Patents by Inventor Tsutomu Itoh

Tsutomu Itoh 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: 9507724
    Abstract: A memory access processing method includes storing, in a cache memory, a plurality of pages stored in a main memory; storing the plurality of pages in a buffer memory, each of the plurality of pages being associated with an identifier indicating whether the each of the plurality of pages being a zero page to be zero-cleared; allocating a page to be set to a zero page, when a page fault occurs during execution of an access to the cache memory and execution of a process is stopped; updating an identifier corresponding to the allocated page to an identifier indicating the allocated page being the zero page; resuming the execution of the process; controlling an access to the cache memory, based on the identifier for each of the plurality of pages; and executing initialization of a page corresponding to the allocated page and is included in the main memory.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: November 29, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyuki Kamezawa, Yasuo Ueda, Tsutomu Itoh, Hideo Shitaya, Yasunori Goto, Miyako Uchida, Ken Ichikawa, Hidetoshi Seto
  • Publication number: 20160062902
    Abstract: A memory access processing method includes storing, in a cache memory, a plurality of pages stored in a main memory; storing the plurality of pages in a buffer memory, each of the plurality of pages being associated with an identifier indicating whether the each of the plurality of pages being a zero page to be zero-cleared; allocating a page to be set to a zero page, when a page fault occurs during execution of an access to the cache memory and execution of a process is stopped; updating an identifier corresponding to the allocated page to an identifier indicating the allocated page being the zero page; resuming the execution of the process; controlling an access to the cache memory, based on the identifier for each of the plurality of pages; and executing initialization of a page corresponding to the allocated page and is included in the main memory.
    Type: Application
    Filed: August 3, 2015
    Publication date: March 3, 2016
    Inventors: Hiroyuki KAMEZAWA, Yasuo UEDA, TSUTOMU ITOH, Hideo Shitaya, Yasunori Goto, Miyako Uchida, Ken Ichikawa, Hidetoshi Seto
  • Publication number: 20060090055
    Abstract: A storage management apparatus comprises a storage pool management section that selects storages having desired characteristics from a storage pool including storages for which different characteristics are required and a virtual storage construction section that associates the selected storages with one virtual storage.
    Type: Application
    Filed: December 8, 2005
    Publication date: April 27, 2006
    Applicant: Fujitsu Limited
    Inventor: Tsutomu Itoh
  • Patent number: 6176647
    Abstract: A miniaturized, inexpensive instrument for measuring the mass flow rate of powder, which is capable of directly outputting the mass flow rate of powder and whose characteristics are not influenced by the kind and physical properties of the powder. The instrument can be easily manufactured, installed, operated, maintained, and color change can be easily done. A constant powder feeder, which is constructed based on this instrument and an electrostatic powder coating system utilizing this feeder has a high performance and a high operational efficiency. A measuring gas with a regulated flow rate is turned into a thin-layer of high-speed gas jets by a dispersion means, thereby powder is cross-dispersed and introduced into a measuring tube, the pressure difference generated therein is measured, and a feeding means is subject to feedback control so that the output of the pressure difference coincides with a set value.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: January 23, 2001
    Assignee: RID Corporation
    Inventor: Tsutomu Itoh
  • Patent number: 5557736
    Abstract: In an electronic mail associated type computer system network equipped with a computer system for executing a job and a general-purpose electronic mail system, a user of an electronic mail can freely recognize a condition of an execution result of a job performed in the computer system and a job execution result. Also, these results are available from a desired output device for the user. When a mail processing unit employed in the computer system analyzes a mail statement about the job execution derived from the electronic mail system, and the job execution is completed, this mail processing unit sends to the electronic mail system, such a mail statement for the completion of the job execution containing information about fail/safe execution result. Upon receipt of this report, the user designates the output device into a response mail so as to output the job execution result from the designated output device.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 17, 1996
    Assignees: Hitachi Electronics Services Co., Ltd., Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.
    Inventors: Toshio Hirosawa, Tsutomu Itoh, Motohide Kokunishi, Atsushi Ueoka, Yoshikazu Ichikawa, Fujio Fujita, Tadashi Yamagishi, Masahiko Ishimaru, Hideki Namba, Shigeru Sasaki, Michio Hirano, Kaoru Kozuma, Kazuyuki Nakamura
  • Patent number: 5465354
    Abstract: A job execution prediction control method and apparatus in a computer system having a CPU. Information on processing amounts of a plurality of parallelly executed jobs is collected during execution of the respective jobs. Predicted execution end times of the respective jobs are calculated on the basis of the collected information. Subsequent processing speeds of the respective jobs are controlled on the basis of the predicted execution end times calculated for the respective jobs and target execution end times of the respective jobs.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: November 7, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Hirosawa, Jun'ichi Kurihara, Tsutomu Itoh, Motohide Kokunishi
  • Patent number: 5340023
    Abstract: A plasma flame flowing to a substrate around a beam of melt droplets is trimmed by spraying a refrigerant on the periphery of the plasma flame in the direction which allows the refrigerant to contact with the beam of the melt droplets.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: August 23, 1994
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Tsutomu Itoh, Shinji Fukami, Masayuki Kitoh
  • Patent number: 5243169
    Abstract: A plasma gas is injected from a vortex flow forming hole defined to an insulator in a tangential direction with respect to the circumference of the arc column of a torch to enable the axis of the arc column to be aligned with the axial of the torch and a vortex annular gas sheath is coaxially formed to thereby narrow down a plasma flame. Further, the torch comprises the above insulator and a casing which are connected in series each other.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: September 7, 1993
    Assignee: Onoda Cement Co., Ltd.
    Inventors: Haruo Tateno, Akira Bunya, Susumu Matsuno, Akira Nakamura, Hiroshi Saitoh, Tsutomu Itoh, Hideo Nagasaka
  • Patent number: 5155335
    Abstract: An oven for baking a powdered coating material to an object has an inlet air-shield chamber connected to the inlet side of a horizontal heating chamber. The inlet air-shield chamber is provided therein with a radiation heat source which heats the object and the layer of coating powder to a temperature substantially equal to the baking temperature before the object enters the horizontal heating chamber.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: October 13, 1992
    Assignees: Shoei Manufacturing Co., Ltd., Onoda Cement Co. Ltd.
    Inventors: Kiyota Habaki, Iyuki Watanabe, Tsutomu Itoh, Masakatsu Deguchi, Katsuya Itoh
  • Patent number: 5070274
    Abstract: An arc is formed between a pair of discharge electrodes, a plasma gas separated from a raw material gas flowing substantially in parallel to the arc to form a plasma flame, the raw material gas flowing to the upstream within the plasma flame, and a diamond being deposited on the substrate downstream within the flame.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: December 3, 1991
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Masanori Yoshikawa, Haruo Tateno, Hiroshi Obana, Tsutomu Itoh, Hiroshi Saitoh, Masayuki Kitoh
  • Patent number: 4975836
    Abstract: A virtual machine system has a processor operating as a base machine which includes a plurality of groups of registers, such as data registers, address registers and instruction address registers which are selected according to identification data identifying individual virtual machines. A respective group of registers is allotted to each virtual machine and to the virtual machine monitor in the system. A status register file is provided to effect selective access to a respective one of a plurality of status registers in the system in accordance with a virtual machine number. An interrupt processing portion is provided comparing the value of an interrupt mask level of the status word of a corresponding virtual machine with an externally generated interrupt level to control interrupt processing.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: December 4, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Hirosawa, Junichi Kurihara, Shigemi Okumura, Tetsuzou Uehara, Tsutomu Itoh
  • Patent number: 4917917
    Abstract: An electrostatic powder coating method and apparatus therefor, in which an auxiliary electrode is disposed in the vicinity of a desired coating surface of an object to be coated, a gun for performing electrostatic powder coating is directed to the object to be coated and the auxiliary electrode, a DC electric field is formed between the gun, the auxiliary electrode and the object to be coated, the auxiliary electrode is electrically charged to the same polarity as the gun so as to form an auxiliary electric field between the auxiliary electrode and the desired coating surface of the object to be coated whereby a powder coating material is transferred to be applied onto the desired coating surface by the electric field.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: April 17, 1990
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Masahiro Yamamoto, Mituyosi Kumata, Katutoshi Kozoe, Tsutomu Itoh
  • Patent number: 4898116
    Abstract: A powder coating booth a function of supplying air though its ceiling. Sidewalls of the booth is formed from an insulating material or a semiconductor. A belt conveyor is disposed at the bottom of the booth. An electric field is formed so that it extends from a paint gun to the conveyor belt. The majority of oversprayed powder paint produced during painting becomes attached to the upper surface of a portion of the conveyor belt, is carried, together with this belt portion, to the outside of the booth, and is recovered from the conveyor by a blowing-type of static eliminator, thereby minimizing the mount of oversprayed powder paint mixed in an exhaust of the booth drawn through the sidewall.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: February 6, 1990
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Katsutoshi Kozoe, Nobuo Furuya, Shinichi Kimura, Yasunari Okamoto, Mitsuyoshi Kumada, Tatsuo Sugimoto, Takehiko Ueno, Kenjiro Shimizu, Tsutomu Itoh
  • Patent number: 4811689
    Abstract: An electrostatical powder coating method and apparatus therefor, in which an auxiliary electrode is disposed in the vicinity of a desired coating surface of an object to be coated, a gun for performing electrostatically powder coating is directed to the object to be coated and the auxiliary electrode, a DC electric field is formed between the gun, the auxiliary electrode and the object to be coated, the auxiliary electrode is electrically charged to the same polarity as the gun so as to form an auxiliary electric field between the auxiliary electrode and the desired coating surface of the object to be coated whereby a powder coating material is transferred to be applied onto the desired coating surface by the electric field.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: March 14, 1989
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Masahiro Yamamoto, Mituyosi Kumata, Katutoshi Kozoe, Tsutomu Itoh
  • Patent number: 4805069
    Abstract: A powder charging apparatus, in which a plasma electrode pair is disposed within an insulative tubular passage for transporting powder as carried by gas, a device for intermittently applying a D.C. voltage between that pair of plasma electrode is provided to form a space where mainly desired polarity ions drawn from the plasma electrode pair exist and another space where mainly opposite polarity ions exist, well dispersed powder is fed to the former space where mainly the desired polarity ions exist, and thereby stable and strong charging performances can be assured for a long term without adhesion and accumulation of the powder to and on either one of the pair of plasma electrodes; and an electrostatic powder painting apparatus containing this powder charging apparatus therein and having excellent penetrating performance and painting efficiency.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: February 14, 1989
    Assignee: Onada Cement Co., Ltd.
    Inventors: Hideo Nagasaka, Masahiro Yamamoto, Tadao Morita, Hiroshi Saitoh, Tsutomu Itoh
  • Patent number: 4747731
    Abstract: In an automatic powder feeding apparatus of the type that the apparatus comprises a sensor nozzle for blowing a carrier fluid into an inlet of a detector tubular passageway having an inlet and an outlet, apparatus for detecting a pressure difference between an inlet side pressure detecting port provided upstream of the outlet of the sensor nozzle and an outlet side pressure detecting port provided at the outlet of the detector tubular passageway, apparatus for shunting a part of the carrier fluid to the inlet side pressure detecting port and regulating a pressure at the outlet of the detector tubular passageway, the apparatus for regulating a pressure at the outlet of the detector tubular passageway being an injector connected via a valve to the outlet, and an automatic control valve having the pressure difference applied as its input and a flow rate of a driving fluid of the injector issued as its control output and including apparatus for presetting a set value corresponding to the pressure difference, in o
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: May 31, 1988
    Assignees: Hideo Nagasaka, Onoda Cement Co., Ltd.
    Inventors: Hideo Nagasaka, Tsutomu Itoh, Tadao Morita, Masahiro Yamamoto
  • Patent number: 4743940
    Abstract: A thermal fixing roller for use in a copying machine and a method for manufacturing the thermal fixing roller are disclosed. An insulator layer is formed on an outer surface of a cylindrical metallic pipe, a masking wire material is wound in a spiral manner on the surface of the insulator layer and a heat-generating resistor is formed by spray coating heat-generating resistor material on the insulator and wire surfaces. Thereafter the wire material is removed to leave a groove at its trace, and thereby the above-mentioned heat-generating resistor can be formed in a spiral shape. By choosing pitches at the opposite end portions of this spiral resistor smaller than that at the central portion thereof, uniform temperature is maintained over the entire length of the thermal fixing roller. Also by forming a cross-section configuration of the masking wire material in a rectangular shape, it is allowed to reduce the width of the above-mentioned groove to minimum.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: May 10, 1988
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Hideo Nagasaka, Tsutomu Itoh, Manabu Shimoizumi, Hiroshi Saitoh, Kenzo Yanagida, Kazunori Fujita, Masayuki Kitoh
  • Patent number: 4741286
    Abstract: A single torch-type plasma spray coating method wherein a gas flow in a nozzle of a plasma torch is made to be a laminer flow, thereby the plasma flame jetted from the end of the plasma torch is modified to be a laminer flow flame, the plasma is separated from the plasma flame which contains liquid droplets of molten spray coating material and runs toward an object to be worked by means for separating plasma arranged immediately before said object to be worked, and remaining droplets of molten spray coating material impinges on said object to form a coating film thereon, and an apparatus therefor.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: May 3, 1988
    Assignee: Onoda Cement Company, Ltd.
    Inventors: Tsutomu Itoh, Haruo Tateno, Hideo Nagasaka, Masahiro Yamamoto, Yusuke Mitsuyoshi, Susumu Matsuno, Hiroshi Saitoh, Masayuki Kitoh
  • Patent number: 4670290
    Abstract: A multiple torch type plasma spray coating method and a multiple torch type plasma spray coating apparatus in which a main torch and an auxiliary torch are disposed so that their center axes may intersect each other, is improved in that laminar flow plasma is generated by the main torch, spray coating material is charged into the plasma flame in the proximity of the outlet of the main plasma torch, the plasma flame is blown onto an object to be treated, plasma is separated from the plasma flame just in front of the object to be treated, and the then left spray coating material is made to deposit onto the object to be treated.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: June 2, 1987
    Assignees: Rikagaku Kenkyusho, Onoda Cement Company, Ltd.
    Inventors: Tsutomu Itoh, Haruo Tateno, Hideo Nagasaka, Masahiro Yamamoto, Yusuke Mitsuyoshi, Susumu Matsuno, Hiroshi Saitoh, Masayuki Kitoh
  • Patent number: 4377603
    Abstract: A workpiece which may be made of a highly electrically insulating material is held in a spaced opposing relationship with respect to a silent discharge plate electrode to which an a.c. voltage is applied. A d.c. voltage is applied across the workpiece and the silent discharge plate electrode to form a driving electric field therebetween. Powder particles suspended in air are charged in the same polarity as that of the silent discharge plate electrode and then injected into the region between the silent discharge plate electrode and the workpiece where the electric field drives the charged particles toward the workpiece to coat it. The a.c. voltage is sufficient to repel the electrode surface confronting the workpiece and to maintain the silent discharge at a reduced level and effectively precluding deposit of powder particles on the mentioned surface. An apparatus for the electrostatic coating is also disclosed.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: March 22, 1983
    Assignee: Onoda Cement Company, Limited
    Inventors: Tsutomu Itoh, Nobuo Furuya, Kenji Ouchi, Takeo Shimizu, Hiroshi Saitoh