Patents by Inventor Naoki Wakita

Naoki Wakita 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: 10236684
    Abstract: An ESD protection circuit has a diode that includes an anode connected to a first power-supply line and a cathode connected to a second power-supply line. A metal-oxide-semiconductor (MOS) transistor is connected in series with the diode. A trigger circuit is configured to output a trigger signal to a gate of the MOS transistor in synchronization with a surge on the first power-supply line. A first resistor and a first capacitor are connected in series between the first power-supply line and the second power-supply line. A well region, in which the source and the drain of the MOS transistor are disposed, is connected to a connection point between the first resistor and the first capacitor. A potential of the connection point varies so that a forward voltage is applied to a p-n junction between the well region and the source of the MOS transistor to correspond with the surge.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 19, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Naoki Wakita
  • Publication number: 20180115154
    Abstract: An ESD protection circuit has a diode that includes an anode connected to a first power-supply line and a cathode connected to a second power-supply line. A metal-oxide-semiconductor (MOS) transistor is connected in series with the diode. A trigger circuit is configured to output a trigger signal to a gate of the MOS transistor in synchronization with a surge on the first power-supply line. A first resistor and a first capacitor are connected in series between the first power-supply line and the second power-supply line. A well region, in which the source and the drain of the MOS transistor are disposed, is connected to a connection point between the first resistor and the first capacitor. A potential of the connection point varies so that a forward voltage is applied to a p-n junction between the well region and the source of the MOS transistor to correspond with the surge.
    Type: Application
    Filed: March 1, 2017
    Publication date: April 26, 2018
    Inventor: Naoki WAKITA
  • Patent number: 9920285
    Abstract: A thermoplastic resin composition for cleaning a molding processing machine, which has good cleaning performance and workability in cleaning an inner side of a molding processing machine of thermoplastic resin composition, such as an extruder and an injection molding and includes (A) an olefin-based resin, (B) a thermoplastic resin which is not compatible with the olefin-based resin of the component (A), (C) a thermoplastic resin for making the olefin-based resin of the component (A) and the thermoplastic resin of the component (B) compatible with each other, (D) an alkaline metal salt of a fatty acid, (E) a nonionic surfactant, and (F) a metal salt of an acidic phosphoric ester.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: March 20, 2018
    Assignee: DAICEL POLYMER LTD.
    Inventor: Naoki Wakita
  • Patent number: 9144924
    Abstract: To provide a thermoplastic resin composition for cleaning a molding processing machine, which has good cleaning performance and workability in cleaning an inner side of a molding processing machine of thermoplastic resin, such as an extruder and an injection molding machine. A thermoplastic resin composition for cleaning a molding processing machine, which includes (A) a thermoplastic resin containing a styrene-based resin, (B) an alkaline metal salt of a fatty acid, (C) a nonionic surfactant, and (D) a metal salt of an acidic phosphoric ester.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: September 29, 2015
    Assignee: DAICEL POLYMER LTD.
    Inventor: Naoki Wakita
  • Publication number: 20150062764
    Abstract: The ESD protection circuit includes a detection controlling circuit that is connected between the power supply line and the grounding line, detects a current flowing through the power supply line and outputs a controlling signal responsive to a result of the detection. The ESD protection circuit includes a protecting nMOS transistor connected to the power supply line at a drain thereof and receives the controlling signal at a gate thereof. The ESD protection circuit includes one stage of PN-junction diode connected to a source of the protecting nMOS transistor at an anode thereof and to the grounding line at a cathode thereof.
    Type: Application
    Filed: March 4, 2014
    Publication date: March 5, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoki WAKITA, Mitsuhiro YANO, Ryuji NISHIMOTO, Katsuhiko MURATA
  • Publication number: 20150021802
    Abstract: To provide a thermoplastic resin composition for cleaning a molding processing machine, which has good cleaning performance and workability in cleaning an inner side of a molding processing machine of thermoplastic resin composition, such as an extruder and an injection molding machine. A thermoplastic resin composition for cleaning a molding processing machine, which includes (A) an olefin-based resin, (B) a thermoplastic resin which is not compatible with the olefin-based resin of the component (A), (C) a thermoplastic resin for making the olefin-based resin of the component (A) and the thermoplastic resin of the component (B) compatible with each other, (D) an alkaline metal salt of a fatty acid, (E) a nonionic surfactant, and (F) a metal salt of an acidic phosphoric ester.
    Type: Application
    Filed: January 15, 2013
    Publication date: January 22, 2015
    Inventor: Naoki Wakita
  • Publication number: 20140371125
    Abstract: To provide a thermoplastic resin composition for cleaning a molding processing machine, which has good cleaning performance and workability in cleaning an inner side of a molding processing machine of thermoplastic resin, such as an extruder and an injection molding machine. A thermoplastic resin composition for cleaning a molding processing machine, which includes (A) a thermoplastic resin containing a styrene-based resin, (B) an alkaline metal salt of a fatty acid, (C) a nonionic surfactant, and (D) a metal salt of an acidic phosphoric ester.
    Type: Application
    Filed: January 15, 2013
    Publication date: December 18, 2014
    Inventor: Naoki Wakita
  • Patent number: 8558390
    Abstract: According to one embodiment, provided is a semiconductor device including a lower layer wiring, and an upper layer wiring that is drawn in the same direction as a direction in which the lower layer wiring is drawn. Intermediate wirings include at least a first intermediate wiring and a second intermediate wiring. Conductors include at least a plurality of first conductors connecting between the lower layer wiring and the first intermediate wiring, a plurality of second conductors connecting between the upper layer wiring and the second intermediate wiring, and a plurality of third conductors which connect between the first intermediate wiring and the second intermediate wiring, and are less in number than the first conductors or the second conductors on a drawn side of the lower layer wiring and the upper layer wiring.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: October 15, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naoki Wakita, Shigeyuki Hayakawa
  • Publication number: 20130140687
    Abstract: According to one embodiment, provided is a semiconductor device including a lower layer wiring, and an upper layer wiring that is drawn in the same direction as a direction in which the lower layer wiring is drawn. Intermediate wirings include at least a first intermediate wiring and a second intermediate wiring. Conductors include at least a plurality of first conductors connecting between the lower layer wiring and the first intermediate wiring, a plurality of second conductors connecting between the upper layer wiring and the second intermediate wiring, and a plurality of third conductors which connect between the first intermediate wiring and the second intermediate wiring, and are less in number than the first conductors or the second conductors on a drawn side of the lower layer wiring and the upper layer wiring.
    Type: Application
    Filed: August 28, 2012
    Publication date: June 6, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoki WAKITA, Shigeyuki HAYAKAWA
  • Patent number: 8447582
    Abstract: A circuit simulation apparatus according to an embodiment of the present invention calculates a set value of a SPICE parameter of a MOSFET to carry out a variation analysis on a semiconductor circuit including the MOSFET.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: May 21, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumie Fujii, Sadayuki Yoshitomi, Naoki Wakita, Yuka Itano
  • Publication number: 20120142835
    Abstract: The present invention provides a thermoplastic resin composition for cleaning, containing: (A) 100 parts by mass of polypropylene resin, (B) 0 to 50 parts by mass of a thermoplastic resin which is not compatible with the polypropylene resin of the component (A), (C) 0.5 to 50 parts by mass of a thermoplastic resin for making the polypropylene resin of the component (A) compatible with the thermoplastic resin of the component (B), and (D) 0.5 to 15 parts by mass of a surfactant.
    Type: Application
    Filed: August 25, 2010
    Publication date: June 7, 2012
    Inventor: Naoki Wakita
  • Patent number: 8156461
    Abstract: In one embodiment, a SPICE corner model generating method for generating a SPICE corner model of an MOSFET includes preparing a table of a ratio X regarding a combination of two kinds of MOSFETs selected from N kinds of MOSFETs, the ratio X being a magnitude of a variation of an MOSFET in a case where directions of variations of the two kinds of MOSFETs are opposite directions to a magnitude of a variation of an MOSFET in a case where the directions of the variations of the two kinds of MOSFETs are the same direction, where N is an integer of 2 or greater. The method further includes reading out, when a combination of two kinds of MOSFETs is designated among the N kinds of MOSFETs, a value of the ratio X corresponding the designated combination from the table of the ratio X.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naoki Wakita, Sadayuki Yoshitomi, Fumie Fujii, Yuka Itano
  • Publication number: 20120000489
    Abstract: The present invention presents a resin composition for cleaning a plastics-processing machine, containing a tracer substance and a thermoplastic resins, wherewith the plastics-processing machine is cleaned. After the plastics-processing machine finishing with processing of a resin is cleaned with the resin composition, the resin composition remaining in the processing machine is discharged with a subsequent resin. The residue of the said resin composition is checked by detecting fluorescence on the surface of a molding after the molding containing the subsequent resin is obtained in the discharging process of the said resin composition remaining in the processing machine.
    Type: Application
    Filed: December 25, 2009
    Publication date: January 5, 2012
    Inventor: Naoki Wakita
  • Publication number: 20110301932
    Abstract: In one embodiment, a MOSFET model output apparatus is configured to output a MOSFET model for a simulation of a semiconductor circuit. The apparatus includes a shape data input part configured to input shape data of a MOSFET. The apparatus further includes a parameter calculation part configured to calculate a parameter of a parasitic device model to be added to the MOSFET model, using the shape data. The apparatus further includes a MOSFET model output part configured to generate and output the MOSFET model added with the parasitic device model, using the parameter of the parasitic device model. Further, the MOSFET model output part adds different parasitic device models to the MOSFET model in a case where the MOSFET is an N-type MOSFET and in a case where the MOSFET is a P-type MOSFET.
    Type: Application
    Filed: March 4, 2011
    Publication date: December 8, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sadayuki YOSHITOMI, Naoki WAKITA, Yuka ITANO, Fumie FUJII
  • Patent number: 8029910
    Abstract: The present invention is directed to a composite comprising a resin element comprising a resin composition and a vulcanized rubber element formed by vulcanizing an unvulcanized rubber, wherein the resin composition comprises a resin, a vulcanization-activating agent for improving adhesiveness of the resin to a rubber, and a stabilizer, and the resin composition and the vulcanized rubber are directly joined together.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: October 4, 2011
    Assignee: Daicel-Evonik Ltd.
    Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
  • Publication number: 20110238393
    Abstract: In one embodiment, a SPICE model parameter output apparatus is configured to output a SPICE model parameter of a high-frequency or analog MOSFET for a simulation of a semiconductor circuit. The apparatus includes a data input part to input shape data of the MOSFET and measurement data on frequency characteristics of the MOSFET. The apparatus further includes a substrate resistance calculating part configured to calculate a substrate resistance of a one-terminal substrate resistance model regarding the MOSFET, based on the measurement data. The apparatus further includes a SPICE model parameter output part configured to calculate the SPICE model parameter, based on the substrate resistance of the one-terminal substrate resistance model and the shape data, to output the calculated SPICE model parameter.
    Type: Application
    Filed: September 21, 2010
    Publication date: September 29, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sadayuki YOSHITOMI, Naoki Wakita, Fumie Fujii, Yuka ITANO
  • Patent number: 7989540
    Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: August 2, 2011
    Assignee: Daicel-Evonik Ltd.
    Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
  • Publication number: 20110131541
    Abstract: In one embodiment, a SPICE corner model generating method for generating a SPICE corner model of an MOSFET includes preparing a table of a ratio X regarding a combination of two kinds of MOSFETs selected from N kinds of MOSFETs, the ratio X being a magnitude of a variation of an MOSFET in a case where directions of variations of the two kinds of MOSFETs are opposite directions to a magnitude of a variation of an MOSFET in a case where the directions of the variations of the two kinds of MOSFETs are the same direction, where N is an integer of 2 or greater. The method further includes reading out, when a combination of two kinds of MOSFETs is designated among the N kinds of MOSFETs, a value of the ratio X corresponding the designated combination from the table of the ratio X.
    Type: Application
    Filed: September 13, 2010
    Publication date: June 2, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoki WAKITA, Sadayuki YOSHITOMI, Fumie FUJII, Yuka ITANO
  • Publication number: 20110077917
    Abstract: A circuit simulation apparatus according to an embodiment of the present invention calculates a set value of a SPICE parameter of a MOSFET to carry out a variation analysis on a semiconductor circuit including the MOSFET.
    Type: Application
    Filed: March 23, 2010
    Publication date: March 31, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Fumie Fujii, Sadayuki Yoshitomi, Naoki Wakita, Yuka Itano
  • Publication number: 20100215964
    Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
    Type: Application
    Filed: May 4, 2010
    Publication date: August 26, 2010
    Inventors: Toru IKUTA, Hajime KOMADA, Mitsuteru MUTSUDA, Hiroaki ARITA, Naoki WAKITA