Patents by Inventor Katsuhiko Oka
Katsuhiko Oka 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).
-
Patent number: 8852259Abstract: A tubular medical treatment instrument indwelling device for indwelling a stent graft expandable in the radial direction, includes a tubular sheath, a rod member configured to move forward and backward inside the sheath along the axial direction of the sheath, and a front tip provided in the forward end portion of the rod member and includes, formed therein, an engaging portion being engageable with an engagement portion provided in the stent graft. The engaging portion is formed in a position where it is hided inside the sheath when the forward end portion of the sheath is sealed with the front tip. The tubular medical treatment instrument indwelling device is capable of inhibiting damaging of a blood vessel or freeing of parietal thrombus/parietal atheroma from occurring.Type: GrantFiled: May 25, 2010Date of Patent: October 7, 2014Assignees: Katsuhiko OKA, Yoshihiko Yokoi, Kawasumi Laboratories, Inc.Inventors: Katsuhiko Oka, Yoshihiko Yokoi, Kazumi Akita
-
Publication number: 20120116413Abstract: A tubular medical treatment instrument indwelling device for indwelling a stent graft expandable in the radial direction, includes a tubular sheath, a rod member configured to move forward and backward inside the sheath along the axial direction of the sheath, and a front tip provided in the forward end portion of the rod member and includes, formed therein, an engaging portion being engageable with an engagement portion provided in the stent graft. The engaging portion is formed in a position where it is hided inside the sheath when the forward end portion of the sheath is sealed with the front tip. The tubular medical treatment instrument indwelling device is capable of inhibiting damaging of a blood vessel or freeing of parietal thrombus/parietal atheroma from occurring.Type: ApplicationFiled: May 25, 2010Publication date: May 10, 2012Applicants: KATSUHIKO OKA, KAWASUMI LABORATORIES, INC, YOSHIHIKO YOKOIInventors: Katsuhiko Oka, Yoshihiko Yokoi, Kazumi Akita
-
Patent number: 7821177Abstract: A laminated core includes a laminated body, clamping plates and holding members. The laminated body includes a plurality of amorphous alloy plates, which are stacked one after another in a stacking direction such that each adjacent two of the plurality of amorphous alloy plates directly contact with each other. The clamping plates contact opposed end surfaces, respectively, of the laminated body in the stacking direction. A thickness of each of the first and second clamping plates in the stacking direction is larger than that of each of the plurality of amorphous alloy plates. Each holding member contacts with the clamping plates and maintains a predetermined space between the clamping plates while the laminated body is clamped between the clamping plates.Type: GrantFiled: February 22, 2008Date of Patent: October 26, 2010Assignee: Nippon Soken, Inc.Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Daisuke Miyata, Katsuhiko Oka
-
Patent number: 7814642Abstract: A method of manufacturing an electric rotating machine having a stator that includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding includes in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions outside the slots. The stator core includes a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.Type: GrantFiled: June 22, 2010Date of Patent: October 19, 2010Assignees: Nippon Soken, Inc., Denso CorporationInventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
-
Publication number: 20100257722Abstract: A method of manufacturing an electric rotating machine having a stator that includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding includes in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions outside the slots. The stator core includes a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.Type: ApplicationFiled: June 22, 2010Publication date: October 14, 2010Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
-
Patent number: 7759834Abstract: An electromagnetic device includes a plurality of coils formed by winding conductors. At least some of the conductors are constructed by stacking conductor constructional elements so that an eddy current generated by a leakage flux linked to the conductor is divided. An outer insulating member is disposed on an outer circumferential surface of the conductor stack for electrically insulating the conductor stack from another member. An inner insulating member whose thickness is smaller than a thickness of the outer insulating member is disposed between the conductor constructional elements adjoining to each other in the same conductor stack.Type: GrantFiled: July 5, 2007Date of Patent: July 20, 2010Assignees: Nippon Soken, Inc., Denso CorporationInventors: Sadahisa Onimaru, Hirofumi Kinjou, Katsuhiko Oka, Daisuke Miyata
-
Publication number: 20090261684Abstract: The stator of an electric rotating machine includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding including in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions at outside of the slots. The stator core including a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.Type: ApplicationFiled: April 15, 2009Publication date: October 22, 2009Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
-
Publication number: 20080231138Abstract: A laminated core includes a laminated body, clamping plates and holding members. The laminated body includes a plurality of amorphous alloy plates, which are stacked one after another in a stacking direction such that each adjacent two of the plurality of amorphous alloy plates directly contact with each other. The clamping plates contact opposed end surfaces, respectively, of the laminated body in the stacking direction. A thickness of each of the first and second clamping plates in the stacking direction is larger than that of each of the plurality of amorphous alloy plates. Each holding member contacts with the clamping plates and maintains a predetermined space between the clamping plates while the laminated body is clamped between the clamping plates.Type: ApplicationFiled: February 22, 2008Publication date: September 25, 2008Applicant: NIPPON SOKEN, INC.Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Daisuke Miyata, Katsuhiko Oka
-
Publication number: 20080007133Abstract: An electromagnetic device includes a plurality of coils formed by winding conductors. At least some of the conductors are constructed by stacking conductor constructional elements so that an eddy current generated by a leakage flux linked to the conductor is divided. An outer insulating member is disposed on an outer circumferential surface of the conductor stack for electrically insulating the conductor stack from another member. An inner insulating member whose thickness is smaller than a thickness of the outer insulating member is disposed between the conductor constructional elements adjoining to each other in the same conductor stack.Type: ApplicationFiled: July 5, 2007Publication date: January 10, 2008Applicant: NIPPON SOKEN, INC.Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Katsuhiko Oka, Daisuke Miyata
-
Publication number: 20050022977Abstract: A counter-stream-mode oscillating-flow heat transport apparatus accommodates a change in volume of a liquid while preventing reduction in heat transport capability. A flow path and a buffer tank are placed in communication with each other via a throttle such as a capillary tube. This prevents a channel connecting the flow path and the buffer tank from having an excessively reduced channel resistance (flow path resistance). This prevents the fluid in a heat transport device assembly (the flow path) from only going back and forth between the heat transport device assembly and the buffer tank without experiencing liquid (pressure) oscillations in the heat transport device assembly. Accordingly, the liquid in the heat transport device assembly is prevented from being reduced in amplitude of oscillation, thereby preventing degradation in heat transport capability of the counter-stream-mode oscillating-flow heat transport apparatus.Type: ApplicationFiled: June 11, 2004Publication date: February 3, 2005Inventors: Kimio Kohara, Seiji Inoue, Kenichi Nara, Koji Fujiki, Katsuhiko Oka, Tomoki Naganawa
-
Patent number: 4071642Abstract: A board-like porous material is coated with a polymerizable monomer over its upper and lower surfaces and is thereby immediately impregnated with the monomer. The material is then placed into shallow containers. A specified number of the containers containing the material are stacked, a lid is placed over the uppermost container, and the containers are hermetically closed by being held together by fastening means. The bottom wall of the container and the lid are each of a hollow structure and include a plurality of parallel partitions providing hot air passages arranged in parallel and having open front and rear ends. Finally, hot air is supplied to the passages to heat the containers, whereby the polymerizable monomer impregnating the material is vaporized, diffused through the material and then polymerized without application of pressure to the coated porous material.Type: GrantFiled: July 23, 1976Date of Patent: January 31, 1978Assignee: Asahi Fancy Plywood Co., Ltd.Inventor: Katsuhiko Oka