Patents by Inventor Takayoshi Yokoyama
Takayoshi Yokoyama 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: 20240103353Abstract: A stereoscopic lens apparatus includes two optical systems disposed in parallel. The two optical systems each include a front group, a reflection unit, and a rear group that are disposed in order from an object side to an image side, and an optical axis interval between the rear groups of the two optical systems is shorter than an optical axis interval between the front groups of the two optical systems due to optical path bending by the reflection unit. The rear groups of the two optical systems each include a movable unit that can be moved. The stereoscopic lens apparatus further includes a holder integrally holding the movable units of the two optical systems, and an actuator configured to drive the holder.Type: ApplicationFiled: September 13, 2023Publication date: March 28, 2024Inventor: Takayoshi YOKOYAMA
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Patent number: 11918717Abstract: A blood purification device includes a device body and a cassette. The cassette includes: a casing that accommodates a removal water receptacle; and pump tube. The device body includes fingers, a driving unit, and a housing. The cassette can be attached to and removed from the housing of the device body so that the pump tubes are positioned between the plurality of fingers and the outer surfaces of the casing.Type: GrantFiled: August 27, 2019Date of Patent: March 5, 2024Assignee: NIKKISO CO., LTD.Inventors: Takayoshi Yokoyama, Masato Fujiwara, Hiroshi Nimura
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Patent number: 11892708Abstract: A stereoscopic optical system includes two parallel optical systems that each include, in order from an object side to an image side, a front unit having a negative refractive power, an intermediate unit having two reflective surfaces, and a rear unit. A distance between optical axes of rear units is smaller than that between optical axes of front units in the two optical systems due to bending of an optical path by the two reflective surfaces. At least one of the intermediate unit and the rear unit has a positive refractive power. The front unit includes, in order from the object side to the image side, a first subunit consisting of one or more negative lenses disposed on the object side of a positive lens closest to an object in the front unit, and a second subunit having a positive power. A predetermined condition is satisfied.Type: GrantFiled: December 23, 2021Date of Patent: February 6, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Takayoshi Yokoyama, Kentaro Mori
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Publication number: 20230251460Abstract: An stereoscopic optical system includes two parallel optical systems arranged in parallel for a single common image sensor. Each optical system has an angle of view in which an image of another optical system is formed in a first area at an outer peripheral portion in an image circle, and includes a field stop in a second area at an inner peripheral portion in the image circle. A distance between centers of the image circles of the two optical systems is shorter than a diameter of each image circle on the image sensor, and at least part of each first area is located outside the image sensor.Type: ApplicationFiled: December 15, 2022Publication date: August 10, 2023Inventor: Takayoshi YOKOYAMA
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Publication number: 20230158219Abstract: A method for regenerating an adsorber which has a porous body and does not have an enzyme includes a dialysis step, in which the adsorber is connected to a dialysate circulation unit to cause uremic substances within a dialysate to be adsorbed onto the adsorber, and a regenerating step, in which the uremic substances which are adsorbed on the adsorber are desorbed by regenerating water that flows in a regenerating water flow unit. A dialysis system is equipped with the dialysate circulation unit, the adsorber, which is connected to the dialysate circulation unit, and the regenerating water flow unit. The regenerating water flow unit is connectable to the adsorber.Type: ApplicationFiled: January 24, 2023Publication date: May 25, 2023Inventors: Masato Fujiwara, Hiroshi Nimura, Takayoshi Yokoyama
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Patent number: 11583619Abstract: A method for regenerating an adsorber which has a porous body and does not have an enzyme includes a dialysis step, in which the adsorber is connected to a dialysate circulation unit to cause uremic substances within a dialysate to be adsorbed onto the adsorber, and a regenerating step, in which the uremic substances which are adsorbed on the adsorber are desorbed by regenerating water that flows in a regenerating water flow unit. A dialysis system is equipped with the dialysate circulation unit, the adsorber, which is connected to the dialysate circulation unit, and the regenerating water flow unit. The regenerating water flow unit is connectable to the adsorber.Type: GrantFiled: November 27, 2018Date of Patent: February 21, 2023Assignee: Nikkiso Co., Ltd.Inventors: Masato Fujiwara, Hiroshi Nimura, Takayoshi Yokoyama
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Publication number: 20230013707Abstract: An optical system includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a first reflective member, a second lens unit including an aperture diaphragm and having a positive refractive power, a second reflective member, and a third lens unit having a positive refractive power. Following inequalities are satisfied: ?1.27<(f1/f)/Npr<?0.70 0.60<f2/f3<1.60 where f represents a focal length of the optical system, f1 represents a focal length of the first lens unit, f2 represents a focal length of the second lens unit, f3 represents a focal length of the third lens unit, and NPr represents a refractive index of the first reflective member.Type: ApplicationFiled: June 17, 2022Publication date: January 19, 2023Inventor: Takayoshi Yokoyama
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Patent number: 11446418Abstract: A dialysate solution container includes a flexible first bag body. The dialysate solution container further includes a second bag body which has a mixing region for mixing a first powdered pharmaceutical agent and water at a lower end portion of a second interior. The second bag body further has a communication pipe that places the exterior of the second bag body and the second interior in communication, and a first filter which is in communication with a first interior of the first bag body. A first end of the communication pipe is capable of being connected to a dialysis circuit, and a second end thereof is disposed within the mixing region.Type: GrantFiled: December 11, 2018Date of Patent: September 20, 2022Assignee: Nikkiso Co., Ltd.Inventors: Hiroshi Nimura, Masato Fujiwara, Takayoshi Yokoyama
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Publication number: 20220221688Abstract: A stereoscopic optical system includes two parallel optical systems that each include, in order from an object side to an image side, a front unit having a negative refractive power, an intermediate unit having two reflective surfaces, and a rear unit. A distance between optical axes of rear units is smaller than that between optical axes of front units in the two optical systems due to bending of an optical path by the two reflective surfaces. At least one of the intermediate unit and the rear unit has a positive refractive power. The front unit includes, in order from the object side to the image side, a first subunit consisting of one or more negative lenses disposed on the object side of a positive lens closest to an object in the front unit, and a second subunit having a positive power. A predetermined condition is satisfied.Type: ApplicationFiled: December 23, 2021Publication date: July 14, 2022Inventors: Takayoshi Yokoyama, Kentaro Mori
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Patent number: 11204481Abstract: An optical system includes a first lens unit having positive refractive power, a second lens unit having positive refractive power that is moved during focusing, and a third lens unit having negative refractive power that are arranged in order from an object side to an image side. A distance between adjacent lens units on an optical axis of the optical system is varied during focusing. The first lens unit consists of a diffractive optical element and a negative lens that are arranged in order from the object side to the image side. The negative lens has a meniscus shape in which a concave surface faces the object side.Type: GrantFiled: May 2, 2019Date of Patent: December 21, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Takayoshi Yokoyama
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Publication number: 20210316055Abstract: A lid that retains a pump tube which is elastic; a finger driving unit that is disposed facing the lid with the pump tube interposed therebetween, and that causes a plurality of fingers to sequentially move in the direction of contacting and separating from the lid; and a pump tube opening/closing mechanism that causes the finger driving unit to advance towards and retract from the lid, and that closes and opens the pump tube which is disposed between the fingers and the lid.Type: ApplicationFiled: August 27, 2019Publication date: October 14, 2021Applicant: NIKKISO CO., LTD.Inventors: Takayoshi YOKOYAMA, Masato FUJIWARA, Hiroshi NIMURA
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Publication number: 20210170085Abstract: A blood purification device includes a device body and a cassette. The cassette includes: a casing that accommodates a removal water receptacle; and pump tube. The device body includes fingers, a driving unit, and a housing. The cassette can be attached to and removed from the housing of the device body so that the pump tubes are positioned between the plurality of fingers and the outer surfaces of the casing.Type: ApplicationFiled: August 27, 2019Publication date: June 10, 2021Applicant: NIKKISO CO., LTD.Inventors: Takayoshi YOKOYAMA, Masato FUJIWARA, Hiroshi NIMURA
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Patent number: 10895709Abstract: A lens apparatus includes an optical system L0 including a plurality of lenses. The optical system L0 is changeable to a first state in which a focal length of the optical system L0 is a first focal length and a second state in which the focal length is a second focal length shorter than the first focal length, by changing one or some of the plurality of lenses. The maximum image heights and maximum angle of views in the first state and the second state are substantially constant and satisfy a predetermined condition.Type: GrantFiled: February 12, 2019Date of Patent: January 19, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Maki Yokoya, Yoshihisa Tashiro, Takayoshi Yokoyama
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Publication number: 20200360588Abstract: A method for regenerating an adsorber which has a porous body and does not have an enzyme includes a dialysis step, in which the adsorber is connected to a dialysate circulation unit to cause uremic substances within a dialysate to be adsorbed onto the adsorber, and a regenerating step, in which the uremic substances which are adsorbed on the adsorber are desorbed by regenerating water that flows in a regenerating water flow unit. A dialysis system is equipped with the dialysate circulation unit, the adsorber, which is connected to the dialysate circulation unit and the regenerating water flow unit. The regenerating water flow unit is connectable to the adsorber.Type: ApplicationFiled: November 27, 2018Publication date: November 19, 2020Inventors: Masato Fujiwara, Hiroshi Nimura, Takayoshi Yokoyama
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Publication number: 20200324036Abstract: A dialysate solution container includes a flexible first bag body. The dialysate solution container further includes a second bag body which has a mixing region for mixing a first powdered pharmaceutical agent and water at a lower end portion of a second interior. The second bag body further has a communication pipe that places the exterior of the second bag body and the second interior in communication, and a first filter which is in communication with a first interior of the first bag body. A first end of the communication pipe is capable of being connected to a dialysis circuit, and a second end thereof is disposed within the mixing region.Type: ApplicationFiled: December 11, 2018Publication date: October 15, 2020Inventors: Hiroshi Nimura, Masato Fujiwara, Takayoshi Yokoyama
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Patent number: 10509928Abstract: An information collection system includes a plurality of radio tags and a reading device. Each of the radio tags stores identification information and includes a sensor, an antenna that receives a carrier wave from the reading device, and a data transmission unit that sends measurement data including the identification information and information obtained by the sensor to the reading device after the carrier wave is received by the antenna. The plurality of radio tags send the identification information and the information obtained by the sensor with different natural periods from the data transmission units. The reading device transmits the carrier wave to each of the radio tags, receives data from each of the radio tags, and obtains the data.Type: GrantFiled: July 23, 2018Date of Patent: December 17, 2019Assignees: FUJIFILM Corporation, THE UNIVERSITY OF TOKYOInventors: Yoshihisa Usami, Takayoshi Yokoyama, Yuki Owashi, Hiroyuki Matsui, Junichi Takeya
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Publication number: 20190346660Abstract: An optical system includes a first lens unit having positive refractive power, a second lens unit having positive refractive power that is moved during focusing, and a third lens unit having negative refractive power that are arranged in order from an object side to an image side. A distance between adjacent lens units on an optical axis of the optical system is varied during focusing. The first lens unit consists of a diffractive optical element and a negative lens that are arranged in order from the object side to the image side. The negative lens has a meniscus shape in which a concave surface faces the object side.Type: ApplicationFiled: May 2, 2019Publication date: November 14, 2019Inventor: Takayoshi Yokoyama
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Publication number: 20190258017Abstract: A lens apparatus includes an optical system L0 including a plurality of lenses. The optical system L0 is changeable to a first state in which a focal length of the optical system L0 is a first focal length and a second state in which the focal length is a second focal length shorter than the first focal length, by changing one or some of the plurality of lenses. The maximum image heights and maximum angle of views in the first state and the second state are substantially constant and satisfy a predetermined condition.Type: ApplicationFiled: February 12, 2019Publication date: August 22, 2019Inventors: Maki Yokoya, Yoshihisa Tashiro, Takayoshi Yokoyama
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Patent number: 10192296Abstract: An image pickup apparatus includes a controller configured to adjust a position of an image pickup plane from a position of a focal plane by correcting amounts based on image pickup environmental information, an image pickup element configured to capture an image on an adjusted position of the image pickup plane, and an image processor configured to restore the captured image utilizing an image restoration filter corresponding to the position of the image pickup plane.Type: GrantFiled: August 13, 2015Date of Patent: January 29, 2019Assignee: CANON KABUSHIKI KAISHAInventor: Takayoshi Yokoyama
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Publication number: 20190005282Abstract: An information collection system includes a plurality of radio tags and a reading device. Each of the radio tags stores identification information and includes a sensor, an antenna that receives a carrier wave from the reading device, and a data transmission unit that sends measurement data including the identification information and information obtained by the sensor to the reading device after the carrier wave is received by the antenna. The plurality of radio tags send the identification information and the information obtained by the sensor with different natural periods from the data transmission units. The reading device transmits the carrier wave to each of the radio tags, receives data from each of the radio tags, and obtains the data.Type: ApplicationFiled: July 23, 2018Publication date: January 3, 2019Applicants: FUJIFILM Corporation, THE UNIVERSITY OF TOKYOInventors: Yoshihisa USAMI, Takayoshi YOKOYAMA, Yuki OWASHI, Hiroyuki MATSUI, Junichi TAKEYA