Patents by Inventor Soichiro TAMAOKI

Soichiro TAMAOKI 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: 11940428
    Abstract: A preparative liquid chromatograph including an analysis channel (2), an injector (6), a separation column (8), a detector (10), a plurality of fraction collectors (14-1 to 14-n), a switching valve (12) that switches fraction collectors (14-1 to 14-n) to be connected to the outlet of the detector (10) among the plurality of fraction collectors (14-1 to 14-n), and a controller (16) for controlling operations of the plurality of fraction collectors (14-1 to 14-n) and the switching valve (12). In a case where the number of remaining unused collection containers of the fraction collector in use, which is connected to the outlet of the detector, falls below the number of buffers which is an integer of two or more, the controller (16) is configured to switch the switching valve (12) while the fraction collector in use is not performing a peak collection operation.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: March 26, 2024
    Assignee: SHIMADZU CORPORATION
    Inventors: Soichiro Tamaoki, Tomoyuki Yamazaki, Shohei Sato
  • Publication number: 20240044847
    Abstract: Provided is a preparative liquid chromatograph capable of coping with a case where actual second delay time changes after start of a fractionation sequence. When a specific component detected as a peak in both a first detector and a second detector is injected during execution of a fractionation sequence, a control device executes maintenance operation of time difference information stored in an information storage area. In the maintenance operation, the control device executes peak determination as to whether or not a difference between first retention time and second retention time falls within a predetermined allowable range. By the above, the control device checks whether or not the second delay time from when a component is detected by the second detector to when the component reaches a fraction collector changes from a previous state.
    Type: Application
    Filed: July 13, 2023
    Publication date: February 8, 2024
    Applicant: SHIMADZU CORPORATION
    Inventors: Soichiro TAMAOKI, Tomoyuki YAMAZAKI, Shohei SATO
  • Patent number: 11828737
    Abstract: In a preparative liquid chromatograph, a control device for controlling at least operation of a sample injection part includes a holding part for holding a chromatogram-for-setting created in advance for a sample to be analyzed, and an injection program creating part configured to create an injection program that defines timings at which injection operations are executed based on the chromatogram-for-setting, so that, in the case where the number of injections in a multiple injection mode is set, a peak of a chromatogram of the sample to be analyzed injected in each injection operation does not overlap a peak of a chromatogram of the sample to be analyzed injected in another injection operation.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: November 28, 2023
    Assignee: Shimadzu Corporation
    Inventors: Soichiro Tamaoki, Tsutomu Okoba, Takayuki Iriki, Shiori Ueda
  • Patent number: 11782034
    Abstract: A fraction collector control device includes a peak designation part that displays a chromatogram for setting and requires a user to select at least one peak in the chromatogram for setting, a parameter extraction part that extracts, as a parameter, a signal level and/or a slope at a start point and an end point of each peak designated by a user, and a threshold candidate generation part that generates, based on the parameter extracted by the parameter extraction part, a threshold candidate usable as a common threshold for detecting start points of all peaks designated by a user and a common threshold for detecting end points of all peaks designated by a user.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 10, 2023
    Assignee: Shimadzu Corporation
    Inventors: Soichiro Tamaoki, Tsutomu Okoba, Takayuki Iriki, Shiori Ueda
  • Patent number: 11733215
    Abstract: In a preparative liquid chromatograph, a control device for controlling at least operation of a sample injection part includes a holding part for holding a chromatogram-for-setting created in advance for a sample to be analyzed, and an injection program creating part configured to create an injection program that defines timings at which injection operations are executed based on the chromatogram-for-setting, so that, in the case where the number of injections in a multiple injection mode is set, a peak of a chromatogram of the sample to be analyzed injected in each injection operation does not overlap a peak of a chromatogram of the sample to be analyzed injected in another injection operation.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: August 22, 2023
    Assignee: Shimadzu Corporation
    Inventors: Soichiro Tamaoki, Tsutomu Okoba, Takayuki Iriki, Shiori Ueda
  • Publication number: 20220317101
    Abstract: A separation column (6), an injector (4) that injects a sample into a mobile phase flowing through a flow path (16) leading to the separation column (6), at least one detector (8;10) that is fluidly connected downstream of the separation column (6), and generates a plurality of detector signals different from each other derived from a component in a sample separated by the separation column (6), a fraction collector (12) for fractionating and collecting a portion containing a component separated by the separation column (6) in an eluate from the separation column (6) into an individual collection container, and a controller (14) that detects a component peak in a plurality of chromatograms based on each of a plurality of the detector signals and controls operation of the fraction collector (12) based on a result of the detection are included.
    Type: Application
    Filed: March 24, 2022
    Publication date: October 6, 2022
    Inventors: Shiori UEDA, Tomohiro SHAGAWA, Soichiro TAMAOKI
  • Publication number: 20220299488
    Abstract: A preparative liquid chromatograph including an analysis channel (2), an injector (6), a separation column (8), a detector (10), a plurality of fraction collectors (14-1 to 14-n), a switching valve (12) that switches fraction collectors (14-1 to 14-n) to be connected to the outlet of the detector (10) among the plurality of fraction collectors (14-1 to 14-n), and a controller (16) for controlling operations of the plurality of fraction collectors (14-1 to 14-n) and the switching valve (12). In a case where the number of remaining unused collection containers of the fraction collector in use, which is connected to the outlet of the detector, falls below the number of buffers which is an integer of two or more, the controller (16) is configured to switch the switching valve (12) while the fraction collector in use is not performing a peak collection operation.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 22, 2022
    Inventors: Soichiro TAMAOKI, Tomoyuki YAMAZAKI, Shohei SATO
  • Publication number: 20220283132
    Abstract: A preparative liquid chromatograph for separating and extracting components in a sample, the preparative liquid chromatograph including a separation channel (2) through which a mobile phase flows, an injector (6) that injects the sample into the mobile phase, a separation column (8) for separating components in the sample injected into the mobile phase, the separation column (8) being provided downstream of the injector (6) on the separation channel (2), a detector (10) for detecting peaks of the components separated by the separation column (8), a fraction collector (12) configured to collect an eluate from the separation column (8) into a plurality of collection containers (20:22) at a downstream of the detector (10) while fractionating the eluate, and a controller (14) for controlling operation of the fraction collector (12), wherein the fraction collector (12) is provided with peak collection containers (20) and waste liquid collection containers (22), each peak collection container (20) is used for colle
    Type: Application
    Filed: February 20, 2022
    Publication date: September 8, 2022
    Inventors: Shiori UEDA, Tomohiro SHAGAWA, Soichiro TAMAOKI, Tomoyuki YAMAZAKI, Shohei SATO
  • Publication number: 20200240966
    Abstract: A fraction collector control device includes a peak designation part that displays a chromatogram for setting and requires a user to select at least one peak in the chromatogram for setting, a parameter extraction part that extracts, as a parameter, a signal level and/or a slope at a start point and an end point of each peak designated by a user, and a threshold candidate generation part that generates, based on the parameter extracted by the parameter extraction part, a threshold candidate usable as a common threshold for detecting start points of all peaks designated by a user and a common threshold for detecting end points of all peaks designated by a user.
    Type: Application
    Filed: March 7, 2017
    Publication date: July 30, 2020
    Inventors: Soichiro TAMAOKI, Tsutomu OKOBA, Takayuki IRIKI, Shiori UEDA
  • Publication number: 20200064315
    Abstract: A fraction collector controller includes a threshold storing part, a peak detecting part, a number-of-points-of-data setting part, and a control part. The peak detecting part retrieves, at regular intervals, signals that are from a detector of a liquid chromatograph and are used as points of data, and detects a start point and an end point of a peak by comparing a signal strength and/or an inclination of each of the points of data with the threshold(s). The number-of-points-of-data setting part is configured to set a number of the points of data with which the peak detecting part compares the threshold(s) to detect a start point and an end point of a peak.
    Type: Application
    Filed: March 7, 2017
    Publication date: February 27, 2020
    Applicant: Shimadzu Corporation
    Inventors: Soichiro TAMAOKI, Tsutomu OKOBA, Takayuki IRIKI, Shiori UEDA
  • Publication number: 20200033303
    Abstract: In a preparative liquid chromatograph, a control device for controlling at least operation of a sample injection part includes a holding part for holding a chromatogram-for-setting created in advance for a sample to be analyzed, and an injection program creating part configured to create an injection program that defines timings at which injection operations are executed based on the chromatogram-for-setting, so that, in the case where the number of injections in a multiple injection mode is set, a peak of a chromatogram of the sample to be analyzed injected in each injection operation does not overlap a peak of a chromatogram of the sample to be analyzed injected in another injection operation.
    Type: Application
    Filed: April 5, 2017
    Publication date: January 30, 2020
    Inventors: Soichiro TAMAOKI, Tsutomu OKOBA, Takayuki IRIKI, Shiori UEDA