Patents by Inventor Hirofumi Terasawa

Hirofumi Terasawa 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: 10518528
    Abstract: Provided is a printer control device that controls a printer that includes an ink jet head unit that has head arrays, in which three or more ink jet heads for ejecting ink from nozzle arrays are aligned in a nozzle array extending direction, the printer control device includes a head control section that causes an ink jet head unit to execute printing without using a designated head that is an ink jet head designated and all ink jet heads aligned on one side in the nozzle array extending direction with reference to the designated head, in a designation mode, in which inhibition of use of the ink jet heads is designated.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: December 31, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hirofumi Terasawa
  • Publication number: 20190054736
    Abstract: Provided is a printer control device that controls a printer that includes an ink jet head unit that has head arrays, in which three or more ink jet heads for ejecting ink from nozzle arrays are aligned in a nozzle array extending direction, the printer control device includes a head control section that causes an ink jet head unit to execute printing without using a designated head that is an ink jet head designated and all ink jet heads aligned on one side in the nozzle array extending direction with reference to the designated head, in a designation mode, in which inhibition of use of the ink jet heads is designated.
    Type: Application
    Filed: August 16, 2018
    Publication date: February 21, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hirofumi Terasawa
  • Publication number: 20080244138
    Abstract: A microcomputer includes a plurality of processing circuits for executing a plurality of interrupt processes each corresponding to one of a first plurality of causes) a cause register circuit for representing whether each of the first plurality of causes has been solved or unsolved, a processing circuit selection register for defining a plurality of correspondences each between one of the first plurality of causes and one of the plurality of processing circuits responsible to execute one the interrupt processes corresponding to the one of the first plurality of causes, and for outputting, in response to occurrence of one of the causes, to the plurality of processing circuits an interrupt signal representing that one of the interrupt processes should be executed, a vector signal indicating an area in which a content of the one of the interrupt processes corresponding to the one of the causes, and a first selection signal representing which one of the processing circuits should execute the one of the interrupt
    Type: Application
    Filed: March 21, 2008
    Publication date: October 2, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hirofumi Terasawa
  • Patent number: 6799157
    Abstract: An objective is to provide a microcomputer, electronic equipment and emulation method which can realize the optimum circumstance of evaluation while saving the number of terminals. An external bus is shared between external and emulation memories. In the emulation mode, the access of CPU to an internal ROM is switched to the access of CPU to the emulation memory through an external bus. The emulation mode is turned ON or OFF through a mode selection terminal or mode selection register. The emulation memory is controlled by a control signal CNT2 different from a control signal CNT1 which controls the external memory. A memory read signal in CNT2 become active at a timing earlier than that of a memory read signal in CNT1. Thus, the instruction is fetched and decoded within one clock cycle. A mode selection terminal is further provided for selecting a mode of performing the boot from the emulation memory, internal ROM or external memory and a made of selecting OPT mode.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 28, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Makoto Kudo, Hirofumi Terasawa, Yoshiyuki Miyayama
  • Patent number: 6646123
    Abstract: The present invention relates to a novel taxol derivative having an antitumor activity which is represented by formula (1). [In the formula (I), R1: a phenyl group, R2: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group or an alkoxyl group, R3: a hydrogen atom, a hydroxyl group, a halogen atom, an alkoxyl group, a group —O—R311 an acyloxy group or a group —O—CO—R31, (in which R31: an alkylamino group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group), R4 and R5: a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, Z1: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z2: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z3: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group].
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: November 11, 2003
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyama
  • Publication number: 20030162971
    Abstract: The present invention relates to a novel taxol derivative having an antitumor-activity which is represented by formula (1).
    Type: Application
    Filed: April 22, 2002
    Publication date: August 28, 2003
    Applicant: DAIICHI PHARMACEUTICAL CO., LTD.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyama
  • Patent number: 6552197
    Abstract: Disclosed are a process for the preparation of a compound represented by the formula (1), which comprises treating a compound represented by the formula (2) with methanesulfonic acid and then subjecting the thus-treated compound to recrystallization; and Compound (1) so obtained. This Compound (1) is free of hygroscopicity, excellent in filterability and solubility and easy in handling. Furthermore, according to the preparation process of the present invention, an unnecessary isomer can be converted into the target one and separation of the target isomer can be conducted easily.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: April 22, 2003
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Shinji Kamihara, Kazuaki Kanai, Shigeru Noguchi, Hirofumi Terasawa, Hiroaki Kitaoka
  • Patent number: 6545151
    Abstract: The present invention relates to a novel taxol derivative having an antitumor-activity which is represented by formula (1). [In the formula (I), R1: a phenyl group, R2: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group or an alkoxyl group, R3: a hydrogen atom, a hydroxyl group, a halogen atom, an alkoxyl group, a group —O—R31, an acyloxy group or a group —O—CO—R31 (in which R31: an alkylamino group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group), R4 and R5: a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, Z1: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z2: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z3: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group].
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: April 8, 2003
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyama
  • Patent number: 6504029
    Abstract: Disclosed are a process for the preparation of a compound represented by the formula (1), which comprises treating a compound represented by the formula (2) with methanesulfonic acid and then subjecting the thus-treated compound to recrystallization; and Compound (1) so obtained. This Compound (1) is free of hygroscopicity, excellent in filterability and solubility and easy in handling. Furthermore, according to the preparation process of the present invention, an unnecessary isomer can be converted into the target one and separation of the target isomer can be conducted easily.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: January 7, 2003
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Shinji Kamihara, Kazuaki Kanai, Shigeru Noguchi, Hirofumi Terasawa, Hiroaki Kitaoka
  • Patent number: 6407115
    Abstract: Accordingly, an object of this invention is to provide a hexa-cyclic compound represented by the following general formula: wherein R1 and R2 individually represent a hydrogen atom, a hydroxyl group, a C1-6 alkyl group (“C1-6 alkyl group means an alkyl group having 1 to 6 carbon atoms. Hereinafter defined in the same manner.) The present inventors have conducted extensive studies for the purpose of obtaining camptothecin derivatives with more excellent activity and higher safety, as well as excellent characteristics required for a drug to be administered, and found that hexa-cyclic compounds obtained by the addition of a water-soluble ring to camptothecin had characteristics superior to camptothecin. This finding has led to the completion of this invention.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: June 18, 2002
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki, Kouichi Uoto
  • Publication number: 20010041796
    Abstract: The present invention relates to a novel taxol derivative having an antitumor-activity which is represented by formula (1).
    Type: Application
    Filed: January 16, 2001
    Publication date: November 15, 2001
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyma
  • Publication number: 20010034446
    Abstract: Disclosed are a process for the preparation of a compound represented by the formula (1), which comprises treating a compound represented by the formula (2) with methanesulfonic acid and then subjecting the thus-treated compound to recrystallization; and Compound (1) so obtained.
    Type: Application
    Filed: June 11, 2001
    Publication date: October 25, 2001
    Applicant: DAIICHI PHARMACEUTICAL CO., LTD.
    Inventors: Shinji Kaminhara, Kazuaki Kanai, Shigeru Noguchi, Hirofumi Terasawa, Hiroaki Kitaoka
  • Patent number: 6211363
    Abstract: The present invention relates to a novel taxol derivative having an antitumor-activity which is represented by formula (1). [In the formula (I), R1: a phenyl group, R2: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group or an alkoxyl group, R3: a hydrogen atom, a hydroxyl group, a halogen atom, an alkoxyl group, a group —O—R31, an acyloxy group or a group —O—CO—R31, (in which R31: an alkylamino group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group), R4 and R5: a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, Z1: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z2: a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z3: an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group].
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: April 3, 2001
    Assignee: Daiichi Pharamaceutical Co., Ltd.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyama
  • Patent number: 6075140
    Abstract: The present invention relates to a novel taxol derivative having an antitumor activity which is represented by formula (1). ##STR1## [In the formula (I), R.sup.1 : a phenyl group, R.sup.2 : an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group or an alkoxyl group, R.sup.3 : a hydrogen atom, a hydroxyl group, a halogen atom, an alkoxyl group, a group --O--R.sup.31, an acyloxy group or a group --O--CO--R.sup.31, (in which R.sup.31 : an alkylamino group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group), R.sup.4 and R.sup.5 : a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, Z.sup.1 : a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z.sup.2 : a hydrogen atom, a hydroxyl group, a halogen atom or an alkyl group, Z.sup.3 : an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group].
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: June 13, 2000
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Takashi Ishiyama
  • Patent number: 5834476
    Abstract: A novel hexa-cyclic compound, a derivative of camptothecin, of the general formula: ##STR1## The compound is prepared from an aminoketone compound and a pyranoindolizine compound by the condensation-ring closing reaction. It is abundantly water-soluble, and has an excellent antitumour activity and a high degree of safety, and can be applied as an antitumour medicine for curing tumors of various kinds.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 10, 1998
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki, Kouichi Uoto
  • Patent number: 5770605
    Abstract: A novel hexa-cyclic compound, a derivative of camptothecin, of the general formula: ##STR1## The compound is prepared from an aminoketone compound and a pyranoindolizine compound by the condensation-ring closing reaction. It is abundantly water-soluble, and has an excellent antitumor activity and a high degree of safety, and can be applied as an antitumor medicine for curing tumors of various kinds.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: June 23, 1998
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki, Kouichi Uoto
  • Patent number: 5767296
    Abstract: A novel taxol derivative having the formula (I), in which the 10-position is modified to have a carbon-carbon bond, is disclosed. The taxol derivative of the present invention has an antitumor activity.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: June 16, 1998
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Hirofumi Terasawa, Tsunehiko Soga, Kiyoshi Nakayama
  • Patent number: 5658920
    Abstract: A novel hexa-cyclic compound, a derivative of camptothecin, of the general formula: ##STR1## The compound is prepared from an aminoketone compound and a pyranoindolizine compound by the condensation-ring closing reaction. It is abundantly water-soluble, and has an excellent antitumor activity and a high degree of safety, and can be applied as an antitumor medicine for curing tumors of various kinds.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: August 19, 1997
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki, Kouichi Uoto
  • Patent number: 5637770
    Abstract: A novel hexa-cyclic compound, a derivative of camptothecin, of the general formula: ##STR1## The compound is prepared from an aminoketone compound and a pyranoindolizine compound by the condensation-ring closing reaction. It is abundantly water-soluble, and has an excellent antitumour activity and a high degree of safety, and can be applied as an antitumour medicine for curing tumors of various kinds.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 10, 1997
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki, Kouichi Uoto
  • Patent number: 5061795
    Abstract: A novel hexa-cyclic compound, a derivative of camptothecin, of the general formura: ##STR1## The compound is prepared from an aminoketone compound and a pyranoindolizine compound through Friedlaender reaction. It has an excellent antitumour activity and a high degree of safety, and can be applied as an antitumour medicine for curing tumors of various kinds.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: October 29, 1991
    Assignees: Daiichi Pharmaceutical Co., Ltd., Kabushiki Kaisha Yakult Honsha
    Inventors: Hiroaki Tagawa, Masamichi Sugimori, Hirofumi Terasawa, Akio Ejima, Satoru Ohsuki