Patents by Inventor Lee Chahn

Lee Chahn 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: 7158893
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: January 2, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kiyomi Yoshinari, Kinya Kobayashi, Lee Chahn
  • Publication number: 20050139761
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Application
    Filed: November 22, 2004
    Publication date: June 30, 2005
    Inventors: Kiyomi Yoshinari, Kinya Kobayashi, Lee Chahn
  • Patent number: 6907352
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: June 14, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Kiyomi Yoshinari, Kinya Kobayashi, Lee Chahn
  • Patent number: 6796632
    Abstract: An orifice electrode/ink receiving member 11 is attached to an orifice plate 13 that is attached to a recording head module 10. An ink absorbing member 111 is embedded in a lower surface of the orifice electrode/ink receiving member 11. A recording ink droplet 14 ejected through an orifice 12 is deflected as needed by an angled electric field 85 and then impinges on a recording sheet 60 to form a recording dot 70. On the other hand, a refresh ink droplet 15 is deflected by the angled electric field 85 and impinges on the ink absorbing member 111 of the orifice electrode/ink receiving member 11 after flying in a U-turn path. In this configuration, the ink absorbing member 111 provided to the orifice electrode/ink receiving member 11 collects ink, so that there is no need to increase a gap between the recording head module 10 and the recording sheet 60 so much in order to dispose the ink absorbing member 111, preventing decrease in recording precision and paper jam.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: September 28, 2004
    Assignee: Hitachi Printing Solutions, Ltd.
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Kazuo Shimizu, Lee Chahn
  • Patent number: 6745134
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: June 1, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Kinya Kobayashi, Kiyomi Yoshinari, Lee Chahn
  • Publication number: 20030236636
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Application
    Filed: February 11, 2003
    Publication date: December 25, 2003
    Inventors: Kiyomi Yoshinari, Kinya Kobayashi, Lee Chahn
  • Publication number: 20030236634
    Abstract: A main object is to cope with an unknown structure substance thereby to identify the structure of a parent ion highly precisely and to derive a supposed structure. A method for analyzing mass spectrometric data is disclosed, which: acquires mass spectrometric data on an ionized sample and dissociated ions dissociated from the sample as a parent ion; derives dissociated ion candidates by analyzing the molecular orbits on the candidates of the structures of the parent ion; and displays the analytical results of the parent ion candidates and the dissociated ion candidates and compares the data of the dissociated ion candidates and the data of dissociated ions actually measured, to evaluate the structures of the parent ion candidates.
    Type: Application
    Filed: September 25, 2002
    Publication date: December 25, 2003
    Inventors: Kiyomi Yoshinari, Kinya Kobayashi, Lee Chahn
  • Patent number: 6635403
    Abstract: The invention relates to a lithographic apparatus for transferring a fine pattern having a line width less than 10 &mgr;m, a lithographic method, a structure for and a method of manufacturing an original master for transfer. The lithographic apparatus comprising an original master on which a pattern is formed within a two-dimensional plane, a slit for filling a medium in the pattern, a medium sump for feeding the medium, a pressure regulating mechanism for adjusting the pressure of the medium filled in the slit, and a lithographic substrate. With this apparatus, the pattern can be batch-transferred, thereby making it possible to easily manufacture electronic parts.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: October 21, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Akihiro Miyauchi, Lee Chahn, Mitsuru Hasegawa, Mitsuo Hayashibara, Hiroshi Sasaki
  • Publication number: 20030179264
    Abstract: An orifice electrode/ink receiving member 11 is attached to an orifice plate 13 that is attached to a recording head module 10. An ink absorbing member 111 is embedded in a lower surface of the orifice electrode/ink receiving member 11. A recording ink droplet 14 ejected through an orifice 12 is deflected as needed by an angled electric field 85 and then impinges on a recording sheet 60 to form a recording dot 70. On the other hand, a refresh ink droplet 15 is deflected by the angled electric field 85 and impinges on the ink absorbing member 111 of the orifice electrode/ink receiving member 11 after flying in a U-turn path. In this configuration, the ink absorbing member 111 provided to the orifice electrode/ink receiving member 11 collects ink, so that there is no need to increase a gap between the recording head module 10 and the recording sheet 60 so much in order to dispose the ink absorbing member 111, preventing decrease in recording precision and paper jam.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 25, 2003
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Kazuo Shimizu, Lee Chahn
  • Patent number: 6623112
    Abstract: As shown in FIG. 7(e), an electric field is generated at timing T3 at which an ink droplet 14 is divided, end moves the negative ions toward a main ink portion 14m. As shown in FIG. 7(e′), a resultant main ink droplet 14M has an increased charging amount of −3 q, and a satellite ink droplet 14S has a decreased charging amount of −6 q. When the main ink droplet 14M and the satellite ink droplet 14S have the mass of 1 m and Qs, respectively, then the relative charging amounts of the main ink droplet 14M and the satellite ink droplet 14S are both −3. Hence, the deflection amount of the satellite ink droplet 14S is approximately equal to the deflection amount of the main ink droplet 14M. Accordingly, the satellite ink droplet 14S and the rain ink droplet 14M impact the recording sheet 60 on the same spot or on the extremely close spots, thereby forming a single dot.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 23, 2003
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Lee Chahn
  • Patent number: 6561629
    Abstract: A back electrode 30 is provided at a rear surface side of a recording sheet 60. An orifice electrode 11 is attached to an orifice plate 15 of a head module 10. The orifice electrode 11, the orifice plate 15, and ink filling in a nozzle element 2 are electrically connected to the ground. The back electrode 30 has the potential corresponding to that of a charging/deflecting signal. With this configuration, the orifice electrode 11, a pressure chamber 13, and the back electrode 30 together generates an inclined electric field 85 at a position a close to a center trajectory 90. A charged ink droplet is deflected greatly by the inclined electric field 85, at an early stage of the ink flight, and even greater deflection can be achieved as the flight proceeds.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: May 13, 2003
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Kazuo Shimizu, Toshitaka Ogawa, Yoshikane Matsumoto, Lee Chahn
  • Publication number: 20030043239
    Abstract: As shown in FIG. 7(e), an electric field is generated at timing T3 at which an ink droplet 14 is divided, end moves the negative ions toward a main ink portion 14m As shown in FIG. 7(e′), a resultant main ink droplet 14M has an increased charging amount of −3 q, and a satellite ink droplet 14S has a decreased charging amount of −6 q.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 6, 2003
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Lee Chahn
  • Publication number: 20020130926
    Abstract: A back electrode 30 is provided at a rear surface side of a recording sheet 60. An orifice electrode 11 is attached to an orifice plate 15 of a head module 10. The orifice electrode 11, the orifice plate 15, and ink filling in a nozzle element 2 are electrically connected to the ground. The back electrode 30 has the potential corresponding to that of a charging/deflecting signal. With this configuration, the orifice electrode 11, a pressure chamber 13, and the back electrode 30 together generates an inclined electric field 85 at a position &agr; close to a center trajectory 90. A charged ink droplet is deflected greatly by the inclined electric field 85, at an early stage of the ink flight, and even greater deflection can be achieved as the flight proceeds.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 19, 2002
    Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Kazuo Shimizu, Toshitaka Ogawa, Yoshikane Matsumoto, Lee Chahn
  • Publication number: 20020101460
    Abstract: The invention relates to a lithographic apparatus for transferring a fine pattern having a line width less than 10 &mgr;m, a lithographic method, a structure for and a method of manufacturing an original master for transfer. The lithographic apparatus comprising an original master on which a pattern is formed within a two-dimensional plane, a slit for filling a medium in the pattern, a medium sump for feeding the medium, a pressure regulating mechanism for adjusting the pressure of the medium filled in the slit, and a lithographic substrate. With this apparatus, the pattern can be batch-transferred, thereby making it possible to easily manufacture electronic parts.
    Type: Application
    Filed: September 24, 2001
    Publication date: August 1, 2002
    Inventors: Akihiro Miyauchi, Lee Chahn, Mitsuru Hasegawa, Mitsuo Hayashibara, Hiroshi Sasaki
  • Patent number: 6328426
    Abstract: A printer device includes a plurality of discharge electrodes provided in a slit to which ink containing charged pigment particles is supplied, a plurality of opposing electrodes opposing the plurality of discharge electrodes, a pulse electric field applicator for forming a pulse electric field between the plurality of discharge electrodes and the plurality of opposing electrodes, and auxiliary electrodes. The auxiliary electrodes are provided at both sides of respective ones of the plurality of discharge electrodes, and a high or low potential is applied to the auxiliary electrodes so as to cancel out an electric interaction between respective ones of the plurality of discharge electrodes.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: December 11, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Lee Chahn, Hideki Shinohara, Shigetaka Fujiwara, Shuji Imazeki, Seiji Yonekura, Yoshiharu Nagae