Patents by Inventor Kengo Osawa
Kengo Osawa 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: 20230296874Abstract: An optical signal detection device includes an objective and a gel unit including a gel and an assisting member. The assisting member includes a first surface, a second surface, and an opening. The opening has a diameter smaller than an outer diameter of the gel and larger than an effective diameter of the objective. The first surface faces the gel, and a part of the first surface is fixed to a bottom surface of the gel by an adhesive force. A center of the bottom surface is not in contact with the assisting member. In a state where the gel unit is attached to a frame member of the objective, the second surface faces the frame member of the objective, a part of the first surface is fixed to the gel outside the effective diameter of the objective, and the gel is in close contact with the objective.Type: ApplicationFiled: March 2, 2023Publication date: September 21, 2023Applicant: Evident CorporationInventors: Yoshiharu SAITO, Kengo OSAWA, Daisuke NISHIWAKI
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Patent number: 11276523Abstract: An ignition coil includes a primary coil, a secondary coil, a primary bobbin, a secondary bobbin, a center core, and a mold resin. The center core has a pair of collar portions protruding from a main body of the center core respectively to opposite sides in a protruding direction. The primary bobbin has a collar portion at least partially sandwiched between the collar portions of the center core and the secondary bobbin in a coil axial direction. The collar portion of the primary bobbin includes an overlapping portion that overlaps the collar portions of the center core in the coil axial direction and is bonded to the collar portions. The primary bobbin is formed of a thermoplastic resin and dispersed-phase particles dispersed in the thermoplastic resin. In the overlapping portion of the primary bobbin, there is formed a specific separating layer that separates adjacent layers in the coil axial direction.Type: GrantFiled: October 5, 2018Date of Patent: March 15, 2022Assignee: DENSO CORPORATIONInventors: Kengo Osawa, Masahiro Inagaki
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Patent number: 11067782Abstract: An objective includes the first and second groups. The first group includes the first cemented lens with a concave surface facing the object side, the first and second single lenses having positive power, and the second cemented lens with a concave surface facing an image side. The second group includes the third cemented lens with a concave surface facing the object side and a third single lens having positive power. Each of the cemented lenses combines one positive lens with one negative lens. The objective satisfies the following expressions. 0.31?NA<1??(1) 2.2?H/f?3.3??(2) 0<a/b?1.2??(3) Here, NA is a numerical aperture, f is a focal length at e-line, H is a distance from an object surface to a lens surface closest to an image, a is the sum of air-gap distances in the first group, and b is a thickness of a negative lens in the second cemented lens.Type: GrantFiled: February 27, 2019Date of Patent: July 20, 2021Assignee: OLYMPUS CORPORATIONInventor: Kengo Osawa
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Patent number: 11048071Abstract: A dry microscope objective with a 20-fold magnification or lower that includes a first lens group having a positive refractive power and a second lens group having a positive refractive power, wherein the first and second lens groups have concave surfaces adjacent to each other and facing each other, and the microscope objective satisfies the following conditional expressions: 1.4?(Wz(1)?Wz(0))/DOFd?2.3??(1) 0?WCRMS(Fiy)?0.1?d (0?Fiy?0.7)??(2) where Wz indicates a function of a d-line optimization position that is an longitudinal position at which an RMS wavefront aberration in a d line at the object height ratio is minimized; DOFd indicates a depth of focus for the d line; WCRMS indicates a function of an RMS wavefront aberration in a C line that occurs at the d-line optimization position; Fiy indicates the object height ratio; and ?d indicates the wavelength of the d line.Type: GrantFiled: April 9, 2019Date of Patent: June 29, 2021Assignee: OLYMPUS CORPORATIONInventors: Yasuo Yonemaru, Kengo Osawa
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Patent number: 10938095Abstract: A vehicle antenna device includes an antenna base, an antenna case that covers the antenna base, and an antenna element positioned inside the antenna case and including a capacitive element and a coil element. The coil element includes a supporting body and a winding held by the supporting body, and the supporting body has a support area and projections that are formed along an axial direction of the coil element and hold the winding in the support area.Type: GrantFiled: August 22, 2019Date of Patent: March 2, 2021Assignee: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa
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Patent number: 10680317Abstract: A vehicle antenna device has a stably held coil element while its winding shape is maintained, and the number of turns of the coil element winding is easily adjusted during production. A coil element is configured by forming a winding around a resin-made bobbin. A guide groove, which is a path of the winding, and a plurality of projections, which are along the path of the winding, are disposed on the outer circumferential surface of the winding barrel of the bobbin. The guide groove spirally extends around the outer circumferential surface of the winding barrel. The projections are disposed in plural numbers in each of a plurality of circumferential positions on the outer circumferential surface of the winding barrel. A winding end portion of the winding is drawn out in the axial direction while being hooked to an arbitrary one of the projections, and electrically connected to an upper terminal.Type: GrantFiled: May 31, 2019Date of Patent: June 9, 2020Assignee: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa
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Publication number: 20190379108Abstract: A vehicle antenna device includes an antenna base, an antenna case that covers the antenna base, and an antenna element positioned inside the antenna case and including a capacitive element and a coil element. The coil element includes a supporting body and a winding held by the supporting body, and the supporting body has a support area and projections that are formed along an axial direction of the coil element and hold the winding in the support area.Type: ApplicationFiled: August 22, 2019Publication date: December 12, 2019Applicant: YOKOWO CO., LTD.Inventors: Sadao OHNO, Kengo OSAWA
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Publication number: 20190324251Abstract: A dry microscope objective with a 20-fold magnification or lower that includes a first lens group having a positive refractive power and a second lens group having a positive refractive power, wherein the first and second lens groups have concave surfaces adjacent to each other and facing each other, and the microscope objective satisfies the following conditional expressions: 1.4?(Wz(1)?Wz(0))/DOFd?2.3??(1) 0?WCRMS(Fiy)?0.1?d (0?Fiy?0.7)??(2) where Wz indicates a function of a d-line optimization position that is an longitudinal position at which an RMS wavefront aberration in a d line at the object height ratio is minimized; DOFd indicates a depth of focus for the d line; WCRMS indicates a function of an RMS wavefront aberration in a C line that occurs at the d-line optimization position; Fiy indicates the object height ratio; and ?d indicates the wavelength of the d line.Type: ApplicationFiled: April 9, 2019Publication date: October 24, 2019Applicant: OLYMPUS CORPORATIONInventors: Yasuo YONEMARU, Kengo OSAWA
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Publication number: 20190324248Abstract: An objective includes the first and second groups. The first group includes the first cemented lens with a concave surface facing the object side, the first and second single lenses having positive power, and the second cemented lens with a concave surface facing an image side. The second group includes the third cemented lens with a concave surface facing the object side and a third single lens having positive power. Each of the cemented lenses combines one positive lens with one negative lens. The objective satisfies the following expressions. 0.31?NA<1??(1) 2.2?H/f?3.3??(2) 0<a/b?1.2??(3) Here, NA is a numerical aperture, f is a focal length at e-line, H is a distance from an object surface to a lens surface closest to an image, a is the sum of air-gap distances in the first group, and b is a thickness of a negative lens in the second cemented lens.Type: ApplicationFiled: February 27, 2019Publication date: October 24, 2019Applicant: OLYMPUS CORPORATIONInventor: Kengo OSAWA
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Patent number: 10431880Abstract: A vehicle antenna device has a stably held coil element while its winding shape is maintained, and the number of turns of the coil element winding is easily adjusted during production. A coil element is configured by forming a winding around a resin-made bobbin. A guide groove, which is a path of the winding, and a plurality of projections, which are along the path of the winding, are disposed on the outer circumferential surface of the winding barrel of the bobbin. The guide groove spirally extends around the outer circumferential surface of the winding barrel. The projections are disposed in plural numbers in each of a plurality of circumferential positions on the outer circumferential surface of the winding barrel. A winding end portion of the winding is drawn out in the axial direction while being hooked to an arbitrary one of the projections, and electrically connected to an upper terminal.Type: GrantFiled: April 10, 2015Date of Patent: October 1, 2019Assignee: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa
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Publication number: 20190288380Abstract: A vehicle antenna device has a stably held coil element while its winding shape is maintained, and the number of turns of the coil element winding is easily adjusted during production. A coil element is configured by forming a winding around a resin-made bobbin. A guide groove, which is a path of the winding, and a plurality of projections, which are along the path of the winding, are disposed on the outer circumferential surface of the winding barrel of the bobbin. The guide groove spirally extends around the outer circumferential surface of the winding barrel. The projections are disposed in plural numbers in each of a plurality of circumferential positions on the outer circumferential surface of the winding barrel. A winding end portion of the winding is drawn out in the axial direction while being hooked to an arbitrary one of the projections, and electrically connected to an upper terminal.Type: ApplicationFiled: May 31, 2019Publication date: September 19, 2019Applicant: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa
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Patent number: 10283863Abstract: A composite antenna includes: a coil element which is formed into a spiral shape, and which has a trap coil portion in a base end portion; a tubular conductive element which is electrically series-connected to a base end of the coil element; and a connection metal fitting which is electrically connected to a base end of the conductive element. A series connection of the coil element and the tubular conductive element operates in a first frequency band, and the tubular conductive element alone operates in a second frequency band which is higher than the first frequency band.Type: GrantFiled: July 13, 2015Date of Patent: May 7, 2019Assignee: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa, Takashi Nozaki, Kenichi Tanaka
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Patent number: 10276927Abstract: A vehicle antenna device includes: an antenna base; an antenna case which is overlaid on the antenna base; and an antenna element and an amplifier board which are disposed inside the antenna case. The antenna element has a capacitive element and a coil element, and a filter board is disposed between the capacitive element and the coil element.Type: GrantFiled: May 20, 2015Date of Patent: April 30, 2019Assignee: YOKOWO CO., LTD.Inventors: Sadao Ohno, Kengo Osawa
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Publication number: 20190122815Abstract: An ignition coil includes a primary coil, a secondary coil, a primary bobbin, a secondary bobbin, a center core, and a mold resin. The center core has a pair of collar portions protruding from a main body of the center core respectively to opposite sides in a protruding direction. The primary bobbin has a collar portion at least partially sandwiched between the collar portions of the center core and the secondary bobbin in a coil axial direction. The collar portion of the primary bobbin includes an overlapping portion that overlaps the collar portions of the center core in the coil axial direction and is bonded to the collar portions. The primary bobbin is formed of a thermoplastic resin and dispersed-phase particles dispersed in the thermoplastic resin. In the overlapping portion of the primary bobbin, there is formed a specific separating layer that separates adjacent layers in the coil axial direction.Type: ApplicationFiled: October 5, 2018Publication date: April 25, 2019Inventors: Kengo Osawa, Masahiro Inagaki
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Publication number: 20170237167Abstract: A composite antenna includes: a coil element which is formed into a spiral shape, and which has a trap coil portion in a base end portion; a tubular conductive element which is electrically series-connected to a base end of the coil element; and a connection metal fitting which is electrically connected to a base end of the conductive element. A series connection of the coil element and the tubular conductive element operates in a first frequency band, and the tubular conductive element alone operates in a second frequency band which is higher than the first frequency band.Type: ApplicationFiled: July 13, 2015Publication date: August 17, 2017Applicant: YOKOWO CO., LTD.Inventors: Sadao OHNO, Kengo OSAWA, Takashi NOZAKI, Kenichi TANAKA
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Publication number: 20170214129Abstract: A vehicle antenna device includes: an antenna base; an antenna case which is overlaid on the antenna base; and an antenna element and an amplifier board which are disposed inside the antenna case. The antenna element has a capacitive element and a coil element, and a filter board is disposed between the capacitive element and the coil element.Type: ApplicationFiled: May 20, 2015Publication date: July 27, 2017Applicant: YOKOWO CO., LTD.Inventors: Sadao OHNO, Kengo OSAWA
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Publication number: 20170207520Abstract: A vehicle antenna device has a stably held coil element while its winding shape is maintained, and the number of turns of the coil element winding is easily adjusted during production. A coil element is configured by forming a winding around a resin-made bobbin. A guide groove, which is a path of the winding, and a plurality of projections, which are along the path of the winding, are disposed on the outer circumferential surface of the winding barrel of the bobbin. The guide groove spirally extends around the outer circumferential surface of the winding barrel. The projections are disposed in plural numbers in each of a plurality of circumferential positions on the outer circumferential surface of the winding barrel. A winding end portion of the winding is drawn out in the axial direction while being hooked to an arbitrary one of the projections, and electrically connected to an upper terminal.Type: ApplicationFiled: April 10, 2015Publication date: July 20, 2017Applicant: YOKOWO CO., LTD.Inventors: Sadao OHNO, Kengo OSAWA
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Patent number: 5732152Abstract: In an area of a tablet where a handwritten character is written for entry, the result of the recognition of the handwritten character is displayed by replacing the handwritten character written therein; at the same time, the recognition result is also displayed in a display field that can display more characters than can be shown in the handwritten character entry area at one time.Type: GrantFiled: January 16, 1997Date of Patent: March 24, 1998Assignee: Fujitsu LimitedInventors: Satomi Sakai, Kengo Osawa