Patents by Inventor Kazuhiro Arakawa
Kazuhiro Arakawa 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: 7942647Abstract: An opening 22d of a supply/withdrawal passage 22b is positioned at the center part of the internal wall surface 22c of the operating chamber 26 (concave area 22a), and a pin 24 that protrudes toward the diaphragm 23 is provided in a position that is offset from the center of the wall surface 22c. When the diaphragm 23 is deformed toward the operating chamber 26 by the suction of an operation air into the operating chamber 26 during drawing in the chemical liquid, a part of the diaphragm 23 opposing to the pin 24 rides on the pin 24 and this part becomes a slightly convex shape toward the pump chamber 25. When the operation air is supplied from the opening 22d into the operating chamber 26 during the discharge of the chemical liquid, the deformation begins first from the part of the diaphragm 23 riding on the pin 24.Type: GrantFiled: September 26, 2005Date of Patent: May 17, 2011Assignees: Octec Inc., CKD CorporationInventors: Katsuya Okumura, Shigenobu Itoh, Kazuhiro Sugata, Kazuhiro Arakawa
-
Patent number: 7766341Abstract: A seal structure in which a sealing member 510 fitted in the seal holding part 120 is elastically deformed to hermetically seal a flow passage joining portion. The seal holding part 120 opening on a flow passage side and including a first retaining surface 121, a second retaining surface 122, and a circumferential surface 123. The sealing member 510 includes a first surface 511 in contact with the first retaining surface 121, a second surface 512 in contact with the retaining surface 122, and an inner surface 513 located inside the seal holding part 510 and tapered to have a diameter becoming smaller from the first surface 511 side to the second surface 512 side. An engagement portion 515 engaged in the seal holding part 120 is formed protruding from an outer surface 514 located on the circumferential surface 123 side and on the first surface 511 side.Type: GrantFiled: March 23, 2005Date of Patent: August 3, 2010Assignees: CKD Corporation, Octec, Inc.Inventors: Katsuya Okumura, Shoichi Kitagawa, Shigenobu Itoh, Kazuhiro Sugata, Kazuhiro Arakawa, Hiroshi Tomita
-
Publication number: 20080111321Abstract: A seal structure in which a sealing member 510 fitted in the seal holding part 120 is elastically deformed to hermetically seal a flow passage joining portion. The seal holding part 120 opening on a flow passage side and including a first retaining surface 121, a second retaining surface 122, and a circumferential surface 123. The sealing member 510 includes a first surface 511 in contact with the first retaining surface 121, a second surface 512 in contact with the retaining surface 122, and an inner surface 513 located inside the seal holding part 510 and tapered to have a diameter becoming smaller from the first surface 511 side to the second surface 512 side. An engagement portion 515 engaged in the seal holding part 120 is formed protruding from an outer surface 514 located on the circumferential surface 123 side and on the first surface 511 side.Type: ApplicationFiled: March 23, 2005Publication date: May 15, 2008Applicants: OTEC, INC, CKD CORPPRATIONInventors: Katsuya Okumura, Shoichi Kitagawa, Shigenobu Itoh, Kazuhiro Sugata, Kazuhiro Arakawa, Hiroshi Tomita
-
Publication number: 20080089794Abstract: An opening 22d of a supply/withdrawal passage 22b is positioned at the center part of the internal wall surface 22c of the operating chamber 26 (concave area 22a), and a pin 24 that protrudes toward the diaphragm 23 is provided in a position that is offset from the center of the wall surface 22c. When the diaphragm 23 is deformed toward the operating chamber 26 by the suction of an operation air into the operating chamber 26 during drawing in the chemical liquid, a part of the diaphragm 23 opposing to the pin 24 rides on the pin 24 and this part becomes a slightly convex shape toward the pump chamber 25. When the operation air is supplied from the opening 22d into the operating chamber 26 during the discharge of the chemical liquid, the deformation begins first from the part of the diaphragm 23 riding on the pin 24.Type: ApplicationFiled: September 26, 2005Publication date: April 17, 2008Applicants: OCTEC INC., CKD CORPORATIONInventors: Katsuya Okumura, Shigenobu Itoh, Kazuhiro Sugata, Kazuhiro Arakawa
-
Publication number: 20070297927Abstract: An opening 22d of a supply/withdrawal passage 22b is positioned at the center part of the internal wall surface 22c of the operating chamber 26 (concave area 22a), and a cross-shaped venting groove 22e extending from the opening 22d of the passage 22b to the periphery of the wall surface 22c is formed in the wall surface 22c. Thus, an operating air in the chamber 26 is discharged (sucked) through the passage 22b during drawing in the chemical liquid.Type: ApplicationFiled: July 29, 2005Publication date: December 27, 2007Applicants: Octec Inc., CKD CorporationInventors: Katsuya Okumura, Shigenobu Itoh, Kazuhiro Sugata, Kazuhiro Arakawa
-
Publication number: 20070258837Abstract: A pump unit for supplying chemical liquids capable of reducing the trapping of air bubbles and chemical liquids inside the chemical liquid passage of the unit while reducing the size by forming the pump and open/close valves in the vicinity of the pump into a single unit. The pump unit 10 is formed by integrally mounting a suction-side passage member 17 with which a suction-side shutoff valve 13 is assembled together and a discharge-side passage member 18 with which a discharge side shutoff valve 14 is assembled together on the pump 11 (pump housings 21, 22). Suction passages 17a and 21b and discharge passages 18a and 21c communicating with a pump chamber 25 are disposed on the same line L1.Type: ApplicationFiled: July 29, 2005Publication date: November 8, 2007Inventors: Katsuya Okumura, Kazuhiro Arakawa, Shigenobu Itoh
-
Patent number: 7262410Abstract: There is provided a sample observing apparatus for observing the surface of a sample by irradiating an electron beam thereto, having an electron gun for irradiating the electron beam to the surface of the sample, a potential control section for adjusting electric potential of the surface of the sample to potential set in advance by applying voltage determined based on an amount of electric charge on the surface of the sample to the sample, an electron detecting section for detecting electrons produced when the electron beam is irradiated to the surface of the sample and an appearance acquiring section for acquiring the appearance of surface of the sample per each spot on the surface based on the electrons detected by the electron detecting section.Type: GrantFiled: June 23, 2005Date of Patent: August 28, 2007Assignee: Advantest CorporationInventors: Masahiro Seyama, Masayuki Kuribara, Toshihiko Hara, Kazuhiro Arakawa, Toshimichi Iwai
-
Publication number: 20060006330Abstract: There is provided a sample observing apparatus for observing the surface of a sample by irradiating an electron beam thereto, having an electron gun for irradiating the electron beam to the surface of the sample, a potential control section for adjusting electric potential of the surface of the sample to potential set in advance by applying voltage determined based on an amount of electric charge on the surface of the sample to the sample, an electron detecting section for detecting electrons produced when the electron beam is irradiated to the surface of the sample and an appearance acquiring section for acquiring the appearance of surface of the sample per each spot on the surface based on the electrons detected by the electron detecting section.Type: ApplicationFiled: June 23, 2005Publication date: January 12, 2006Applicant: Advantest CorporationInventors: Masahiro Seyama, Masayuki Kuribara, Toshihiko Hara, Kazuhiro Arakawa, Toshimichi Iwai
-
Patent number: 4646062Abstract: A key input device is arranged such that a transparent keyboard is placed on a display unit for displaying characters and numerals so as to perform display and key input operations. Transparent electrodes are formed on the inner walls of a plurality of transparent sheets in the keyboard, and transparent projecting members as spacers are formed on one of the inner walls so as to prevent key input errors. The projecting members are constituted by transparent semispherical members formed on the inner wall of the transparent sheet disposed away from the light incident side, thereby improving readability of the displayed content on the display unit.Type: GrantFiled: July 26, 1984Date of Patent: February 24, 1987Assignee: Canon Kabushiki KaishaInventor: Kazuhiro Arakawa
-
Patent number: 4527862Abstract: A liquid crystal display keyboard has a keyboard which is arranged on a liquid crystal display and has upper and lower conductive films each having transparent electrodes arranged in spaced and facing relation to each other. An elastic member is arranged on the upper transparent conductive film.Type: GrantFiled: December 1, 1983Date of Patent: July 9, 1985Assignee: Canon Kabushiki KaishaInventor: Kazuhiro Arakawa
-
Patent number: D269278Type: GrantFiled: September 28, 1981Date of Patent: June 7, 1983Assignee: Canon Kabushiki KaishaInventors: Eiichi Yoshioka, Kazuhiro Arakawa