Patents by Inventor Mitsuo Kojima

Mitsuo Kojima 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).

  • Publication number: 20230353518
    Abstract: A file transfer system includes sender side terminal that generates an electronic mail to be transmitted to a destination address and a receiver side terminal that receives an electronic mail generated by the sender side terminal. A first server receives the electronic mail from the sender side terminal to identify the presence or absence of an attached file of the electronic mail. A second server performs a second transfer request of the attached file to the first server in response to a first transfer request of the attached file from the receiver side terminal. A third server receives the attached file provided from the first server in response to the second transfer request from the second server and transmits the attached file to the receiver side terminal in response to a reception request from the receiver side terminal.
    Type: Application
    Filed: December 21, 2021
    Publication date: November 2, 2023
    Inventors: Mitsuo Kojima, Mamoru Tomita, Akira Nakahashi, Hibiki Oka
  • Publication number: 20230237258
    Abstract: Aspects of this disclosure provide a device, system, and method for analyzing text. In an embodiment, a system is configured to convert characters of the text into a numerical time series signal. The numerical time series signal includes a time series conversion of the characters in numerical format. The system is further configured to generate a waveform with extracted information from the numerical time series signal. The extracted information having features based on politeness in language, a quantifiable use of punctuations, a quantifiable use of conjunctions, use of idioms, or a combination thereof. The system is additionally configured to determine whether the text is written by a specific user based on an analysis of the waveform against a threshold.
    Type: Application
    Filed: March 24, 2023
    Publication date: July 27, 2023
    Inventors: Hibiki Oka, Mitsuo Kojima, Akira Nakahashi
  • Patent number: 11657134
    Abstract: [Problem(s) to be solved] To provide an eye contact detection device that achieves man-machine interface based on eye contact. [Means for solving problem(s)] An eye contact detection device according to the present invention includes: a light emitting element 200 for emitting light from an opening 260 in an optical axis direction; a light receiving element 220 for receiving light emitted from the light emitting element 200 and reflected off by the eyeball E of user to output an electrical signal in accordance with the received light; a detection circuit 230 for amplifying and binarizing an analog electrical signal output from the light receiving element 220, and an eye contact determination unit 240 for determining the presence or absence of eye contact of user U based on a detection signal output from the detection circuit 230.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: May 23, 2023
    Assignee: IMatrix Holdings Corp.
    Inventors: Mitsuo Kojima, Hibiki Oka
  • Publication number: 20220342970
    Abstract: [Problem(s) to be solved] To provide an eye contact detection device that achieves man-machine interface based on eye contact. [Means for solving problem(s)] An eye contact detection device according to the present invention includes: a light emitting element 200 for emitting light from an opening 260 in an optical axis direction; a light receiving element 220 for receiving light emitted from the light emitting element 200 and reflected off by the eyeball E of user to output an electrical signal in accordance with the received light; a detection circuit 230 for amplifying and binarizing an analog electrical signal output from the light receiving element 220, and an eye contact determination unit 240 for determining the presence or absence of eye contact of user U based on a detection signal output from the detection circuit 230.
    Type: Application
    Filed: October 30, 2019
    Publication date: October 27, 2022
    Inventors: Mitsuo Kojima, Hibiki Oka
  • Publication number: 20220343067
    Abstract: [Problem(s)] To provide a text analysis system that is low cost and able to detect text with a normal expressive or structural features. [Solution] A text analysis system 100 according to the present invention includes a text acquisition portion 110 for acquiring text data; a feature extraction portion 120 for converting the text data acquired by the text acquisition portion 110 into a time series signal to extract a feature from the converted time series signal; a feature storage portion 130 for storing the feature extracted by feature extraction portion 120; and an anomalous text detection portion 140 for detecting anomalous text based on the feature in the feature storage portion 130.
    Type: Application
    Filed: September 2, 2019
    Publication date: October 27, 2022
    Inventors: Hibiki Oka, Mitsuo Kojima, Akira Nakahashi
  • Patent number: 11282040
    Abstract: An evaluating method can be performed by a computer. The method includes acquiring two-dimensional data represented by a plurality of character types, converting the two-dimensional data to three-dimensional data by classifying the acquired two-dimensional data into a dimension of the plurality of character types, analyzing a feature of the three-dimensional data, and evaluating input data described in the plurality of character types based on the analyzed feature.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 22, 2022
    Assignee: IMATRIX HOLDINGS CORP.
    Inventors: Mitsuo Kojima, Hibiki Oka
  • Publication number: 20190378091
    Abstract: An evaluating method can be performed by a computer. The method includes acquiring two-dimensional data represented by a plurality of character types, converting the two-dimensional data to three-dimensional data by classifying the acquired two-dimensional data into a dimension of the plurality of character types, analyzing a feature of the three-dimensional data, and evaluating input data described in the plurality of character types based on the analyzed feature.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 12, 2019
    Inventors: Mitsuo Kojima, Hibiki Oka
  • Patent number: 10163005
    Abstract: A mail processing apparatus includes a data retrieving section for retrieving sample data from e-mail and/or a network NW, a signalizing section for converting the sample data form the data retrieving section into n-value, a sample storage section for storing n-value data converted by the signalizing section, a signal processing section for comparing the n-value sample data stored in the sample storage section with an inputted e-mail to judge whether or not the e-mail is spam mail based on the degree of similarity, and a spam storing section for storing the spam mail based on the judgment result.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 25, 2018
    Assignee: IMatrix Corp.
    Inventors: Mitsuo Kojima, Atsushi Yokoyama, Tatsuo Suzuki, Shohei Numata
  • Publication number: 20180276459
    Abstract: A mail processing apparatus includes a data retrieving section for retrieving sample data from e-mail and/or a network NW, a signalizing section for converting the sample data form the data retrieving section into n-value, a sample storage section for storing n-value data converted by the signalizing section, a signal processing section for comparing the n-value sample data stored in the sample storage section with an inputted e-mail to judge whether or not the e-mail is spam mail based on the degree of similarity, and a spam storing section for storing the spam mail based on the judgment result.
    Type: Application
    Filed: June 1, 2018
    Publication date: September 27, 2018
    Inventors: Mitsuo Kojima, Atsushi Yokoyama, Tatsuo Suzuki, Shohei Numata
  • Patent number: 8878294
    Abstract: An inventive semiconductor device includes a semiconductor layer, a source region provided in a surface layer portion of the semiconductor layer, a drain region provided in the surface of the semiconductor layer in spaced relation from the source region, a gate insulation film provided in opposed relation to a portion of the surface of the semiconductor layer present between the source region and the drain region, a gate electrode provided on the gate insulation film, and a drain-gate isolation portion provided between the drain region and the gate insulation film for isolating the drain region and the gate insulation film from each other in non-contact relation.
    Type: Grant
    Filed: July 13, 2013
    Date of Patent: November 4, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Mitsuo Kojima, Shoji Takei
  • Publication number: 20130292765
    Abstract: An inventive semiconductor device includes a semiconductor layer, a source region provided in a surface layer portion of the semiconductor layer, a drain region provided in the surface of the semiconductor layer in spaced relation from the source region, a gate insulation film provided in opposed relation to a portion of the surface of the semiconductor layer present between the source region and the drain region, a gate electrode provided on the gate insulation film, and a drain-gate isolation portion provided between the drain region and the gate insulation film for isolating the drain region and the gate insulation film from each other in non-contact relation.
    Type: Application
    Filed: July 13, 2013
    Publication date: November 7, 2013
    Inventors: Mitsuo KOJIMA, Shoji TAKEI
  • Patent number: 8513766
    Abstract: An inventive semiconductor device includes a semiconductor layer, a source region provided in a surface layer portion of the semiconductor layer, a drain region provided in the surface of the semiconductor layer in spaced relation from the source region, a gate insulation film provided in opposed relation to a portion of the surface of the semiconductor layer present between the source region and the drain region, a gate electrode provided on the gate insulation film, and a drain-gate isolation portion provided between the drain region and the gate insulation film for isolating the drain region and the gate insulation film from each other in non-contact relation.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: August 20, 2013
    Assignee: Rohm Co., Ltd.
    Inventors: Mitsuo Kojima, Shoji Takei
  • Patent number: 8473556
    Abstract: An e-mail processing system includes an e-mail received from an external apparatus through a network and a managing center that manages the information regarding spam mails. An e-mail system detects a spam mail from the received e-mail based on the information received from the managing center, and user PCs that receive a legitimate e-mail other than spam mails, through the e-mail system.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: June 25, 2013
    Assignee: IMATRIX Corp.
    Inventors: Mitsuo Kojima, Eiji Ohta, Hiromichi Suematsu
  • Publication number: 20100161748
    Abstract: An e-mail processing system includes an e-mail received from an external apparatus through a network and a managing center that manages the information regarding spam mails. An e-mail system detects a spam mail from the received e-mail based on the information received from the managing center, and user PCs that receive a legitimate e-mail other than spam mails, through the e-mail system.
    Type: Application
    Filed: December 29, 2009
    Publication date: June 24, 2010
    Inventors: Mitsuo Kojima, Eiji Ohta, Hiromichi Suematsu
  • Publication number: 20100102387
    Abstract: An inventive semiconductor device includes a semiconductor layer, a source region provided in a surface layer portion of the semiconductor layer, a drain region provided in the surface of the semiconductor layer in spaced relation from the source region, a gate insulation film provided in opposed relation to a portion of the surface of the semiconductor layer present between the source region and the drain region, a gate electrode provided on the gate insulation film, and a drain-gate isolation portion provided between the drain region and the gate insulation film for isolating the drain region and the gate insulation film from each other in non-contact relation.
    Type: Application
    Filed: June 19, 2008
    Publication date: April 29, 2010
    Applicant: ROHM COL, LTD.
    Inventor: Mitsuo Kojima
  • Patent number: 5446298
    Abstract: The present invention provides a semiconductor device including nonvolatile memories and a manufacturing method thereof which have advantages in reliability of writing operation and in erasing time of erasing operation. This semiconductor device comprises a silicon substrate 40, a N type drain 40 formed in the surface of the substrate 36, a N type source 36, a tunnel oxide layer 14 located on the surface of the substrate, and a floating gate located on the tunnel oxide layer 14, having a first portion 55 in side of the source 36 and a second portion 54 in both sides of the drain 40 and the substrate 2, the second portion 54 being of a lower N type dosage than the first portion 55.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: August 29, 1995
    Assignee: Rohm Co., Ltd.
    Inventor: Mitsuo Kojima
  • Patent number: 5316963
    Abstract: A method for producing a semiconductor device, composed of manufacturing a semiconductor device having an arrayed read only memory arranged in an array with a production line used for manufacturing a semiconductor device having a flash memory which determines a state to be written in the read only memory with use of at least a semiconductor device having the flash memory.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: May 31, 1994
    Assignee: Rohm Co., Ltd.
    Inventor: Mitsuo Kojima
  • Patent number: 4950832
    Abstract: Dialkylnaphthalenes, especially 2,6-dialkylnaphthalene can be prepared with good yield for a long time by reacting naphthalene and/or monoalkylnaphthalenes with C.sub.2 -C.sub.4 olefin in the presence of silica-alumina catalyst containing 0.1-15 weight percent of fluorine under suitable conditions.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: August 21, 1990
    Assignee: Nikki Chemical Co., Ltd.
    Inventor: Mitsuo Kojima
  • Patent number: 4302357
    Abstract: An activated alumina catalyst containing alkali metal, sulfur, iron and silicon in an amount of 0.05 wt. % or less respectively, calculated as Na.sub.2 O, SO.sub.3, Fe.sub.2 O.sub.3 and SiO.sub.2 and having a purity of 99.6 wt. % or more exhibits superior activity and selectivity when used in the dehydration reaction of ethanol to ethylene. By adding to the above mentioned high purity activated alumina catalyst a phosphate of one member selected from the metals of Group IIa, Group IIb, Group IIIa and Group IVb of the Periodic Table in an amount of from 0.05 to 5 wt. % of said catalyst there can be obtained a catalyst having more improved activity and selectivity as well as more increased mechanical strength.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: November 24, 1981
    Assignee: Nikki Chemical Co., Ltd.
    Inventors: Mitsuo Kojima, Takahiro Aida, Yukio Asami
  • Patent number: 3989445
    Abstract: A pencil type gas lighter comprising a cylindrical casing consisting of a fore cylinder provided with a flame port at the front end and a rear cylinder separately joined with said fore cylinder. A gas container in said fore cylinder housing has an ignition nozzle with a gas valve disposed on the fore cylinder front end side of said gas container in communication with said gas container through said gas valve. A discharge electrode is positioned within the range of gas ejection from the ignition nozzle, and a feed valve is disposed on the fore cylinder rear end side of said gas container for supplying gas into said gas container. A high voltage generating means in said rear cylinder is electrically connected to said discharge electrode, said high voltage generating means having a valve opening member and a lever, the valve opening member being adapted for opening the gas valve in cooperation with the lever operable to generate a high voltage in said high voltage generating means.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: November 2, 1976
    Assignee: Kojima Precision Parts Co., Ltd.
    Inventor: Mitsuo Kojima