Abstract: An optical filter includes a first loop mirror, a second loop mirror, a first waveguide optically coupled to the first loop mirror and the second loop mirror, a second waveguide optically coupled to the first loop mirror and the second loop mirror, a first access waveguide optically coupled to the first waveguide, a second access waveguide optically coupled to the second waveguide, and an output section, wherein the first loop mirror includes a first loop waveguide and a first multiplexer/demultiplexer, the second loop mirror includes a second loop waveguide and a second multiplexer/demultiplexer, the output section includes a third loop waveguide, a third multiplexer/demultiplexer, a third waveguide, and a fourth waveguide, the third loop waveguide optically coupled to the second loop waveguide and the third multiplexer/demultiplexer, the third waveguide and the fourth waveguide optically coupled to the third multiplexer/demultiplexer, and the output section.
Type:
Application
Filed:
September 12, 2022
Publication date:
March 23, 2023
Applicants:
Sumitomo Electric Industries, Ltd., National University Corporation Hokkaido University
Abstract: Provided is a composition for treating cartilage injury lesion that is combined with a concentrated bone marrow aspirate and applied to a cartilage injury lesion, that has flowability when applied to the cartilage injury lesion, and that contains a monovalent metal salt of alginic acid. Thereby, a novel composition for treating cartilage injury lesion that can be used to restore and/or regenerate cartilage tissue is provided.
Type:
Application
Filed:
January 15, 2021
Publication date:
March 16, 2023
Applicants:
National University Corporation Hokkaido University, Mochida Pharmaceutical Co., Ltd.
Inventors:
Norimasa IWASAKI, Tomohiro ONODERA, Atsushi URITA, Ryo JO
Abstract: The present invention relates to a method of producing a chitin oligomer, including subjecting chitin-containing biomass to partial hydrolysis while pulverizing the chitin-containing biomass with a pulverization apparatus in the co-presence of water and an acid catalyst selected from phosphoric acid, nitrous acid, and an organic acid (Method 1); a method of producing N-acetylglucosamine, including hydrolyzing a chitin oligomer obtained by the Method 1 by adding water thereto, followed by heating (Method 2); and a method of producing a 1-O-alkyl-N-acetylglucosamine, including alcoholyzing a chitin oligomer by adding an alcohol thereto (Method 3).
Type:
Grant
Filed:
January 19, 2017
Date of Patent:
March 14, 2023
Assignees:
SHOWA DENKO K. K., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: [Problem] An object of the present invention is to produce cancer cell clusters with intrinsic biological properties as cancer tissues, such as morphological polarity and tissue motion polarity, in vitro. [Solution] The present invention relates to a cell culture substrate including a base material and a biocompatible polymer layer, the substrate including a plurality of rough sections on the surface of the substrate, wherein the rough sections are not covered with the biocompatible polymer layer, have a predetermined surface structure with a predetermined shape, and are disposed at predetermined intervals. With the present invention, it is possible to obtain a live cancer cell aggregate having morphological polarity and tissue motion polarity similar to that observed in vivo, by a very easy operation of culturing cancer cells on a cell culture substrate having a predetermined structure, thereby performing live imaging of microtumors in vitro is enabled, which has been conventionally impossible.
Type:
Grant
Filed:
April 2, 2018
Date of Patent:
March 14, 2023
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: Provided is a method of assisting the detection of nonalcoholic steatohepatitis (NASH), which is far less invasive than liver biopsy and is based on simple operations that do not require skilled technical personnel. The present invention is a method of assisting the detection of NASH, which includes: a) measuring the amount of LDL-TG contained in a test blood sample isolated from a living body; b) measuring the amount of at least one component selected from the group consisting of LDL-C, LDL subfraction-C, IIDL-C, HDL subfraction-C, ApoB, ApoE, total cholesterol, ALT, and AST contained in the test blood sample; and c) determining the possibility of developing and/or having NASH by using the amount of LDL-TG in combination with the amount of the at least one component.
Type:
Application
Filed:
February 4, 2021
Publication date:
March 2, 2023
Applicants:
Denka Company Limited, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
Abstract: To provide novel low-temperature sinterable copper particles that can be sintered even at a low temperature of, for example, around 100° C. or less, and a method for producing a sintered body by using the same. The low-temperature sinterable copper particles according to the present invention are coated with a carboxylic acid, and a surface of the copper particle is oxidized so as to have a cuprous oxide fraction (Cu2O/(Cu+Cu2O)) in the copper particle of 4% by mass or less or so as to have an average coating thickness of cuprous oxide of 10 nm or less. The low-temperature sinterable copper particles are subjected to low-temperature firing in an atmosphere of 0.01 Pa or less.
Type:
Grant
Filed:
November 29, 2017
Date of Patent:
February 28, 2023
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: Realized is reliable fixation of a material in a fluid state containing a monovalent metal salt of alginic acid when the material is applied to a subject. A combination of compositions comprising a first material composition containing a monovalent metal salt of alginic acid and a second material composition containing a cross-linking agent having an action of cross-linking the monovalent metal salt of alginic acid, wherein the combination is to be used in such a way as to apply the first material composition to a subject in a fluid state and contact the second material composition with the first material composition applied to the subject to gel at least a part of the first material composition, wherein the first material composition further contains a coloring component so that a formation state of a gel coat on a surface of the first material composition applied to the subject can be evaluated.
Type:
Application
Filed:
January 13, 2021
Publication date:
February 16, 2023
Applicants:
MOCHIDA PHARMACEUTICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: An optical filter includes a first loop mirror, a second loop mirror, a first waveguide optically coupled to the first loop mirror and the second loop mirror, and a first access waveguide. The first loop mirror includes a first loop waveguide and a first multiplexer/demultiplexer. The second loop mirror includes a second loop waveguide and a second multiplexer/demultiplexer. The first loop waveguide is optically coupled to the first multiplexer/demultiplexer. The second loop waveguide is optically coupled to the second multiplexer/demultiplexer. The first waveguide is optically coupled to the first multiplexer/demultiplexer and the second multiplexer/demultiplexer. The first access waveguide is optically coupled to the first waveguide.
Type:
Application
Filed:
July 8, 2022
Publication date:
February 9, 2023
Applicants:
SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: A retractor is provided that can form a joint cavity internal space for a field of view for an endoscope and practice of a treatment in a state where a wound area is spread. A retractor includes first arm portions 2 and 3 and a second arm portion 4 positioned between the first arm portions 2 and 3. The first arm portions 2 and 3 include first claw portions 12 and 13 to be hung on a wound area entrance edge. The second arm portion 4 includes a second claw portion 14 to be hung on the wound area entrance edge. When the first arm portions 2 and 3 and the second arm portion 4 are in a closed state, the first claw portions 12 and 13 and the second claw portion 14 overlap with each other.
Type:
Application
Filed:
January 13, 2021
Publication date:
February 9, 2023
Applicants:
MOCHIDA PHARMACEUTICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: A spectral image capturing method using a spectral camera control device installed in aircraft, the method comprising: a) setting an exposure time of the spectral camera so that a current exposure time is determined (S2), b) determining whether or not either an amount of attitude change or an amount of position change of the spectral camera per exposure time exceeds a predetermined threshold based on a spatial resolution of the spectral camera (S4), c1) when exceeding the predetermined threshold, resetting the current exposure time to be shorter (S5), c2) when not exceeding the predetermined threshold, not resetting the current exposure time to be shorter, and d) capturing a spectral image in a snapshot mode with the spectral camera using the reset exposure time, wherein when the transmission wavelength of the liquid crystal tunable filter is switched while the aircraft is in a stationary flight, steps b) to d) are repeated.
Type:
Grant
Filed:
November 20, 2020
Date of Patent:
February 7, 2023
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: This light absorbing device includes: a light reflecting layer; a dielectric layer disposed on the light reflecting layer; and a plurality of metal nanostructures disposed on the dielectric layer. A portion of each of the plurality of metal nanostructures is buried in the dielectric layer and another portion thereof is exposed to the outside.
Type:
Grant
Filed:
December 25, 2018
Date of Patent:
January 31, 2023
Assignee:
National University Corporation Hokkaido University
Abstract: A spectral camera control device, being installed, along with a spectral camera provided with a liquid crystal tunable filter, in an aircraft capable of stationary flight. The spectral camera control device causes the spectral camera to capture a spectral image in a snapshot mode each time a transmission wavelength of the liquid crystal tunable filter is switched while the aircraft is in stationary flight, and the spectral camera control device causes a plurality of spectral images to be captured in succession at a same transmission wavelength when an SN ratio of the captured spectral image is less than a predetermined threshold.
Type:
Grant
Filed:
November 20, 2020
Date of Patent:
January 3, 2023
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: An object of the present invention is to provide cellulose acetate that has excellent compatibility with a resin, can reinforce a resin, and has excellent thermal stability. An embodiment of the present invention is cellulose acetate having a cellulose triacetate I crystal structure, wherein a temperature at which a weight loss relative to weight at 100° C. reaches 5% is 200° C. or higher when the cellulose acetate is heated at a heating rate of 10° C./min under a nitrogen atmosphere.
Type:
Grant
Filed:
June 12, 2019
Date of Patent:
December 13, 2022
Assignees:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
Inventors:
Yasumitsu Uraki, Haruo Konno, Shu Shimamoto
Abstract: The present invention relates to a method for screening an anticancer agent by causing drosophila having the characteristics of a) expression of mutant Ras85D, b) deletion or suppressed expression of a p53 gene, c) overexpression of a cyclin E gene, and d) deletion or suppressed expression of a Med gene to ingest a test substance and comparing the survival rate thereof with the survival rate of drosophila that did not ingest the test substance. The present invention also relates to a combination drug of at least two kinase inhibitors for treatment of pancreatic cancer and to kinase inhibitors for use in said combination drug.
Type:
Application
Filed:
March 1, 2021
Publication date:
December 8, 2022
Applicant:
National University Corporation Hokkaido University
Abstract: The present invention provides a method for assessing the possibility of onset or progression of chronic kidney allograft rejection or chronic kidney disease in a test subject, by using, as an indicator, the level of SYT17 protein in a urine-derived specimen collected from the test subject. The present invention also provides: a pharmaceutical composition for preventing and/or treating chronic kidney allograft rejection or chronic kidney disease, the pharmaceutical composition including at least one substance selected from the group consisting of a specific antibody to SYT17, a derivative of the specific antibody, and an inhibitory nucleic acid against SYT17; and a test kit for use in assessing the possibility of onset or progression of chronic kidney allograft rejection or chronic kidney disease, the test kit including a specific antibody to SYT17 or a derivative of the specific antibody.
Type:
Application
Filed:
February 1, 2021
Publication date:
December 8, 2022
Applicant:
National University Corporation Hokkaido University
Abstract: A lipid membrane structure includes, as lipid components, a lipid compound represented by Formula (I): (R1)(R2)C(OH)—(CH3)a—(O—CO)b—X??(I) [in the formula, a represents an integer of 3 to 5; b represents an integer of 0 or 1; R1 and R2 each independently represents a linear hydrocarbon group that may have —CO—O—; and X represents a 5- to 7-membered non-aromatic heterocyclic group or a group represented by Formula (B) (in the formula, d represents an integer of 0 to 3, and R3 and R4 each independently represents a C1-4 alkyl group or a C2-4 alkenyl group, where, R3 and R4 may be bonded to each other to form a 5- to 7-membered non-aromatic heterocycle (where, one or two C1-4 alkyl groups or C2-4 alkenyl groups may be substituted on the ring)].
Type:
Grant
Filed:
June 15, 2018
Date of Patent:
December 6, 2022
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface of each of the particles; and an oxidation treatment step of oxidizing the gallium hydrate to form a shell including gallium oxide. The method includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a cooling step of cooling the particles to a solid state; and a pH treatment step of immersing the particles in an aqueous solution having a predetermined pH to form a shell including gallium hydrate.
Type:
Application
Filed:
August 27, 2020
Publication date:
December 1, 2022
Applicant:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: An object is to provide a composition and a method for eliminating undifferentiated pluripotent stem cells remaining in a cell group induced to differentiate from pluripotent stem cells. It has been found that while dihydroorotate dehydrogenase inhibitors exhibit cytotoxic activity against pluripotent stem cells, they do not exhibit significant cytotoxic activity against differentiated cells such as somatic stem cells.
Type:
Application
Filed:
December 19, 2019
Publication date:
November 17, 2022
Applicant:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
Abstract: A rare earth complex including a rare earth ion and a ligand coordinated with the rare earth ion and having a condensed polycyclic aromatic group.
Type:
Grant
Filed:
February 22, 2018
Date of Patent:
November 15, 2022
Assignee:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY