number: 20070277883Abstract: A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce primary pressures supplied from a pilot pump to the pressure-reducing valves. Bleed-off lines connect pilot lines to tanks. Second throttles are disposed on the bleed-off lines, respectively, so as to moderate rises in the pilot pressures supplied to pilot ports of the control valve. The hydraulic circuit prevents detrimental effects such as deterioration of operability while ensuring shock absorption during quick operation.Type: ApplicationFiled: September 21, 2005Publication date: December 6, 2007Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Tomohiko Asakage, Yutaka Toji, Masaaki Tachino, Kazuhiko Fujii
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Patent number: 7282145Abstract: The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through connecting members. Accordingly, the efficiency in each of manufacture, stock control and storage of the filter element can be improved, and the cost can be also reduced.Type: GrantFiled: January 26, 2006Date of Patent: October 16, 2007Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Kazuhiko Fujii, Saburo Mori, Tomoshige Tanaka
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Publication number: 20060124533Abstract: The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through connecting members. Accordingly, the efficiency in each of manufacture, stock control and storage of the filter element can be improved, and the cost can be also reduced.Type: ApplicationFiled: January 26, 2006Publication date: June 15, 2006Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.,Inventors: Tomohiko Asakage, Kazuhiko Fujii, Saburo Mori, Tomoshige Tanaka
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Patent number: 6837140Abstract: The present invention relates to a control system and method for a hydraulic working machine characterized by having a construction wherein a flow discharge control valve is disposed in a discharge-side pipe line of a main flow control valve, the amount of operation of an operating lever is converted to a pilot pressure by a remote controlled valve, the pilot pressure is then input to a controller and is calculated into a pressure change speed as operation speed, in a pressure change speed calculator, further, the operation speed is calculated into an electromagnetic valve current in an electromagnetic valve current calculator, then the electromagnetic proportional valve current is output to an electromagnetic proportional valve from a command unit, and the degree of opening of the discharge flow control valve is controlled with a secondary pressure in the electromagnetic proportional valve.Type: GrantFiled: February 3, 2003Date of Patent: January 4, 2005Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Hidekazu Oka, Kazuhiko Fujii, Naoki Sugano, Etsujiro Imanishi
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Publication number: 20030234213Abstract: The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through connecting members. Accordingly, the efficiency in each of manufacture, stock control and storage of the filter element can be improved, and the cost can be also reduced.Type: ApplicationFiled: June 3, 2003Publication date: December 25, 2003Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Tomohiko Asakage, Kazuhiko Fujii, Saburo Mori, Tomoshige Tanaka
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Publication number: 20030145721Abstract: The present invention relates to a control system and method for a hydraulic working machine characterized by having a construction wherein a flow discharge control valve is disposed in a discharge-side pipe line of a main flow control valve, the amount of operation of an operating lever is converted to a pilot pressure by a remote controlled valve, the pilot pressure is then input to a controller and is calculated into a pressure change speed as operation speed, in a pressure change speed calculator, further, the operation speed is calculated into an electromagnetic valve current in an electromagnetic valve current calculator, then the electromagnetic proportional valve current is output to an electromagnetic proportional valve from a command unit, and the degree of opening of the discharge flow control valve is controlled with a secondary pressure in the electromagnetic proportional valve.Type: ApplicationFiled: February 3, 2003Publication date: August 7, 2003Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTDInventors: Hidekazu Oka, Kazuhiko Fujii, Naoki Sugano, Etsujiro Imanishi
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Patent number: 5967758Abstract: A controlling device ensures an accurate control of the rotational speed of an engine. When a hydraulic working machine is in a suspended state, the rotational speed of the engine can be changed from a designated rotational speed to a low rotational speed without requiring any specific manipulation by the operator. When all control levers 14 to 21 are shifted to their respective neutral positions to suspend the operation, and the shifting speed of the control lever which is lastly shifted to its neutral position is low, a delay time is set to be longer than in the case of high shifting speed. If the control levers 14 to 21 are maintained in their respective neutral positions after the elapse of the delay time, the engine 1 is changed to the low rotational speed mode. When one of control levers is shifted before the elapse of the delay time, the engine 1 is continuously maintained in the designated rotational speed mode.Type: GrantFiled: July 21, 1997Date of Patent: October 19, 1999Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuhiko Fujii, Hideki Kinugawa, Hiroshi Togo
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Patent number: 5950430Abstract: In a construction machine of a small rotational inertia such as an intrawidth swing machine or a small-sized excavator, a rotative operability varies depending on the posture of a working attachment, and in a reduced state of reach, a change in rotating force is oversensitive to the operation of a working lever, so operation is difficult. To cope with this point, means for detecting the operation of a rotating direction control valve is provided, and an outlet of a center bypassing oil path in the rotating direction control valve and an oil tank are brought into communication with each other through a cut-off valve used for controlling the bleed-off thereof.Type: GrantFiled: June 30, 1997Date of Patent: September 14, 1999Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Yutaka Tohji, Kazuhiko Fujii, Kazuyuki Doi
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Patent number: 5272034Abstract: In accordance with the present invention, the electrophotographic toner is produced by dispersing and mixing toner components containing a fixing resin, a coloring agent and an electric charge controlling dye, and by melting and kneading the resulting mixture, which is then subjected to pulverizing and classifying. According to the present invention, fine powder generated at the pulverizing and classifying steps is reused as added to a mixture of toner components as already dispersed and mixed at the dispersing and mixing step, and the surface dye density of the electric charge controlling dye is in the range from 1.0.times.10.sup.-3 to 1.7.times.10.sup.-3 g/g, or the rate of the amount of an electric charge controlling dye present on the surfaces of toner particles to the total amount of the electric charge controlling dye, is in the range from 10 to 27% by weight.Type: GrantFiled: July 14, 1992Date of Patent: December 21, 1993Assignee: Mita Industrial Co., Ltd.Inventors: Nobuaki Kawano, Nobuyuki Tsuji, Takatomo Fukumoto, Kaoru Tanaka, Masanori Fujii, Atsushi Yamaguchi, Kazuhiko Fujii, Koji Okuda
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Patent number: 5239303Abstract: The invention relates to an antenna on a vehicle rear window glass for the reception of FM radio broadcasting and TV broadcasting in both the VHF and UHF bands. The window glass is provided with defogging heater strips, and the antenna uses a space left above the heater strips.Type: GrantFiled: December 12, 1991Date of Patent: August 24, 1993Assignee: Central Glass Company LimitedInventors: Tohru Hirotsu, Kazuhiko Fujii, Tokio Tsukada, Shingo Tadokoro
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Patent number: 5229780Abstract: The invention relates to an antenna on a vehicle rear window glass for the reception of FM radio broadcasting and TV broadcasting in both the VHF and UHF bands. The window glass is provided with defogging heater strips, and the antenna uses a space left above the heater strips.Type: GrantFiled: July 1, 1991Date of Patent: July 20, 1993Assignee: Central Glass Company, LimitedInventors: Tohru Hirotsu, Kazuhiko Fujii
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Patent number: 5220336Abstract: The invention provides a vehicle window glass antenna for transmission and reception of ultrashort waves used for mobile phones and/or personal radios. The antenna has a primary antenna which is a combination of at least two vertical (in the sense of perpendicular to a horizontal line) elements and at least two horizontal elements each of which directly connects with at least one of the vertical elements and a secondary antenna which is essentially a horizontally elongate element located in a space between the primary antenna and the lower or upper edge of the window glass. The primary antenna is arranged within a rectangular area having a limited horizontal width and a limited length, and the horizontal element of the secondary antenna has a limited length. The antenna feeder is a coaxial cable, and the primary antenna and the secondary antenna are connected with the inner conductor and the outer conductor of the coaxial cable, respectively.Type: GrantFiled: February 25, 1991Date of Patent: June 15, 1993Assignee: Central Glass Company, LimitedInventors: Tohru Hirotsu, Tokio Tsukada, Yoji Nagayama, Kazuhiko Fujii, Masao Shinnai, Kazuya Nishikawa
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Patent number: 5101627Abstract: An oil hydraulic circuit for a hydraulic shovel with which a composite operation can be performed readily and smoothly without special skill in operation of the hydraulic shovel. The oil hydraulic circuit comprises a first actuator which can operate with pressure oil from a predetermined one or both of a pair of hydraulic directional control valve sets, a second actuator which operates only with pressure oil from the other hydraulic directional control valve set, a proportional changing over device interposed intermediately in a pipe line communicating the other hydraulic directional control valve set with a first actuator for adjusting the maximum meter-in opening value to the first actuator in response to a magnitude of a signal received at a signal receiving portion of the proportional changing over device, and a controller for arbitrarily adjusting the signal to be supplied to the signal receiving portion of the proportional changing over device.Type: GrantFiled: December 22, 1989Date of Patent: April 7, 1992Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuhiko Fujii, Wataru Kubomoto, Hiroshi Shimokakiuchi, Sumio Kouchi
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Patent number: 5052179Abstract: Described herein is a hydraulic pump control circuit for travelling construction machine, the circuit being of the type including various hydraulic actuators divided into two groups to be driven by first and second pumps, respectively, left and right vehicle drive motors provided in the respective groups, and a change-over valve located on the discharge side of the first and second pumps and switchable to a position for supplying the oil pressure from the second pump in parallel to the left and right vehicle drive motors. According to the invention, the control circuit is provided with a pilot proportioning valve located between a discharge flow rate control regulator for the second pump and a pilot pressure source, and means for applying the pilot pressures acting on left and right vehicle drive valves to pilot ports of the pilot proportioning valve, the proportioning valve being operated by the sum of the pilot pressures applied to the pilot ports to produce a control pressure for the second pump regulator.Type: GrantFiled: March 16, 1990Date of Patent: October 1, 1991Assignee: Kabushiki Kaisha Kobe Seiko ShoInventor: Kazuhiko Fujii