Patents by Inventor Katsuhiko Tomita

Katsuhiko Tomita 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: 20220212941
    Abstract: A method for producing a zeolite with improved Si/Al according to the present invention includes the steps of: subjecting a zeolite synthesized without using an organic structure directing agent to ion exchange, thereby obtaining a sodium-type, a proton-type, or an ammonium-type zeolite; and bringing the zeolite subjected to ion exchange into contact with an ammonium salt solution, thereby dealuminating the zeolite. It is preferable that the ammonium salt is any one of ammonium oxalate, ammonium fluoride, ammonium fluorosilicate, ammonium fluoroborate, ammonium fluorophosphate, ammonium fluorotitanate, and ammonium florozirconate. It is also preferable that the zeolite after ion exchange is exposed to water vapor, and is then brought into contact with the ammonium salt solution.
    Type: Application
    Filed: June 29, 2020
    Publication date: July 7, 2022
    Inventors: Yuichi SENOO, Katsuhiko HAYASHI, Junki TOMITA, Takahiro KOGAWA, Akihiro KANNO
  • Publication number: 20220203344
    Abstract: Provided is a beta zeolite satisfying P>76.79Q?29.514 in a range in which Q is less than 0.4011 nm, wherein, P represents an AB value that is an intensity ratio of A to B, A represents a diffraction intensity of a main peak of the beta zeolite observed by X-ray diffraction measurement, B represents a diffraction intensity of the (116) plane of ?-alumina obtained by X-ray diffraction measurement under the same conditions as those for the X-ray diffraction measurement on the beta zeolite, the ?-alumina being the standard substance 674a distributed by the American National Institute of Standards and Technology, and Q represents a lattice interplanar spacing of the main peak of the beta zeolite observed by X-ray diffraction measurement. It is preferable that the formula (1) above is satisfied in a range in which Q is from 0.3940 to 0.4000 nm.
    Type: Application
    Filed: June 29, 2020
    Publication date: June 30, 2022
    Inventors: Yuichi SENOO, Katsuhiko HAYASHI, Junki TOMITA, Takahiro KOGAWA, Akihiro KANNO
  • Patent number: 7280069
    Abstract: A radar apparatus includes a modulation signal generating unit that generates a modulation signal based on an internal clock with a cycle Tc and generates a trigger signal in synchronization with the modulation signal, a carrier wave generating unit that generates a carrier wave, a modulation unit that generates and outputs a high frequency signal by modulating the carrier wave using the modulation signal, a modulation signal extracting unit that extracts the modulation signal from a component of the high frequency signal that has been transmitted via a transmission antenna, the component having been reflected by a measured object and received by a reception antenna, a detection signal generating unit that generates a detection signal, for measuring a distance to the measured object, based on the trigger signal and the extracted modulation signal, and a pulse width calculating unit that calculates a pulse width of the detection signal.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: October 9, 2007
    Assignee: TDK Corporation
    Inventors: Tomohiro Honya, Katsuhiko Tomita, Hiroshi Ikeda
  • Patent number: 6989949
    Abstract: A method of testing a performance of the HGA has a step of writing information from the at least one thin-film magnetic head element onto a magnetic disk with driving the actuator for displacement by applying an alternating drive signal to the actuator, a step of reading out the information of at least one rotation of the magnetic disk by the at least one thin-film magnetic head element without driving the actuator for displacement, a step of storing the information read-out from the magnetic disk as a read-out information along a disk-rotating direction, a step of moving the HGA toward an off-track direction by a predetermined distance, a step of repeatedly executing the reading, storing and moving steps to obtain two-dimensional read-out information along the disk-rotating direction and the off-track direction, and a step of determining, from the two-dimensional read-out information, an off-track position where the read-out information becomes maximum at each position along the disk-rotating direction, the
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: January 24, 2006
    Assignees: SAE Magnetics (H.K.) Ltd., TDK Corporation
    Inventors: Tsz Lok Cheng, Tamon Kasajima, Masashi Shiraishi, Katsuhiko Tomita, Takashi Honda, Takeshi Wada
  • Publication number: 20050134498
    Abstract: A radar apparatus includes a modulation signal generating unit that generates a modulation signal based on an internal clock with a cycle Tc and generates a trigger signal in synchronization with the modulation signal, a carrier wave generating unit that generates a carrier wave, a modulation unit that generates and outputs a high frequency signal by modulating the carrier wave using the modulation signal, a modulation signal extracting unit that extracts the modulation signal from a component of the high frequency signal that has been transmitted via a transmission antenna, the component having been reflected by a measured object and received by a reception antenna, a detection signal generating unit that generates a detection signal, for measuring a distance to the measured object, based on the trigger signal and the extracted modulation signal, and a pulse width calculating unit that calculates a pulse width of the detection signal.
    Type: Application
    Filed: December 21, 2004
    Publication date: June 23, 2005
    Applicant: TDK Corporation
    Inventors: Tomohiro Honya, Katsuhiko Tomita, Hiroshi Ikeda
  • Patent number: 6824660
    Abstract: A molecular recognition layer 21 is formed on a sensor face 6a of a chemical CCD 1 having such a structure that a plurality of potential wells 6 constituted to change a depth corresponding to a chemical quantity are arranged two-dimensionally, electric charges are injected into the potential wells 6, and the chemical quantity is converted into an electric charge corresponding to the sizes of the potential wells. Thus, it is provided a novel and useful molecular recognition type chemical CCD capable of measuring an ultramicro chemical substance with an ultrahigh sensitivity at a molecular level.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: November 30, 2004
    Assignee: Horiba, Ltd.
    Inventor: Katsuhiko Tomita
  • Patent number: 6801377
    Abstract: A method of testing a performance of an HGA including a step of obtaining a displacement performance of a precise positioning actuator by driving this actuator to displace and by executing a track profile measurement of at least one thin-film magnetic head element.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 5, 2004
    Assignee: TDK Corporation
    Inventors: Tamon Kasajima, Katsuhiko Tomita, Masashi Shiraishi, Takashi Honda, Takeshi Wada
  • Publication number: 20030103284
    Abstract: A method of testing a performance of the HGA has a step of writing information from the at least one thin-film magnetic head element onto a magnetic disk with driving the actuator for displacement by applying an alternating drive signal to the actuator, a step of reading out the information of at least one rotation of the magnetic disk by the at least one thin-film magnetic head element without driving the actuator for displacement, a step of storing the information read-out from the magnetic disk as a read-out information along a disk-rotating direction, a step of moving the HGA toward an off-track direction by a predetermined distance, a step of repeatedly executing the reading, storing and moving steps to obtain two-dimensional read-out information along the disk-rotating direction and the off-track direction, and a step of determining, from the two-dimensional read-out information, an off-track position where the read-out information becomes maximum at each position along the disk-rotating direction, the
    Type: Application
    Filed: January 17, 2003
    Publication date: June 5, 2003
    Inventors: Tsz Lok Cheng, Tamon Kasajima, Masashi Shiraishi, Katsuhiko Tomita, Takashi Honda, Takeshi Wada
  • Patent number: 6479988
    Abstract: A method for testing a thin-film magnetic head with a MR read head element includes a step of applying a low-frequency or DC external magnetic field to the thin-film magnetic head from a stationary magnetic field generation unit, a step of executing a high-frequency amplification of an output from the MR read head element under the application of the external magnetic field to provide a high-frequency amplified signal, a step of deriving only a high-frequency component from the high-frequency amplified signal to provide a high-frequency component signal, and a step of judging whether the thin-film magnetic head occurs a noise or not by using the high-frequency component signal.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: November 12, 2002
    Assignee: TDK Corporation
    Inventors: Nozomu Hachisuka, Katsuhiko Tomita
  • Patent number: 6377976
    Abstract: A destination inconsistency judgment apparatus, a destination inconsistency judgment method, and a medium recorded with a destination inconsistency judgment program are provided, in which a destination-information designating an information-exchange-destination is compared with a transmitter-information included in a transmitted exchangee-information, and it is judged that an inconsistency has occurred in the destination-information when the destination-information and transmitter-information are inconsistent with each other. Further, a destination inconsistency correction apparatus, a destination inconsistency correction method, and a medium recorded with a destination inconsistency correction program are provided, in which the transmitter-information is added, as the destination-information, when it is judged that an inconsistency has occurred in the destination-information.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: April 23, 2002
    Assignee: Fujitsu Limited
    Inventors: Minoru Nitta, Takayo Oba, Katsuhiko Tomita, Toshimoto Katsuchi, Hiroyuki Murai
  • Publication number: 20020030912
    Abstract: A method of testing a performance of an HGA includes a step of obtaining a displacement performance of a precise positioning actuator by driving this actuator to displace and by executing a track profile measurement of at least one thin-film magnetic head element.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 14, 2002
    Inventors: Tamon Kasajima, Katsuhiko Tomita, Masashi Shiraishi, Takashi Honda, Takeshi Wada
  • Patent number: 6337864
    Abstract: An information transmission apparatus, an information transmission method, and a medium recorded with an information transmission program in a store-and-forward type of electronic conference system in which operational informations representing operations performed for various objects are stored in a queue and the stored operational informations are batch transmitted, wherein there are deleted the series of informations in the operational informations stored in the queue, which do not cause any resultant changes, so that the quantity of information exchange is reduced. The sequence of informations to be transmitted is also ensured, by skipping the destination for which a transmission error has occurred upon transmission of operational informations thereto.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: January 8, 2002
    Assignee: Fujitsu Limited
    Inventors: Minoru Nitta, Takayo Oba, Katsuhiko Tomita, Toshimoto Katsuchi, Hiroyuki Murai
  • Publication number: 20010048303
    Abstract: A method for testing a thin-film magnetic head with a MR read head element includes a step of applying a low-frequency or DC external magnetic field to the thin-film magnetic head from a stationary magnetic field generation unit, a step of executing a high-frequency amplification of an output from the MR read head element under the application of the external magnetic field to provide a high-frequency amplified signal, a step of deriving only a high-frequency component from the high-frequency amplified signal to provide a high-frequency component signal, and a step of judging whether the thin-film magnetic head occurs a noise or not by using the high-frequency component signal.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 6, 2001
    Inventors: Nozomu Hachisuka, Katsuhiko Tomita
  • Patent number: 6294133
    Abstract: A detector assembly for detecting a plurality of different properties at the same location at the same time is provided by integrating onto a single semiconductor substrate a first detector unit for measuring a first property and a second detector unit for measuring a second property. The first and second detector units can share, for example, a common element, such as a sensor device that can provide electrical output signals representative of, respectively, the first property and the second property. The common element can include a diaphragm with a pyroelectric element to provide a measurement of temperature and pressure.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: September 25, 2001
    Assignee: Horiba, Ltd.
    Inventors: Kazuaki Sawada, Katsuhiko Tomita, Tsuyoshi Nakanishi, Hiroki Tanabe, Susumu Mimura, Toshihiko Uno
  • Publication number: 20010017265
    Abstract: A molecular recognition layer 21 is formed on a sensor face 6a of a chemical CCD 1 having such a structure that a plurality of potential wells 6 constituted to change a depth corresponding to a chemical quantity are arranged two-dimensionally, electric charges are injected into the potential wells 6, and the chemical quantity is converted into an electric charge corresponding to the sizes of the potential wells. Thus, it is provided a novel and useful molecular recognition type chemical CCD capable of measuring an ultramicro chemical substance with an ultrahigh sensitivity at a molecular level.
    Type: Application
    Filed: December 29, 2000
    Publication date: August 30, 2001
    Inventor: Katsuhiko Tomita
  • Patent number: 6255678
    Abstract: Method and equipment easily visualize various physical phenomena or chemical phenomena by simultaneously taking in, accumulating, and transferring data at a plurality of points. Electric charge is injected in potential wells constructed to vary the depth in accord with the magnitude of the physical or chemical quantity, and the physical or chemical quantity is converted into electric charge according to the depth of the potential wells.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 3, 2001
    Assignee: Horiba, Ltd.
    Inventors: Kazuaki Sawada, Katsuhiko Tomita, Tsuyoshi Nakanishi, Hiroki Tanabe, Susumu Mimura
  • Patent number: 6229825
    Abstract: An information inconsistency judgment apparatus, an information inconsistency judgment method, and a medium recorded with an information inconsistency judgment program, for judging as to whether an inconsistency has occurred in a transmitted information, based on an object at a higher level of the object to be operated, and on the registered object. An information inconsistency correction apparatus, an information inconsistency correction method, and a medium recorded with an information inconsistency correction program, for correcting the registered object based on an operational information, when it is judged that an inconsistency has occurred in the transmitted information.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: May 8, 2001
    Assignee: Fujitsu Limited
    Inventors: Minoru Nitta, Takayo Oba, Katsuhiko Tomita, Toshimoto Katsuchi, Hiroyuki Murai
  • Patent number: 6154764
    Abstract: An electronic conference system in which a plurality of users post and read messages includes a message-deletion unit for deleting posted messages so that no access can be made to deleted messages. The electronic conference system further includes a deleted-message-information-management unit for storing identification information of the deleted messages.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 28, 2000
    Assignee: Fujitsu Limited
    Inventors: Minoru Nitta, Tetsuya Suehisa, Naoki Ishibashi, Katsuhiko Tomita
  • Patent number: 6131170
    Abstract: A registered information recovery processing apparatus and method in a store-and-forward type of electronic conference system, in which operation informations representing operations performed for various objects are stored is disclosed. Between information administrating devices which register and administrate the various objects, the stored operational informations are batch transmitted toward destination-information specified by information-exchange-destinations which is recorded in the information administering devices. Registered information recording devices record registered information which specifies the object registered in the information administrating devices. Recording controlling devices control recording of the registered information into the registered information recording devices.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: October 10, 2000
    Assignee: Fujitsu Limited
    Inventors: Morimasa Oishi, Minoru Nitta, Takayo Oba, Katsuhiko Tomita, Toshimoto Katsuchi, Hiroyuki Murai
  • Patent number: 6018760
    Abstract: An object move processing apparatus, an object move processing method, and a medium recorded with an object move processing program, in a store-and-forward type of electronic conference system, in which an object creation processing and an object deletion processing are independently performed when an object move operation has been performed between different hierarchy structures, to thereby obtain a result substantially same with an object-move processing, so that the object move processing can be correctly performed regardless of a move sequence of information transmission.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: January 25, 2000
    Assignee: Fujitsu Limited
    Inventors: Morimasa Oishi, Minoru Nitta, Katsuhiko Tomita, Takayo Oba, Toshimoto Katsuchi, Hiroyuki Murai