Patents by Inventor Keiji Saito

Keiji Saito 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: 11981686
    Abstract: An object of the present invention is to provide a compound that has a specific chemical structure having an activation effect on SIRT6 and is useful as an active component for preventing and treating inflammatory diseases, and the present invention relates to a compound represented by Formula (1) or a pharmaceutically acceptable salt thereof, where each symbol in Formula (1) has the same definition as that described in the specification.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: May 14, 2024
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Junya Kawai, Osamu Iwamoto, Yuma Umezaki, Katsuyoshi Nakajima, Hiroyuki Tsuruoka, Keiji Saito, Nobuya Kurikawa, Natsumi Nishihama, Shinji Tanaka, Momoko Ogitani, Tomohiro Honda, Wataru Saitoh, Tsuyoshi Soneda, Nobuyuki Ohkawa
  • Publication number: 20240150309
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Publication number: 20240142955
    Abstract: A method of monitoring a plant by using a Mahalanobis distance calculated from data of a plurality of variables each of which indicates a state of the plant includes: a dividing step of dividing a range of a single variable which indicates a state of the plant into a plurality of first range bands on the basis of a frequency distribution of the single variable; and a unit space creating step of creating a plurality of unit spaces which serve as a basis of calculation of the Mahalanobis distance on the basis of the respective data of the plurality of variables respectively corresponding to a plurality of second range bands of the single variable determined on the basis of the plurality of first range bands.
    Type: Application
    Filed: March 7, 2022
    Publication date: May 2, 2024
    Inventors: Ichiro NAGANO, Mayumi SAITO, Kuniaki AOYAMA, Keiji EGUCHI
  • Publication number: 20240125246
    Abstract: A plant monitoring device (20) is provided with: a detection value acquisition unit (211) that acquires a bundle of detection values; a first Mahalanobis distance calculation unit (212) that calculates a first Mahalanobis distance by using as a reference a unit space generated on the basis of a bundle of past detection values; a first SN ratio calculation unit (214) that calculates a first SN ratio for each of a plurality of evaluation items; a second Mahalanobis distance calculation unit (215) that calculates a second Mahalanobis distance by increasing or decreasing each of the detection values; a second SN ratio acquisition unit (216) that converts the first SN ratio for each of the evaluation items and acquires a second SN ratio on the basis of the first and second Mahalanobis distances; and an addition unit (217) that calculates an added value of a plurality of the second SN ratios acquired within a prescribed period for each of the evaluation items.
    Type: Application
    Filed: November 17, 2020
    Publication date: April 18, 2024
    Inventors: Ichiro NAGANO, Mayumi SAITO, Keiji EGUCHI, Kuniaki AOYAMA
  • Publication number: 20240118171
    Abstract: A plant monitoring method using a Mahalanobis distance calculated from data of a plurality of variables indicating the state of the plant. The plant monitoring method includes: acquiring data in a first period in the past up to the current point of time as first data; predicting data in a second period from the current point of time as second data; and creating, on the basis of the first data and the second data, a unit space that serves as a base for calculating the Mahalanobis distance. In the prediction step, the second data is predicted on the basis of: data in a third period obtained, as third data, by shifting the first period to the past by a prescribed period; data in a fourth period obtained, as fourth data, by shifting the second period to the past by the prescribed period, and the first data.
    Type: Application
    Filed: April 19, 2022
    Publication date: April 11, 2024
    Inventors: Ichiro NAGANO, Mayumi SAITO, Kuniaki AOYAMA, Keiji EGUCHI
  • Patent number: 11942545
    Abstract: A semiconductor device of an embodiment includes a substrate, a first electrode, a second electrode, the first electrode provided between the substrate and the second electrode, the oxide semiconductor layer in contact with the first electrode, an oxide semiconductor layer between the first electrode and the second electrode, the oxide semiconductor layer contains Zn and at least one first element selected from In, Ga, Si, Al, and Sn; a conductive layer between the oxide semiconductor layer and the second electrode, the conductive layer in contact with the second electrode, the conductive layer contains O and at least one second element selected from the group consisting of In, Ga, Si, Al, Sn, Zn, and Ti, a gate electrode; and a gate insulating layer between the oxide semiconductor layer and the gate electrode.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: March 26, 2024
    Assignee: Kioxia Corporation
    Inventors: Yuta Sato, Tomomasa Ueda, Nobuyoshi Saito, Keiji Ikeda
  • Publication number: 20240087616
    Abstract: A semiconductor memory device comprises: memory layers arranged in a first direction; and a first and a second via wirings having different positions in a second direction. The memory layer comprises: a first transistor electrically connected to the first via wiring; a memory portion electrically connected to the first transistor; a wiring electrically connected to the first transistor; a second transistor electrically connected to the second via wiring; and an electrode provided in a current path between the second transistor and the wiring. The second transistor comprises: a semiconductor layer electrically connected to the electrode and the second via wiring; and a gate electrode facing the semiconductor layer. The semiconductor layer faces at least one of surfaces on one side or the other side in the first direction of the gate electrode. The electrode includes a portion arranged with the second via wiring in a third direction.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 14, 2024
    Applicant: Kioxia Corporation
    Inventors: Takafumi MASUDA, Nobuyoshi SAITO, Mutsumi OKAJIMA, Keiji IKEDA
  • Publication number: 20240081042
    Abstract: A semiconductor memory device comprises: a first memory layer; and a first via wiring and a second via wiring extending in a first direction, and having different positions from each other in a second direction. The first memory layer comprises: a first transistor electrically connected to the first via wiring; a memory portion electrically connected to the first transistor; a first wiring electrically connected to the first transistor; a second transistor electrically connected to the second via wiring and the first wiring; a first electrode electrically connected to the second transistor; and a second electrode electrically connected to the first wiring and first electrode. A length of the second electrode in the first direction is larger than one or both of a length of the first wiring in the first direction and a length of the first conductive layer in the first direction.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Applicant: Kioxia Corporation
    Inventors: Takafumi MASUDA, Mutsumi OKAJIMA, Nobuyoshi SAITO, Keiji IKEDA
  • Patent number: 11834427
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: December 5, 2023
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Publication number: 20230331700
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: A: e.g., Benzene, E: e.g., —CH2—, G: e.g., a 5-membered aromatic heterocyclic ring, X: e.g., cyclohexane, J: e.g., a 5-membered aromatic heterocyclic ring, Y: e.g., a phenyl group, R1, R2, R3: e.g., a halogen atom, R4: e.g., a C1-C6 alkyl group, R5: e.g., a hydrogen atom, R6a, R6b, R6c, R6d: e.g., a hydrogen atom, R7: e.g., a hydrogen atom, R8: e.g., a hydrogen atom, n1, n2, n3: e.g., 1.
    Type: Application
    Filed: November 21, 2022
    Publication date: October 19, 2023
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Toru Taniguchi, Osamu Iwamoto, Keiji Saito, Katsuyoshi Nakajima, Yasuyuki Ogawa, Nobuya Kurikawa, Seiko Nagata, Kaori Ito, Eriko Kioi
  • Publication number: 20230136988
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Application
    Filed: October 13, 2022
    Publication date: May 4, 2023
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Publication number: 20230058950
    Abstract: An object of the present invention is to provide a compound that has a specific chemical structure having an activation effect on SIRT6 and is useful as an active component for preventing and treating inflammatory diseases, and the present invention relates to a compound represented by Formula (1) or a pharmaceutically acceptable salt thereof, where each symbol in Formula (1) has the same definition as that described in the specification.
    Type: Application
    Filed: January 23, 2020
    Publication date: February 23, 2023
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Junya KAWAI, Osamu IWAMOTO, Yuma UMEZAKI, Katsuyoshi NAKAJIMA, Hiroyuki TSURUOKA, Keiji SAITO, Nobuya KURIKAWA, Natsumi NISHIHAMA, Shinji TANAKA, Momoko OGITANI, Tomohiro HONDA, Wataru SAITOH, Tsuyoshi SONEDA, Nobuyuki OHKAWA
  • Publication number: 20220411416
    Abstract: The present invention addresses the problem of providing a compound for prophylaxis and/or treatment of central inflammatory diseases, or a pharmacologically acceptable salt thereof. The present invention addresses a compound of a general formula (I) or a pharmacologically acceptable salt thereof as a means to solve the problem.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 29, 2022
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Yasuyuki Ogawa, Mitsuhiro Makino, Kaori Ito, Seiko Nagata, Makoto Hirasawa
  • Patent number: 11512067
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: A: e.g., Benzene, E: e.g., —CH2—, G: e.g., a 5-membered aromatic heterocyclic ring, X: e.g., cyclohexane, J: e.g., a 5-membered aromatic heterocyclic ring, Y: e.g., a phenyl group, R1, R2, R3: e.g., a halogen atom, R4: e.g., a C1-C6 alkyl group, R5: e.g., a hydrogen atom, R6a, R6b, R6c, R6d: e.g., a hydrogen atom, R7: e.g., a hydrogen atom, R8: e.g., a hydrogen atom, n1, n2, n3: e.g., 1.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: November 29, 2022
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Toru Taniguchi, Osamu Iwamoto, Keiji Saito, Katsuyoshi Nakajima, Yasuyuki Ogawa, Nobuya Kurikawa, Seiko Nagata, Kaori Ito, Eriko Kioi
  • Patent number: 11472784
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: October 18, 2022
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Patent number: 11407746
    Abstract: The present invention addresses the problem of providing a compound for prophylaxis and/or treatment of central inflammatory diseases, or a pharmacologically acceptable salt thereof. The present invention addresses a compound of a general formula (I) or a pharmacologically acceptable salt thereof as a means to solve the problem. [R1: a C1-C6 alkyl group or the like, R2: a C1-C6 alkyl group or the like, A: a 5-membered aromatic hetero-ring or the like, R3, R3?: a C1-C6 alkyl group or the like.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 9, 2022
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Yasuyuki Ogawa, Mitsuhiro Makino, Kaori Ito, Seiko Nagata, Makoto Hirasawa
  • Publication number: 20210292292
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 23, 2021
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Patent number: 10975052
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: April 13, 2021
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Patent number: 10947289
    Abstract: The present invention provides a modified atrial natriuretic peptide that exhibits prolonged duration in blood and maintains cGMP elevating activity. The present invention provides a modified peptide in which at least one sugar substance is linked directly through a glycosidic bond or via a linker structure to at least one hANP peptide, or a pharmaceutically acceptable salt thereof, a medicament comprising the modified peptide or the salt thereof as an active ingredient, etc.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: March 16, 2021
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Mitsuhiro Iwamoto, Takahiro Yamaguchi, Yutaka Mori, Keiji Saito, Takeshi Honda, Takahiro Nagayama
  • Publication number: 20210040170
    Abstract: The present invention provides a modified atrial natriuretic peptide that exhibits prolonged duration in blood and maintains cGMP elevating activity. The present invention provides a modified peptide in which at least one sugar substance is linked directly through a glycosidic bond or via a linker structure to at least one hANP peptide, or a pharmaceutically acceptable salt thereof, a medicament comprising the modified peptide or the salt thereof as an active ingredient, etc.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 11, 2021
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Mitsuhiro IWAMOTO, Takahiro YAMAGUCHI, Yutaka MORI, Keiji SAITO, Takeshi HONDA, Takahiro NAGAYAMA