Patents by Inventor Takashige Terakawa

Takashige Terakawa 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: 9171661
    Abstract: A noise reducer is provided that ameliorates electromagnetic noise interference. More specifically, the noise reducer ameliorates electromagnetic noise interference for electronic equipment caused by noise superimposed on a conductor wire. The conductor wire includes a magnetic cylindrical core that penetrates a hollow hole, a winding coiled around the magnetic cylindrical core, and an impedance element connected to the winding. When a noise current is superimposed on the conductor wire that has been made to penetrate the magnetic cylindrical core, part of the noise current is electromagnetically induced from the conductor wire to the winding and flows to the winding. The noise current that flows to the winding is transformed into heat and consumed by the impedance element. As a result, the noise power that gives electromagnetic noise interference to the electronic devices can be reduced and the electromagnetic noise interference for the electronic devices ameliorated.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: October 27, 2015
    Inventor: Takashige Terakawa
  • Publication number: 20130069741
    Abstract: Disclosed is a noise reducer that ameliorates electromagnetic noise interference. Specifically disclosed is a noise reducer that ameliorates electromagnetic noise interference for electronic equipment caused by noise superimposed on a conductor wire. The conductor wire includes a magnetic cylindrical core that penetrates a hollow hole, a winding coiled around the magnetic cylindrical core, and an impedance element connected to the winding. When a noise current is superimposed on the conductor wire that has been made to penetrate the magnetic cylindrical core, part of the noise current is electromagnetically induced from the conductor wire to the winding and flows to the winding. The noise current that flows to the winding is transformed into heat and consumed by the impedance element. As a result, the noise power that gives electromagnetic noise interference to the electronic devices can be reduced and the electromagnetic noise interference for the electronic devices ameliorated.
    Type: Application
    Filed: April 26, 2011
    Publication date: March 21, 2013
    Inventor: Takashige Terakawa
  • Patent number: 8242859
    Abstract: To power-consume noise currents flown in power source lines, etc. in non-uniform wiring modes to such a level that noise obstructions can be suppressed by using a resistance without a capacitor that causes series resonance phenomena. It is a line noise attenuator for purifying electromagnetic environments by attenuating noise currents superimposed on a conductor line which supplies a signal power to a load from a signal power source. The conductor line operates as an antenna which receives high frequency noise currents. The conductor line has an inductor which tolerates flows of a low frequency signal power, and a resistance for changing the high frequency noise currents to heat and consuming the heat with a resistance value which is so set, with respect to a resistance value of the inductor replaced with a pure resistance value, that the high frequency noise current blocked at the inductor can be flown.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 14, 2012
    Assignee: Groundnite Inc.
    Inventors: Takashige Terakawa, Hideyuki Yamanaka
  • Publication number: 20110285482
    Abstract: To power-consume noise currents flown in power source lines, etc. in non-uniform wiring modes to such a level that noise obstructions can be suppressed by using a resistance without a capacitor that causes series resonance phenomena. It is a line noise attenuator for purifying electromagnetic environments by attenuating noise currents superimposed on a conductor line which supplies a signal power to a load from a signal power source. The conductor line operates as an antenna which receives high frequency noise currents. The conductor line has an inductor which tolerates flows of a low frequency signal power, and a resistance for changing the high frequency noise currents to heat and consuming the heat with a resistance value which is so set, with respect to a resistance value of the inductor replaced with a pure resistance value, that the high frequency noise current blocked at the inductor can be flown.
    Type: Application
    Filed: May 24, 2010
    Publication date: November 24, 2011
    Applicant: GROUNDNITE INC.,
    Inventors: Takashige TERAKAWA, Hideyuki YAMANAKA
  • Patent number: 7015774
    Abstract: A noise filter of the present invention includes an inductor and a resistor connected in parallel with each other. A power supply frequency current does not pass the resistor but passes through the inductor with no loss. On the other hand, a high frequency noise current including a resonance frequency current, does not pass the inductor but is dissipated at the resistor. Therefore, the noise filter does not charge noise power and so does not suffer from a problem due to power discharging. The resonance frequency current caused by the noise filter and the earth capacitance is also dissipated at the resistor. Therefore, no problem is caused by the resonance frequency current.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: March 21, 2006
    Assignee: EMC Inc.
    Inventors: Takashige Terakawa, Hideyuki Yamanaka
  • Publication number: 20040263284
    Abstract: A noise filter of the present invention includes an inductor and a resistor connected in parallel with each other. A power supply frequency current does not pass the resistor but passes through the inductor with no loss. On the other hand, a high frequency noise current including a resonance frequency current, does not pass the inductor but is dissipated at the resistor. Therefore, the noise filter does not charge noise power and so does not suffer from a problem due to power discharging. The resonance frequency current caused by the noise filter and the earth capacitance is also dissipated at the resistor. Therefore, no problem is caused by the resonance frequency current.
    Type: Application
    Filed: December 10, 2003
    Publication date: December 30, 2004
    Applicant: EMC Inc.
    Inventors: Takashige Terakawa, Hideyuki Yamanaka
  • Patent number: 6801103
    Abstract: A noise filter 10 of the present invention includes an inductor 71 and a resistor 11 connected in parallel with each other. A power supply frequency current bypasses the resistor 11 but passes through the inductor 71. A high frequency noise current including a resonance frequency current, on the other hand, bypasses the inductor 71 but is dissipated at the resistor 11. Therefore, the noise filter 10 does not accumulate noise power and so does not suffer from a problem due to power releasing. The resonance frequency current caused by combination of inductance of the inductance and earth capacitance in the noise filter 10 is also dissipated at the resistor 11, thus giving rise to no problem of its own.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: October 5, 2004
    Assignee: EMC Inc.
    Inventors: Takashige Terakawa, Hideyuki Yamanaka
  • Publication number: 20030117814
    Abstract: A noise filter 10 of the present invention includes an inductor 71 and a resistor 11 connected in parallel with each other. A power supply frequency current bypasses the resistor 11 but passes through the inductor 71. A high frequency noise current including a resonance frequency current, on the other hand, bypasses the inductor 71 but is dissipated at the resistor 11. Therefore, the noise filter 10 does not accumulate noise power and so does not suffer from a problem due to power releasing. The resonance frequency current caused by combination of inductance of the inductance and earth capacitance in the noise filter 10 is also dissipated at the resistor 11, thus giving rise to no problem of its own.
    Type: Application
    Filed: July 18, 2002
    Publication date: June 26, 2003
    Applicant: EMC Inc.
    Inventors: Takashige Terakawa, Hideyuki Yamanaka
  • Patent number: 5231997
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. Electromagnetic waves output from a single electromagnetic wave generating means are branched into a plurality of branched electromagnetic waves, which are respectively employed to conduct hyperthermia treatments for a plurality of patients. The whole of the hyperthermia system is controlled in a concentrated fashion from a single section by means of time-division multiplexing. It is therefore possible for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, even when the conditions of these patients differ from one another. Further, it is advantageously possible to simplify the arrangement of the system as a whole and stabilize the control of the system.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: August 3, 1993
    Assignees: Tokyo Keiki Co., Ltd., Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 5148814
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. When it is necessary for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, the control of a plurality of electromagnetic wave outputs and the control of cooling of the surface of a heated region are effected by a centralized control which employs time-division multiplexing. Thus, it is advantageously possible to efficiently carry out a hyperthermia treatment which is fitting for the condition of each of a plurality of patients.
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: September 22, 1992
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 5053582
    Abstract: A magnetic wave shield tape comprises a strip-shaped conductive member and a strip-shaped insulative member, the strip-shaped magnetic member being fixed to and overlapping the strip-shaped insulative member in the width direction.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: October 1, 1991
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Takashige Terakawa, Wataru Kusakabe, Yoshihisa Hiraoka, Toshihisa Sugiyama
  • Patent number: 5033478
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. When it is necessary for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, the control of a plurality of electromagentic wave outputs and the control of cooling of the surface of a heated region are effected by a centralized control which employs time-division multiplexing. Thus, it is advantageously possible to efficiently carry out a hyperthermia treatment which is fitting for the condition of each of a plurality of patients.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: July 23, 1991
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 5025810
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. Electromagnetic waves output from a single electromagnetic wave generating means are branched into a plurality of branched electromagnetic waves, which are respectively employed to conduct hyperthermia treatments for a plurality of patients. The whole of the hyperthermia system is controlled in a concentrated fashion from a single section by means of time-division multiplexing. It is therefore possible for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, even when the conditions of these patients differ from one another. Further, it is advantageously possible to simplify the arrangement of the system as a whole and stabilize the control of the system.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: June 25, 1991
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 5008486
    Abstract: An improved electromagnetic wave shielding panel and wall structure includes a plate member of electrically nonconductive material and an electrically conductive foil applied to at least one surface thereof, with an electrically conductive net laid on the electrically conductive foil with its fringe portion extending beyond the edge of the plate member. The use of an electrically conductive net which extends beyond the edge of the plate member, facilitates electrical connection at the joint between adjacent panels and enhances electromagnetic shielding at both low and high impedance levels. Necessary electrical connections can be made simply by abutting the adjacent side surfaces of the panels against each other with their net fringe portions sandwiched therebetween.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: April 16, 1991
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Takashige Terakawa, Wataru Kusakabe
  • Patent number: 4901042
    Abstract: A high-frequency power divider having an input line, a pair of input-output lines, and a pair of high-impedance transmission lines diverging from the input line and interconnecting the first and second input-output lines. An isolation resistor is interposed between and connected to a pair of portions of the high-impedance transmission lines proximate the input-output lines. A capacitive component, corresponding to the capacitive component of the resistor, is provided at a diverging point at which the high-impedance transmission lines diverge from the first input-output line. The second capacitive component is defined by a capacitor or electrode surface.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: February 13, 1990
    Assignee: Tokyo Keiki Co.
    Inventors: Takashige Terakawa, Noriyuki Akaba, Sadayoshi Hattori
  • Patent number: 4891483
    Abstract: The applicator used in this invention functions as an antenna for delivering electromagnetic energy into a living body. The applicator is supported by a supporting mechanism through a supporting device. The applicator can move to and stop at a position through the action of this supporting mechanism. A cooling section is provided on the contact surfaces of the applicator and the living body so as to protect normal cells on the surface of living body. This cooling section is additionally provided with a coolant circulating device, which enables to continuously perform hyperthermia for a long period of time. The coolant circulating device has a pressure reducing mechanism to counter the fluctuations in fluidal pressure, and further, provided with a deaerating device for preventing the air from stagnating therein.
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: January 2, 1990
    Assignee: Tokyo Keiki Co. Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 4884580
    Abstract: This invention relates to a hyperthermia device for treating cancerous growth in a living body utilizing electromagnetic waves. It features an ability for maintaining the temperature of the heated region by effectively controlling the output of the electromagnetic waves and the temperature of the heated body surface accurately which was heretofore considered most difficult.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: December 5, 1989
    Assignee: Tokyo Keiki Co. Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 4873995
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. Electromagnetic waves output from a single electromagnetic wave generating means are branced into a plurality of branched electromagnetic waves, which are respectively employed to conduct hyperthermia treatments for a plurality of patients. The whole of the hyperthermia system is controlled in a concentrated fashion from a single section by means of time-division multiplexing. It is therefore possible for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, even when the conditions of these patients differ from one another. Further, it is advantageously possible to simplify the arrangement of the system as a whole and stabilize the control of the system.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 17, 1989
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa
  • Patent number: 4868520
    Abstract: A high-frequency power synthesizing apparatus having a plurality of distributors arranged in a plurality of stages, a plurality of amplifiers which are supplied with outputs from a final stage of said power distributors and which amplify these outputs to a predetermined level, and a power synthesizing unit including initial-stage power synthesizers supplied with outputs from said amplifiers and a final-stage synthesizer which outputs power to an external load. The final-stage power distributors and the initial stage synthesizers are constituted by 0.degree.-hybrid modules. The output level of each amplifier is regulated and made constant by being compared with a predetermined level. The output levels of the amplifiers can be displayed on an external display.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: September 19, 1989
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Takashige Terakawa, Noriyuki Akaba, Sadayoshi Hattori
  • Patent number: 4860770
    Abstract: A heating apparatus for hyperthermia utilizes electromagnetic waves for locally heating cancerous cells within a living body. When it is necessary for a plurality of patients to be subjected to hyperthermia treatment at the same time and in parallel with each other, the control of a plurality of electromagnetic wave outputs and the control of cooking of the surface of a heated region are effected by a centralized control which employs time-division multiplexing. Thus, it is advantageously possible to efficiently carry out a hyperthermia treatment which is fitting for the condition of each of a plurality of patients.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: August 29, 1989
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Makoto Kikuchi, Shinsaku Mori, Yoshio Nikawa, Takashige Terakawa