Patents by Inventor Kenjiro Yamamoto

Kenjiro Yamamoto 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: 8239084
    Abstract: A moving device (70) determines an obstacle virtual existence region (72) of a simple graphic approximating a detected obstacle (71) to detect the obstacle (71) in a real time and determine a smooth avoidance path by calculation, thereby performing collision prediction.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: August 7, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Yamamoto, Saku Egawa, Takashi Tsubouchi, Jae Hoon Lee
  • Publication number: 20100235033
    Abstract: A moving device (70) determines an obstacle virtual existence region (72) of a simple graphic approximating a detected obstacle (71) to detect the obstacle (71) in a real time and determine a smooth avoidance path by calculation, thereby performing collision prediction.
    Type: Application
    Filed: September 10, 2007
    Publication date: September 16, 2010
    Inventors: Kenjiro Yamamoto, Saku Egawa, Takashi Tsubouchi, Jae Hoon Lee
  • Patent number: 6580075
    Abstract: A charged particle beam scanning inspecting apparatus for irradiating a charged particle beam, fetching information of a subject to be inspected at a predetermined beam scanning position and performing an inspection by processing the information. The apparatus is a measurer which measures a scanning position of the beam and an inspection position on said inspection subject to calculate beam target coordinates corrected for an apparatus error, an error correction constant and a deflected distortion correction constant, and a deflection controller for scanning the beam. The deflection controller includes a deflection position operating circuit for performing an operation of the inspection position in a deflection coordinate system, a deflected distortion operating circuit. The deflection position operating circuit and deflected distortion operating circuit are constructed in a pipe line fashion.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: June 17, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masatsugu Kametani, Kenjiro Yamamoto, Taku Ninomiya, Osamu Yamada, Katsuhisa Ike
  • Publication number: 20030062479
    Abstract: In order that the deflection scanning position can be corrected at a time point within a period for fetching information from a subject to be inspected and improvements in accuracy of chip comparison inspection and an inspection near the wafer outer periphery where distortion is large can be assured by correcting the inspection position and biased distortion at a high speed with high accuracy, a digital deflection control scheme is employed in which the deflection scanning signal and correction are all calculated digitally in a deflection controller for deflecting and controlling a charged particle beam irradiated onto a subject to be inspected and the digital value is sequentially converted into an analog value by a time-series train of digital control signal to form a deflection scanning waveform.
    Type: Application
    Filed: September 23, 2002
    Publication date: April 3, 2003
    Inventors: Masatsugu Kametani, Kenjiro Yamamoto, Taku Ninomiya, Osamu Yamada, Katsuhisa Ike
  • Patent number: 6538248
    Abstract: In order that the deflection scanning position can be corrected at a time point within a period for fetching information from a subject to be inspected and improvements in accuracy of chip comparison inspection and an inspection near the wafer outer periphery where distortion is large can be assured by correcting the inspection position and biased distortion at a high speed with high accuracy, a digital deflection control scheme is employed in which the deflection scanning signal and correction are all calculated digitally in a deflection controller for deflecting and controlling a charged particle beam irradiated onto a subject to be inspected and the digital value is sequentially converted into an analog value by a time-series train of digital control signal to form a deflection scanning waveform.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: March 25, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masatsugu Kametani, Kenjiro Yamamoto, Taku Ninomiya, Osamu Yamada, Katsuhisa Ike
  • Patent number: 6486472
    Abstract: The present invention aims to prevent degradation in performance due to a change in image quality and deflection distortions or the like in the vicinity of both ends of a scan area and detect a defect in a sample such as a semiconductor wafer or the like with high accuracy when the defect is inspected by use of an electron beam image, and allow a monitor to confirm an image area to be checked. The present invention is provided with means for comparing and checking defects in the sample, based on an image signal in which the neighborhoods of both ends of horizontal and vertical scan areas are respectively deleted under control of a blanking signal and a vertical synchronizing signal.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: November 26, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Gunji, Taku Ninomiya, Masatsugu Kametani, Masahiro Koyama, Kenjiro Yamamoto
  • Publication number: 20020117619
    Abstract: The present invention aims to prevent degradation in performance due to a change in image quality and deflection distortions or the like in the vicinity of both ends of a scan area and detect a defect in a sample such as a semiconductor wafer or the like with high accuracy when the defect is inspected by use of an electron beam image, and allow a monitor to confirm an image area to be checked. The present invention is provided with means for comparing and checking defects in the sample, based on an image signal in which the neighborhoods of both ends of horizontal and vertical scan areas are respectively deleted under control of a blanking signal and a vertical synchronizing signal.
    Type: Application
    Filed: August 30, 2001
    Publication date: August 29, 2002
    Inventors: Yasuhiro Gunji, Taku Ninomiya, Masatsugu Kametani, Masahiro Koyama, Kenjiro Yamamoto
  • Patent number: 5948913
    Abstract: Crystals of 3-?2-?4-(3-chloro-2-methylphenyl)-1-piperazinyl!ethyl!-5,6-dimethoxy-1-(4- imidazolylmethyl)-1H-indazole dihydrochloride which is a hydrate for pharmaceutical use having excellent characteristics as a pharmaceutical material that has high storage stability and which substantially has specified X-ray diffraction characteristics, more particularly, the dihydrochloride is 3.5-hydrate.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 7, 1999
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Kenjiro Yamamoto, Akihiko Miyadera, Hiroaki Kitaoka
  • Patent number: 5681954
    Abstract: A compound represented by formula (I): ##STR1## wherein Q represents an aryl group, a heterocyclic group, a diarylmethyl group, an aralkyl group composed of an aryl group and an alkylene group, an alkyl group or a cycloalkyl group, in which the aryl group, heterocyclic group, and the aryl moiety of the diarylmethyl group and aralkyl group may be substituted with one or more substituents; R represents a bicyclic, substituted, nitrogen-containing heterocyclic group or a substituted phenyl group, in which the nitrogen-containing heterocyclic group is composed of a 5-membered, substituted, aromatic or saturated ring containing one or two nitrogen atoms and a 6-membered ring; and Z represents an alkylene group, an alkenylene group, an alkylene group, a carbonyl group, an alkylene group containing a carbonyl group or an oxalyl group, or a salt thereof.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: October 28, 1997
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Kenjiro Yamamoto, Atsushi Hasegawa, Hideki Kubota, Masahiro Ando, deceased, Hitoshi Yamaguchi