Patents by Inventor Nobuyuki Nakamura

Nobuyuki Nakamura 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: 7903657
    Abstract: In a method for classifying the types of applications on an IP network, packets are received, and statistical information on at least TCP flags and TCP packet sizes of the received packets are gathered to store. On the basis of the statistical information on the stored TCP flags, the applications are classified into two types, while, on the basis of the statistical information on the stored TCP packet sizes, the applications are classified into two other types. Further on the basis of results of the classification; the applications are classified into four types.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: March 8, 2011
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Nobuyuki Nakamura
  • Publication number: 20110048588
    Abstract: A cold-rolled steel sheet has a partially recrystallized grain structure with a degree of unrecrystallization of 25% to 90% and a Rockwell hardness HRB of 83 or more, the cold-rolled steel sheet containing 0.01% to 0.15% C, 0.03% or less Si, 0.10% to 0.70% Mn, 0.025% or less P, 0.025% or less S, 0.01% to 0.05% Al, and 0.008% or less N on a mass basis, the remainder being Fe and unavoidable impurities, wherein the mean diameter of ferrite is 2 to 10 ?m and these components satisfy Formula (1): (C %)+0.15×(Mn %)+0.85×(P %)?0.21, wherein (M %) represents the content (mass percent) of an element M.
    Type: Application
    Filed: February 26, 2009
    Publication date: March 3, 2011
    Applicant: JFE Steel Corporation
    Inventors: Tetsuya Mega, Nobuyuki Nakamura, Takashi Kobayashi, Yasunobu Nagataki, Takayoshi Kabeya
  • Patent number: 7879163
    Abstract: A method for manufacturing a high carbon hot-rolled steel sheet. The method including the steps of hot-rolling, primary cooling, secondary cooling, coiling, acid-washing and annealing. The primary cooling step is to cool the hot-rolled steel sheet down to a cooling termination temperature of 450° C. to 600° C. at a cooling rate of higher than 120° C./sec. The secondary cooling step is to apply a secondary cooling to hold the primarily cooled hot-rolled steel sheet at a temperature of 450° C. to 650° C. until coiling.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: February 1, 2011
    Assignee: JFE Steel Corporation
    Inventors: Nobuyuki Nakamura, Takeshi Fujita, Yoshiro Tsuchiya, Shunji Ilzuka, Saiji Matsuoka
  • Publication number: 20110018066
    Abstract: A semiconductor device includes an antifuse element. The semiconductor device includes a first well of a first conductivity type disposed in a semiconductor substrate; a first insulating film on the first well; a first conductive film of the first conductivity type on the first insulating film; and an impurity-introduced region of the first conductivity type. The impurity-introduced region of the first conductivity type in the first well is higher in impurity concentration than the first well. The impurity-introduced region includes a first portion that faces toward the first conductive film through the first insulating film.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 27, 2011
    Applicant: Elpida Memory, Inc.
    Inventors: Shinichi Horiba, Nobuyuki Nakamura, Eiji Kitamura
  • Patent number: 7877479
    Abstract: A bandwidth control system controls the bandwidths used by plural web crawlers. The bandwidth control system receives a connection request from one of the web crawlers for establishing a connection between that web crawler and a content server. The control system records each of the web crawlers in association with a content server to which that web crawler is connected. The control system monitors the traffic on the content servers to which the web crawlers are connected. When the traffic on the content server recorded becomes too heavy, the control system disconnects the web crawler from the content server to which the crawler is connected.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: January 25, 2011
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Satoshi Ikada, Yoshitaka Hamaguchi, Nobuyuki Nakamura
  • Publication number: 20110014677
    Abstract: A DNA fragment containing a gene which encodes a specific gene regulatory region alone or the gene regulatory region together with a signal peptide; a recombinant vector containing the DNA fragment; a transformant containing the recombinant vector; and a method of producing a recombinant protein by using the transformant. According to the invention, it is possible to produce a protein in a large amount at a high efficiency regardless of the kind of the recombinant protein.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 20, 2011
    Inventors: Yuji Hatada, Yukari Ohta, Yuko Hidaka, Nobuyuki Nakamura
  • Publication number: 20110008832
    Abstract: A method for preparing a protein or peptide encoded by a foreign gene by expressing a foreign gene, which comprises the steps of: preparing a recombinant vector comprising in an expressible state a gene encoding an aminoacyl-tRNA synthetase, in which a desired foreign gene has been inserted in an expressible state; preparing a mutant host cell or the like in which a chromosomal gene encoding an aminoacyl-tRNA synthetase has been knocked out; transforming the mutant host cell with the recombinant vector to obtain a transformant; and culturing the transformant to prepare the protein or peptide encoded by the foreign gene. It becomes possible to provide a novel means for permitting the retention of a recombinant DNA cloning vector without employing an antibiotic and without limiting the composition of the medium; and a method for preparing a protein or peptide encoded by a foreign gene by using the means.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 13, 2011
    Inventors: Yuji Hatada, Yukari Ohta, Yuko Hidaka, Nobuyuki Nakamura
  • Publication number: 20100282376
    Abstract: An ultra soft high carbon hot-rolled steel sheet has excellent workability. The steel sheet is a high carbon hot-rolled steel sheet containing 0.2 to 0.7% C, and has a structure in which mean grain size of ferrite is 20 ?m or larger, the volume percentage of ferrite grains having 10 ?m or smaller size is 20% or less, mean diameter of carbide is in a range from 0.10 ?m to smaller than 2.0 ?m, the percentage of carbide grains having 5 or more of aspect ratio is 15% or less, and the contact ratio of carbide is 20% or less.
    Type: Application
    Filed: February 26, 2007
    Publication date: November 11, 2010
    Applicant: JFE STEEL CORPORATION, A CORPORATION OF JAPAN
    Inventors: Hideyuki Kimura, Takeshi Fujita, Nobuyuki Nakamura, Naoya Aoki, Masato Sasaki, Satoshi Ueoka, Shunji Iizuka
  • Publication number: 20100223455
    Abstract: An encrypted-traffic discrimination device includes an input interface, a flow discrimination section, a data accumulation section, a selective data calculation section, a calculation result determination section, and an output interface. The flow discrimination section discriminates the input traffic into separate flows based on at least a transmission origin address and a transmission destination address. The data accumulation section accumulates characteristic amount data of the traffic for each of the separate flows. The selective data calculation section executes an evaluation computation utilizing specific data from the characteristic amount data. The calculation result determination section that, based on a calculated evaluation computation value, executes threshold value determination to determine whether or not the traffic is encrypted, and, if the traffic is determined to be encrypted, which encryption format the traffic is encrypted with.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicants: OSAKA CITY UNIVERSITY, OSAKA UNIVERSITY, OKI ELECTRIC INDUSTRY CO., LTD.
    Inventors: Shingo Ata, Go Hasegawa, Yoshihiro Nakahira, Nobuyuki Nakamura
  • Publication number: 20100206439
    Abstract: A high strength hot rolled thick steel sheet has a tensile strength of 440 to 640 MPa, preferably 490 to 590 MPa, and an elongation of 20% or more; is excellent in uniformity in a sheet thickness direction and in strength and toughness after heat treatment; and is suitably used for structural components of automobiles, construction machines, and the like, and a method for manufacturing the hot rolled thick steel sheet. A steel material having a composition including C: 0.10 to 0.20%, Ti: 0.01 to 0.15%, B: 0.0010 to 0.0050%, and proper amounts of Si, Mn, Al, P, S, and N is hot-rolled at a finisher delivery temperature of 820 to 880° C. in finish rolling, is cooled at a cooling rate of 15 to 50° C./s until a temperature reaches a cooling stop temperature of 500 to 600° C., and is coiled.
    Type: Application
    Filed: June 6, 2008
    Publication date: August 19, 2010
    Applicant: JFE STEEL CORPORATION
    Inventors: Kazuhiro Seto, Nobuyuki Nakamura, Akio Kobayashi
  • Publication number: 20100196189
    Abstract: A high-strength steel sheet has high stretch flangeability after working and corrosion resistance after painting. The steel sheet contains, on the basis of mass percent, C: 0.02% to 0.20%, Si: 0.3% or less, Mn: 0.5% to 2.5%, P: 0.06% or less, S: 0.01% or less, Al: 0.1% or less, Ti: 0.05% to 0.25%, and V: 0.05% to 0.25%, the remainder being Fe and incidental impurities. The steel sheet has a substantially ferritic single phase, the ferritic single phase containing precipitates having a size of less than 20 nm, the precipitates containing 200 to 1750 mass ppm Ti and 150 to 1750 mass ppm V, V dissolved in solid solution being 200 or more but less than 1750 mass ppm.
    Type: Application
    Filed: July 31, 2008
    Publication date: August 5, 2010
    Applicant: JFE STEEL CORPORATION
    Inventors: Koichi Nakagawa, Takeshi Yokota, Nobuyuki Nakamura, Kazuhiro Seto, Satoshi Kinoshiro, Katsumi Yamada
  • Publication number: 20100195520
    Abstract: An apparatus for detecting deterioration in quality of a telecommunications network includes a packet monitor for monitoring a packet flowing through the network, a quality information extractor for extracting the quality index of the network on the basis of the packet monitored, a quality deterioration detector for detecting deterioration in quality of the network on the basis of the quality index. The quality deterioration detector determines, for the packet monitored and coming only from a wired line, that the quality of the network is deteriorated if the quality index decreases, and determines, for the packet monitored and coming from a wireless line, that the quality of the network is deteriorated if the quality index aperiodically decreases.
    Type: Application
    Filed: January 26, 2010
    Publication date: August 5, 2010
    Applicant: OKI ELECTRIC INDUSTRY CO., LTD.
    Inventor: Nobuyuki Nakamura
  • Patent number: 7664032
    Abstract: Each node or terminal in a communication network is capable of generating routing information for routing packets from an arbitrary source terminal to an arbitrary destination terminal on both a single-path route and a multipath route. The routing information is placed in packets transmitted to neighboring communication terminals, and analyzed in packets received from neighboring terminals. The single-path route is spatially or temporally separated from the multipath route so that the single-path route does not receive interference from the multipath route. Temporal separation may be effected by suspending the transmission of packets temporarily at each communication terminal on the multipath route. Spatial separation may be effected by using the routing information to designate different zones in the network, the single-path route being disposed in one zone, the multipath route in another zone.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 16, 2010
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Nobuyuki Nakamura, Youiti Kado
  • Publication number: 20090308504
    Abstract: A steel sheet excellent in FB performance and also excellent in fabrication performance after FB working and a manufacturing method of the same are provided. The steel sheet is a steel sheet having a composition containing from 0.1 to 0.5% of C, not more than 0.5% of Si and from 0.2 to 1.5% of Mn in terms of % by mass, with P and S being adjusted at proper ranges and having a structure having a ferrite having an average grain size of more than 10 ?m and less than 20 ?m and a cementite present in the ferrite grain having an average particle size of from 0.3 to 1.5 ?m. In this way, the steel sheet becomes a steel sheet excellent in FB performance, mold life and performance (side bend elongation) after FB working.
    Type: Application
    Filed: January 29, 2007
    Publication date: December 17, 2009
    Applicant: JFT Steel corporation, a corporation of Japan
    Inventors: Nobusuke Kariya, Takeshi Yokota, Nobuyuki Nakamura, Kazuhiro Seto
  • Publication number: 20090260729
    Abstract: A high-carbon hot-rolled steel sheet with excellent width-direction homogeneity is provided. The steel sheet contains 0.2% to 0.7% carbon, 0.01% to 1.0% silicon, 0.1% to 1.0% manganese, 0.03% or less phosphorus, 0.035% or less sulfur, 0.08% or less aluminum, and 0.01% or less nitrogen, and the balance is iron and incidental impurities. The structure is such that the average ferrite grain size of edge parts of the steel sheet is less than 35 ?m, the average ferrite grain size of a part closer to the center of the steel sheet than the edge parts is less than 20 ?m, and the average carbide grain size is 0.10 ?m or more and less than 2.0 ?m. The steel sheet is produced by roughly rolling the steel, finish-rolling the steel at a finishing temperature of more than (Ar3+40° C.), cooling the steel at a cooling rate of more than 120° C./s within two seconds after the finish rolling to a cooling termination temperature of more than 550° C. and less than 650° C., coiling the steel at a temperature of 550° C.
    Type: Application
    Filed: August 6, 2007
    Publication date: October 22, 2009
    Inventors: Shunji Iizuka, Kazuhiro Seto, Akio Kobayashi, Kenichi MItsuzuka, Naoya Aoki, Hideyuki Kimura, Nobuyuki Nakamura
  • Publication number: 20090245247
    Abstract: Routing schemes are provided for a communication network. In one scheme, destination terminals and associated neighboring terminals are listed in a routing control cache at each communication terminal in the network, and packets are routed toward the destination terminal through the associated neighboring terminals. In another scheme, a single path from a source terminal to a destination terminal is automatically expanded into multiple paths. In yet another scheme, packets are routed as long as this does not increase the number of hops to the destination terminal. These schemes enable multiple paths to be established by a simple procedure not requiring complex distance calculations. In still another scheme, routing is restricted to the shortest path and paths up to a given number of hops longer than the shortest path, permitting paths to diverge in multiple directions from the source and destination terminals.
    Type: Application
    Filed: May 26, 2009
    Publication date: October 1, 2009
    Applicant: Oki Electric Industry Co., Ltd
    Inventors: Nobuyuki Nakamura, Youiti Kado
  • Patent number: 7594014
    Abstract: An abnormality management apparatus, connected via a network to a plurality of probes disposed at arbitrary positions in the network, comprises an abnormality level reception unit that receives information indicating an abnormality level calculated at each of the plurality of probes, an abnormality analysis unit that judges the scale of an abnormality manifesting in the network based upon an average value of the abnormality levels indicated at the plurality of probes and deviations relative to the average value and a result output unit that outputs results obtained at the abnormality analysis unit. The structure enables accurate assessment of the scale of an abnormality having occurred in the network and quick response to the abnormality by detecting its cause at an early stage.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: September 22, 2009
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Nobuyuki Nakamura
  • Publication number: 20090224324
    Abstract: A semiconductor device includes a semiconductor substrate, and an electric fuse element, the electric fuse element including: first impurity-diffused layer regions formed in an active region of the semiconductor substrate; an insulating film formed on the semiconductor substrate between the first impurity-diffused layer regions; and a gate electrode formed on the insulating film, the insulating film including thermal oxide silicon films arranged immediately below both ends of the gate electrode in a gate-length direction thereof, and a high-k film arranged between the thermal oxide silicon films.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Applicant: ELPIDA MEMORY, INC.
    Inventor: NOBUYUKI NAKAMURA
  • Publication number: 20090205756
    Abstract: Provided is a hot-rolled thin steel sheet having a thickness of less than 6 mm and having high strength showing a tensile strength of 440 MPa or more, excellent formability, and excellent strength and toughness after heat treatment and a method of manufacturing the same. A steel base material containing 0.10 to 0.20% of C, and Si, Mn, Al, P, S, and N adjusted to suitable amount ranges, and 0.01 to 0. 15% of Ti and 0.0005 to 0.0050% of B is hot rolled so as to have a finishing temperature of finish rolling of 820 to 880° C.; after the completion of the rolling, the hot-rolled thin steel sheet is cooled to a surface temperature range of 550 to 650° C. at a surface cooling rate of 15 to 50° C./s; and the hot-rolled thin steel sheet is coiled at the temperature range.
    Type: Application
    Filed: July 6, 2007
    Publication date: August 20, 2009
    Inventors: Nobuyuki Nakamura, Kazuhiro Seto
  • Publication number: 20090189248
    Abstract: A semiconductor device comprises an active region formed in a semiconductor substrate and a gate electrode formed on the active region via a gate insulating film formed on a surface of the active region. A peripheral portion of the gate electrode and a peripheral portion of the active region overlap each other at a position where the active region is not divided by the gate electrode when viewed in plan view, thus forming an overlap region.
    Type: Application
    Filed: January 30, 2009
    Publication date: July 30, 2009
    Applicant: ELPIDA MEMORY, INC.
    Inventors: Eiji KITAMURA, Shinichi HORIBA, Nobuyuki NAKAMURA