Patents by Inventor Ichiro Naito

Ichiro Naito 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: 6866724
    Abstract: A bar or wire product for use in cold forging, characterized in that it comprises a steel having the chemical composition, in mass %: C: 0.1 to 0.6%, Si: 0.01 to 0.5%, Mn: 0.2 to 1.7%, S: 0.001 to 0.15%, Al: 0.015 to 0.05%, N: 0.003 to 0.025%, P: 0.035% or less, O: 0.003% or less and balance: Fe and inevitable impurities, and it has, in the region from the surface thereof to the depth of the radius thereofĂ—0.15, a structure wherein ferrite accounts for 10 area % or less and the balance is substantially one or more of martensite, bainite and pearlite, and the average hardness in the region from the depth of the radius thereofĂ—0.5 to the center thereof is less than that of the surface layer thereof by 20 or more of HV; and a method for producing the bar or wire product.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: March 15, 2005
    Assignee: Nippon Steel Corporation
    Inventors: Tatsuro Ochi, Hideo Kanisawa, Ken-ichiro Naito
  • Patent number: 6858101
    Abstract: The present invention is a steel, excellent in machinability, wherein forging workability is improved by suppressing the deterioration of mechanical properties in the direction in which the mechanical properties are the lowest, and more specifically, is a steel excellent in forgeability and machinability, characterized in that: the steel contains, in mass, C: 0.1 to 0.85%, Si: 0.01 to 1.5%, Mn: 0.05 to 2.0%, P: 0.003 to 0.2%, S: 0.003 to 0.5%, and Zr: 0.0003 to 0.01%; the following steel components are controlled in the following ranges respectively, in mass, Al: 0.01% or less, total O: 0.02% or less, and total N: 0.02% or less; the average aspect ratio of MnS grains is 10 or less and the maximum aspect ratio of those is 30 or less; and the balance of the steel components consists of Fe and unavoidable impurities.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: February 22, 2005
    Assignee: Nippon Steel Corporation
    Inventors: Masayuki Hashimura, Hiroshi Hirata, Kohichi Isobe, Ken-ichiro Naito, Kenji Fukuyasu
  • Patent number: 6602359
    Abstract: The present invention provides a steel bar or wire rod for cold forging excellent in ductility after spheroidizing annealing and capable of preventing the occurrence of cracking in the steel material during cold forging, which cracking has so far been a problem when manufacturing machine structural components by cold forging, and a method to produce the same. Specifically, a steel bar or wire rod for cold forging according to the present invention has a chemical composition comprising, in mass, 0.1 to 0.65% of C, 0.01 to 0.5% of Si, 0.2 to 1.7% of Mn, 0.001 to 0.15% of S, 0.015 to 0.1% of Al, 0.0005 to 0.007% of B, and the restricted elements of 0.035% or less of P, 0.01% or less of N and 0.003% or less of O, with the balance consisting of Fe and unavoidable impurities, and is characterized in that: the area percentage of ferrite structure is 10% or less at the portion from the surface to the depth of 0.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: August 5, 2003
    Assignee: Nippon Steel Corporation
    Inventors: Tatsuro Ochi, Hideo Kanisawa, Ken-ichiro Naito
  • Publication number: 20030075250
    Abstract: A bar or wire product for use in cold forging, characterized in that it comprises a steel having the chemical composition, in mass %: C: 0.1 to 0.6%, Si: 0.01 to 0.5%, Mn: 0.2 to 1.7%, S: 0.001 to 0.15%, Al: 0.015 to 0.05%, N: 0.003 to 0.025%, P: 0.035% or less, O: 0.003% or less and balance: Fe and inevitable impurities, and it has, in the region from the surface thereof to the depth of the radius thereof×0.15, a structure wherein ferrite accounts for 10 area % or less and the balance is substantially one or more of martensite, bainite and pearlite, and the average hardness in the region from the depth of the radius thereof×0.5 to the center thereof is less than that of the surface layer thereof by 20 or more of HV; and a method for producing the bar or wire product.
    Type: Application
    Filed: June 21, 2002
    Publication date: April 24, 2003
    Inventors: Tatsuro Ochi, Hideo Kanisawa, Ken-ichiro Naito
  • Patent number: 6309443
    Abstract: The present invention provides a simplified ladle refining process capable of efficiently heating a molten steel in a short period of time while scattering and adhesion of splashes and erosion of refractories are suppressed. A simplified ladle refining process for refining a molten steel in a ladle comprising inserting an immersion snorkel into a ladle and blowing an oxidizing gas onto the surface of a molten steel within the immersion snorkel through a lance while the molten steel is being stirred by blowing an inert gas through the bottom of the ladle, wherein the lance has a ratio (d0/dt) of a nozzle outlet diameter d0 (mm) to a nozzle throat diameter dt (mm) of from 1.2&agr; to 2.5&agr; wherein &agr; is defined as a function of a back pressure.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: October 30, 2001
    Assignee: Nippon Steel Corporation
    Inventors: Shinya Kitamura, Ken-ichiro Naito, Hikofumi Taniishi
  • Patent number: 5830285
    Abstract: A fine graphite uniform dispersion steel material excellent in cold workability, cuttability and hardenability, which has graphite finely and uniformly dispersed therein, and a production method for producing the same. The steel contains at least 0.30 to 1.0% of C, 0.4 to 1.3% of Si, 0.3 to 1.0% of Mn, 0.0003 to 0.006% of B, 0.002 to 0.010% of N and 0.05 to 0.20% of Mo as the basic components and contains graphite having a mean particle diameter of not more than 4.0 .mu.m and a number of particles per unit and of at least 3,000 per mm.sup.2. The production method includes at least the steps of cooling the steel having these components at a cooling start temperature of not less than an A.sub.rl point, a cooling end temperature of not more than an M.sub.s point and a mean cooling rate of 5.degree. to 100.degree. C./s.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: November 3, 1998
    Assignee: Nippon Steel Corporation
    Inventors: Sakae Katayama, Toshimi Tarui, Masahiro Toda, Ken-ichiro Naito
  • Patent number: 5649180
    Abstract: The present invention is a method for extracting and generating hierarchical specification information in which the derivative of data included in already-developed software is hierarchically related and the reusability of data which is stored together with a relating procedure is high. In the method of the present invention, an existing program is analyzed and a data item and a procedure are extracted, and a procedure relating to a data item is stored in relation to the data item, and data items sharing a used area, data items for transferring data, or comparison items are stored as similar items in relation to each other, and key items are selected from the similar items, and a hierarchical specification in which the selected key items are set is generated, and dependent data items are selected from a record having the data items related to the key items, and the selected data items are added as attribute data of the hierarchical specification.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: July 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Hirofumi Danno, Ichiro Naito, Gunji Tsukuda
  • Patent number: 5590270
    Abstract: A reverse engineering method for supporting software reuse in generating an upper level software product from a lower level software product allowing the reuse of some software product's among multi-level software products ranging from an upper level data flow to a lower level job flow. The method includes the steps of: generating an upper level software product using a lower level software product; generating relational information between the lower and upper level software products; inputting a request for changing the upper level software product via an input/output interface; changing the upper level software product in response to the change request; and detecting a reusable field of the lower level software product which is not to be changed, in response to a change of the upper level software product.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: December 31, 1996
    Assignees: Hitachi, Ltd., Hitachi System Engineering, Ltd., Hitachi Software Engineering Co. Ltd.
    Inventors: Gunji Tsukuda, Ichiro Naito, Hirofumi Danno, Kazutoshi Tamura, Hiroshi Tsukino, Hideo Kamiko, Hirokazu Mimura, Akiko Fukuya, Hiroyuki Maezawa
  • Patent number: 5459866
    Abstract: In a support system for software development implemented on a computer, a file input/output distinction related to a utility whose program can not be analyzed is preliminarily registered in the support system, job control language which is the subject of automatic production of a job flow specification is input, the job control language and a source program are analyzed and basic job flow information is produced. A job flow specification is automatically produced by deriving a file input/output distinction from a load module name in the input job control language and one of source program analysis information corresponding thereto, utility information and job control language analysis information.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: October 17, 1995
    Assignees: Hitachi, Ltd., Hitachi System Engineering, Ltd.
    Inventors: Shinichi Akiba, Ichiro Naito, Hiroshi Tsukino
  • Patent number: 5305450
    Abstract: In a system for data processing by use of a processing language controlled by a job control program for coupling a file having at least one data item to a data set, a method of standardizing data items in an existing program stored in a storage and having a procedure part and a data definition part is disclosed. The names of two data items including the source and destination items of moving in the transfer designated in a plurality of data transfer instructions in an existing program are stored in the storage, and the equivalence number attached to the name of the transfer source item of each of the plurality of data transfer instructions is attached to the name of the transfer destination item. If a plurality of files assigned in the data definition part are defined in a single data set, the file equivalence number is attached to the plurality of files in the storage.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: April 19, 1994
    Assignees: Hitachi Ltd., Hitachi Microcomputer System Ltd.
    Inventors: Ichiro Naito, Hirofumi Danno, Kenichi Ohta
  • Patent number: 5248259
    Abstract: An electric connector for use with an automotive slide door is shown, which comprises a first connector part adapted to be mounted to a vehicle body and a second connector part adapted to be mounted to the door. The first connector part includes a first nonconducting casing, a first conducting contact pin axially movably received in the first casing, a conducting piece axially movably received in the first casing in front of the first contact pin, and a spring for biasing the conducting piece in a direction away from the first contact pin. The second connector part includes a second nonconducting casing and a second conducting contact pin carried by the second casing. When the door is manually moved in a closing direction to a slightly open given position, an exposed end of the second contact pin contacts and pushes the conducting piece toward the first contact pin against the force of the biasing means and finally brings the conducting piece into contact with the first contact pin.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: September 28, 1993
    Assignee: Ohi Seisakusho Co., Ltd.
    Inventors: Ichiro Naito, Jun Yamagishi
  • Patent number: 5191646
    Abstract: A display method in an information processing device for use in software development support includes the steps of analyzing a software product before change and a software product after change. Respectively forming structure information before change and structure information after change, which consist of software element informations correlated with each other, in accordance with the respective structures of the software products. Forming structure information that forms a union set of the before-change structure information and said after change structure information, which includes all the software element informations before and after change, and appending identification information representative of the manner of change in each software element to the union set structure information. Converting at least a part of the union set structure information into its graphic format so as to be produced together with the representations of the change manners represented by the identification information.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: March 2, 1993
    Assignees: Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd., Hitachi Seibu Soft Ware Co., Ltd.
    Inventors: Ichiro Naito, Hiroyuki Maezawa, Junko Yamaguchi, Hidetosi Katumata, Takeshi Oshio
  • Patent number: 5133063
    Abstract: A program change effect indicating method for use in a computer system designed to support the determination of parts to be changed in a program. Change steps associated with the method include; the steps of generating analyzed program information by analyzing a program, the analyzed program information representing attributes of respective statements in the program which constitute the program as well as connections between the statements; generating, in accordance with predetermined program intention determining rules, program intention information representing the intentions of the respective statements in the program from the analyzed program information.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: July 21, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Ichiro Naito, Hiroyuki Maezawa
  • Patent number: 4967348
    Abstract: A data name standardizing/unifying system for standardizing the names of data belonging to data items having different names and transferred or compared among data files so as to be unified for programs. For standardizing the data names, names of data items assumed to have same contents are gathered and a table indicating data names to be replaced are generated to be displayed together with prompting for entry of the standard data name to replace. From this table, standardization for data names is accomplished by this replacement of the data name in the programs. For identifying the standardized data names created for the different files, different file names or different and upper file names are added to a division of program which refers to the files.
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: October 30, 1990
    Assignees: Hitachi, Ltd., Hitachi Microcomputer Engineering
    Inventors: Ichiro Naito, Takahiko Kobayashi, Hiroyuki Maezawa
  • Patent number: 4422816
    Abstract: A shiftable article storage device having a plurality of shiftable article storage units each adapted for mounting articles to be stored thereon and provided with a driving source, the article storage units being put together with no interval between each other when not in use but shifted, when an article on one of them is desired to be taken out, in such a manner that an aisle is formed on one side of the one article storage unit to provide access to the article.
    Type: Grant
    Filed: March 16, 1971
    Date of Patent: December 27, 1983
    Assignee: Elecompack Company Ltd.
    Inventors: Han-Ichiro Naito, Tsuneo Yamaguchi, Kiyoshi Harashima
  • Patent number: 4412772
    Abstract: A shiftable article storage device having a plurality of shiftable article storage units each adapted for mounting articles to be stored thereon and provided with a driving source. The article storage units are put together with no interval between each other when not in use but shifted, when an article on one of them is desired to be taken out, in such a manner that an aisle is formed on one side of one article storage unit to provide access to the article.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: November 1, 1983
    Assignee: Elecompack Company, Ltd.
    Inventors: Han-Ichiro Naito, Tsuneo Yamaguchi, Kiyoshi Harashima
  • Patent number: 4104837
    Abstract: A wall of a building is constructed by joining a plurality of partition units of substantially U-like cross-sectional shape. During storage or transportation, the partition units are grouped into a telescoped assembly by forcing each partition unit into the internal space of another. During construction of the wall, the partition units are successively drawn to be joined together while being engaged at the upper or lower end thereof by a guide member thereby providing continuous flat partition wall surfaces. Then, a filler material is usually filled in the internal space of the joined partition units to complete the wall, but such filling work can be dispensed with where ready installing and disassembling is desired or where insulation against heat and or sound is not required.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: August 8, 1978
    Inventor: Han-Ichiro Naito
  • Patent number: 4072179
    Abstract: A structure comprising a plurality of partition members in sheet form each providing a pair of spaced opposite partition faces connected at one side and non-connected at the other side. These partition members are grouped into a telescoped assembly by guiding each of them into the internal space of another when not in use. When in use, the partition members are successively drawn from the telescoped assembly to provide continuous partition faces of a partition between two compartments of a room, sliding door or a window shutter.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: February 7, 1978
    Inventor: Han-Ichiro Naito
  • Patent number: 4000821
    Abstract: An apparatus for storing and delivering articles, having storage means divided longitudinally into a plurality of storage compartments each for storing a plurality of articles therein, and article delivery means provided at a delivery opening for each storage compartment for delivering one or a plurality of articles from said delivery opening, said article or articles delivered from each of said delivery openings being conveyed to a desired location by conveyor means.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: January 4, 1977
    Assignee: Elecompack Company Ltd.
    Inventors: Han-Ichiro Naito, Tsuneo Yamaguchi, Kiyoshi Harashima