Patents by Inventor Shinji Ashida

Shinji Ashida 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: 20240082413
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-Lb-Lc- wherein the antibody is connected to the terminal of L1, and the antitumor compound is connected to the terminal of Lc with the nitrogen atom of the amino group at position 1 as a connecting position.
    Type: Application
    Filed: March 3, 2023
    Publication date: March 14, 2024
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Takeshi MASUDA, Hiroyuki NAITO, Takashi NAKADA, Masao YOSHIDA, Shinji ASHIDA, Hideki MIYAZAKI, Yuji KASUYA, Koji MORITA, Yuki ABE, Yusuke OGITANI
  • Publication number: 20240026030
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La—(CH2)n2—C(?O)—wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the carbonyl group of the —(CH2)n2—C(?O)— moiety with the nitrogen atom of the amino group at position 1 as the connecting position.
    Type: Application
    Filed: September 12, 2023
    Publication date: January 25, 2024
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki NAITO, Yusuke OGITANI, Takeshi MASUDA, Takashi NAKADA, Masao YOSHIDA, Shinji ASHIDA, Koji MORITA, Hideki MIYAZAKI, Yuji KASUYA, Ichiro HAYAKAWA, Yuki ABE
  • Patent number: 11795236
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-(CH2)n2-C(?O)— wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the carbonyl group of the —(CH2)n2-C(?O)— moiety with the nitrogen atom of the amino group at position 1 as the connecting position
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: October 24, 2023
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki Naito, Yusuke Ogitani, Takeshi Masuda, Takashi Nakada, Masao Yoshida, Shinji Ashida, Koji Morita, Hideki Miyazaki, Yuji Kasuya, Ichiro Hayakawa, Yuki Abe
  • Patent number: 11633493
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an antibody via a linker having a structure represented by the following formula: -L1-L2-LF-NH—(CH2)n1-La-Lb-Lc- wherein the antibody is connected to the terminal of L1, and the antitumor compound is connected to the terminal of Lc with the nitrogen atom of the amino group at position 1 as a connecting position.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: April 25, 2023
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Takeshi Masuda, Hiroyuki Naito, Takashi Nakada, Masao Yoshida, Shinji Ashida, Hideki Miyazaki, Yuji Kasuya, Koji Morita, Yuki Abe, Yusuke Ogitani
  • Patent number: 11628223
    Abstract: A novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, comprising substituted benzo[e]pyrrolo[1,2-a][1,4]diazepines represented by the [Formula 24], [Formula 25], [Formula 26], and/or [Formula 27].
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 18, 2023
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro Toda, Yusuke Ota, Fuminao Doi, Masaki Meguro, Ichiro Hayakawa, Shinji Ashida, Takeshi Masuda, Takashi Nakada, Mitsuhiro Iwamoto, Naoya Harada, Tomoko Terauchi, Daisuke Okajima, Kensuke Nakamura, Hiroaki Uchida, Hirofumi Hamada
  • Publication number: 20230084707
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Application
    Filed: April 5, 2022
    Publication date: March 16, 2023
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA, Mitsuhiro IWAMOTO, Naoya HARADA, Tomoko TERAUCHI, Daisuke OKAJIMA, Kensuke NAKAMURA, Hiroaki UCHIDA, Hirofumi HAMADA
  • Patent number: 11583590
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: February 21, 2023
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro Toda, Yusuke Ota, Fuminao Doi, Masaki Meguro, Ichiro Hayakawa, Shinji Ashida, Takeshi Masuda, Takashi Nakada, Mitsuhiro Iwamoto, Naoya Harada, Tomoko Terauchi, Daisuke Okajima, Kensuke Nakamura, Hiroaki Uchida, Hirofumi Hamada
  • Patent number: 11584800
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-(CH2)n2-C(?O)— wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the carbonyl group of the —(CH2)n2-C(?O)— moiety with the nitrogen atom of the amino group at position 1 as the connecting position.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: February 21, 2023
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki Naito, Yusuke Ogitani, Takeshi Masuda, Takashi Nakada, Masao Yoshida, Shinji Ashida, Koji Morita, Hideki Miyazaki, Yuji Kasuya, Ichiro Hayakawa, Yuki Abe
  • Publication number: 20220395579
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Application
    Filed: June 26, 2022
    Publication date: December 15, 2022
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA, Mitsuhiro IWAMOTO, Naoya HARADA, Tomoko TERAUCHI, Daisuke OKAJIMA, Kensuke NAKAMURA, Hiroaki UCHIDA, Hirofumi HAMADA
  • Publication number: 20220168440
    Abstract: A novel antibody-pyrrolobenzodiazepine (PBD) derivative conjugate, a medicine having therapeutic effect against tumor with the antibody-drug conjugate, and a method for treating a tumor by using the antibody-drug conjugate or medicine.
    Type: Application
    Filed: March 24, 2020
    Publication date: June 2, 2022
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA
  • Patent number: 11344270
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes a support frame and processing circuitry. The support frame supports an X-ray generator and an X-ray detector. The processing circuitry is configured to, when rotational acquisitions are performed multiple times after a contrast agent is injected one time, previously set a generation condition of an X-ray that is generated by the X-ray generator for each of the rotational acquisitions, the rotational acquisitions being performed while the support frame is rotated around a subject.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 31, 2022
    Assignees: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shinji Ashida, Satoru Ohishi
  • Publication number: 20220125943
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Application
    Filed: December 6, 2021
    Publication date: April 28, 2022
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA, Mitsuhiro IWAMOTO, Naoya HARADA, Tomoko TERAUCHI, Daisuke OKAJIMA, Kensuke NAKAMURA, Hiroaki UCHIDA, Hirofumi HAMADA
  • Patent number: 11261261
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-(CH2)n2-C(?O)— wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the carbonyl group of the —(CH2)n2-C(?O)— moiety with the nitrogen atom of the amino group at position 1 as the connecting position.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: March 1, 2022
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki Naito, Yusuke Ogitani, Takeshi Masuda, Takashi Nakada, Masao Yoshida, Shinji Ashida, Koji Morita, Hideki Miyazaki, Yuji Kasuya, Ichiro Hayakawa, Yuki Abe
  • Patent number: 11185594
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the formula: L1-L2-LP-NH—(CH2)n1-La-Lb-Lc or -L1-L2-LP- wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the terminal Lc or LP with the nitrogen atom of the amino group at position 1 as the connecting position.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: November 30, 2021
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki Naito, Takeshi Masuda, Takashi Nakada, Masao Yoshida, Shinji Ashida, Hideki Miyazaki, Yuji Kasuya, Koji Morita, Yusuke Ogitani, Yuki Abe
  • Patent number: 10973924
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-Lb-Lc- wherein the antibody is connected to the terminal of L1, and the antitumor compound is connected to the terminal of Lc with the nitrogen atom of the amino group at position 1 as a connecting position.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: April 13, 2021
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Takeshi Masuda, Hiroyuki Naito, Takashi Nakada, Masao Yoshida, Shinji Ashida, Hideki Miyazaki, Yuji Kasuya, Koji Morita, Yuki Abe, Yusuke Ogitani
  • Publication number: 20200385486
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety and has an excellent therapeutic effect, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER2 antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-(CH2)n2-C(?O)— wherein the anti-HER2 antibody is connected to the terminal L1, and the antitumor compound is connected to the carbonyl group of the —(CH2)n2-C(?O)— moiety with the nitrogen atom of the amino group at position 1 as the connecting position.
    Type: Application
    Filed: August 19, 2020
    Publication date: December 10, 2020
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki NAITO, Yusuke OGITANI, Takeshi MASUDA, Takashi NAKADA, Masao YOSHIDA, Shinji ASHIDA, Koji MORITA, Hideki MIYAZAKI, Yuji KASUYA, Ichiro HAYAKAWA, Yuki ABE
  • Publication number: 20200282073
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an antibody via a linker having a structure represented by the following formula: -L1-L2-LF-NH—(CH2)n1-La-Lb-Lc- wherein the antibody is connected to the terminal of L1, and the antitumor compound is connected to the terminal of Lc with the nitrogen atom of the amino group at position 1 as a connecting position.
    Type: Application
    Filed: March 24, 2020
    Publication date: September 10, 2020
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Takeshi MASUDA, Hiroyuki NAITO, Takashi NAKADA, Masao YOSHIDA, Shinji ASHIDA, Hideki MIYAZAKI, Yuji KASUYA, Koji MORITA, Yuki ABE, Yusuke OGITANI
  • Publication number: 20200261594
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Application
    Filed: September 28, 2018
    Publication date: August 20, 2020
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA, Mitsuhiro IWAMOTO, Naoya HARADA, Tomoko TERAUCHI, Daisuke OKAJIMA, Kensuke NAKAMURA, Hiroaki UCHIDA, Hirofumi HAMADA
  • Patent number: 10729782
    Abstract: As an antitumor drug which is excellent in terms of antitumor effect and safety, there is provided an antibody-drug conjugate in which an antitumor compound represented by the following formula (I) is conjugated to an antibody via a linker having a structure represented by the following formula: -L1-L2-LP-NH—(CH2)n1-La-Lb-Lc- or -L1-L2-LP- wherein the antibody is connected to the terminal of L1, the antitumor compound is connected to the terminal of Lc or LP, and any one or two or more of linkers of L1, L2, and LP has a hydrophilic structure.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: August 4, 2020
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroyuki Naito, Takashi Nakada, Masao Yoshida, Shinji Ashida, Takeshi Masuda, Hideki Miyazaki, Yuji Kasuya, Yuki Abe, Yusuke Ogitani
  • Publication number: 20200205762
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes a support frame and processing circuitry. The support frame supports an X-ray generator and an X-ray detector. The processing circuitry is configured to, when rotational acquisitions are performed multiple times after a contrast agent is injected one time, previously set a generation condition of an X-ray that is generated by the X-ray generator for each of the rotational acquisitions, the rotational acquisitions being performed while the support frame is rotated around a subject.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Applicants: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shinji ASHIDA, Satoru OHISHI