Patents Assigned to Seikagaku Corporation
  • Patent number: 11959109
    Abstract: A horseshoe crab Factor C protein having activity of Factor C, wherein the horseshoe crab is selected from Tachypleus tridentatus, Limulus polyphemus, and Carcinoscorpius rotundicauda, and wherein the horseshoe crab Factor C protein is produced through being recombinantly expressed from a Chinese Hamster Ovary (CHO) DG44 cell or HEK cell.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: April 16, 2024
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Hikaru Mizumura, Toshio Oda, Shun-ichiro Kawabata
  • Patent number: 11944670
    Abstract: The present invention provides a therapeutic agent for disc herniation, which has extremely few adverse side effects, can achieve a prolonged pain-ameliorating effect when administered in only a single dose, and can exhibit a high therapeutic effect and high safety in clinical applications. The present invention relates to a therapeutic agent for disc herniation, which is characterized by containing chondroitinase ABC as an active ingredient and being administered in such a manner that the ingredient can be administered into a human disk in an amount of 1-8 units per disk.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: April 2, 2024
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Taiichi Sirogane, Takao Murayama, Masafumi Yaguchi
  • Publication number: 20230357742
    Abstract: A horseshoe crab Factor C protein having activity of Factor C, wherein the horseshoe crab is selected from Tachypleus tridentatus, Limulus polyphemus, and Carcinoscorpius rotundicauda, and wherein the horseshoe crab Factor C protein is produced through being recombinantly expressed from a Chinese Hamster Ovary (CHO) DG44 cell or HEK cell.
    Type: Application
    Filed: July 3, 2023
    Publication date: November 9, 2023
    Applicant: Seikagaku Corporation
    Inventors: Hikaru MIZUMURA, Toshio Oda, Shun-Ichiro Kawabata
  • Patent number: 11779593
    Abstract: Provided is an agent for improving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: October 10, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Patent number: 11744899
    Abstract: Provided is a method for suppressing the generation of diclofenac lactam from a compound represented by a formula (1) in the description, including allowing the compound of the formula (1) and a component (A) that is at least one type of compound selected from the group consisting of a nonionic surfactant, a hydroxyalkylated cyclodextrin, a C1 to C3 mono-alcohol, a C2 to C3 di-alcohol, a C3 to C6 tri-alcohol, a polyalkylene glycol, a ?-lactone, polyvinylpyrrolidone, a chlorogenic acid, and an alkyl sulfate ester, and salts thereof to coexist. A method for producing a pharmaceutical composition containing a compound represented by the formula (1) and a component (A), and a pharmaceutical composition which is a product produced thereby are also provided.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: September 5, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Chiaki Takahata, Naoya Yamashita, Naoko Kunii, Hirotaka Hoshi
  • Patent number: 11738040
    Abstract: The present invention pertains to a composition for treating joint diseases and a kit including the same, and the purpose of the present invention is to provide a composition for treating joint diseases which can be used in patients with joint diseases, and a kit which includes the same. The present invention minimizes the burden on patients with chronic joint diseases while also achieving excellent medicinal effects by means of a composition for treating joint diseases which includes a modified hyaluronic acid having a group derived from an anti-inflammatory compound or a pharmaceutically acceptable salt of the modified hyaluronic acid, and which is used by being administered to patients with human joint diseases as a single injection per period of four or more weeks.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: August 29, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Kazuyuki Kano, Yuji Nobuoka, Takayuki Seo
  • Publication number: 20230263871
    Abstract: A pharmaceutical composition containing a lyophilized saccharide-degrading enzyme having excellent titer, and a package containing the pharmaceutical composition. The pharmaceutical composition is a unit dose formulation containing a lyophilized saccharide-degrading enzyme with a titer of not less than 0.3 unit/?g as an active ingredient, and contains the saccharide-degrading enzyme in an amount of not less than 2 ?g and not more than 6 ?g.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 24, 2023
    Applicant: SEIKAGAKU CORPORATION
    Inventor: Mine HIGUCHI
  • Publication number: 20230193349
    Abstract: Provided is a technology related to a horseshoe crab factor B variant, and also provided is means for performing endotoxin measurement with high sensitivity. A polypeptide having an amino acid sequence in which the amino acid residue at the 193-position in an amino acid sequence of a polypeptide of horseshoe crab factor B is substituted with a cysteine (Cys) residue, is produced. Endotoxin measurement can be carried out with high sensitivity by configuring a Limulus reagent by combining this polypeptide with horseshoe crab factor C.
    Type: Application
    Filed: October 11, 2022
    Publication date: June 22, 2023
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Yuki KOBAYASHI, Hikaru MIZUMURA, Toshio ODA, Shun-ichiro KAWABATA
  • Patent number: 11648299
    Abstract: There are provided a pharmaceutical composition containing a lyophilized saccharide-degrading enzyme having excellent titer, and a package containing the pharmaceutical composition. The pharmaceutical composition is a unit dose formulation containing a lyophilized saccharide-degrading enzyme with a titer of not less than 0.3 unit/?g as an active ingredient, and containing the saccharide-degrading enzyme in an amount of not less than 2 ?g and not more than 8 ?g.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: May 16, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventor: Mine Higuchi
  • Publication number: 20230136938
    Abstract: An object of the present invention is to find a useful means for removing an intraocular membrane. The present invention relates to an agent for use in intraocular membrane peeling surgery, which contains a solution containing a hydrogel-forming material and satisfies the following formula 1 with respect to the dynamic viscoelasticity measured at a temperature of 25 to 40° C. and a frequency of 1 Hz. 0<Vmax?3??(Formula 1) Provided that in the formula 1, Vmax (Pa/sec) is the maximum change rate of the storage elastic modulus after the initiation of gelation.
    Type: Application
    Filed: March 24, 2021
    Publication date: May 4, 2023
    Applicants: FUKUOKA UNIVERSITY, SEIKAGAKU CORPORATION
    Inventors: Toshio HISATOMI, Kiyoshi SUZUKI
  • Publication number: 20220370630
    Abstract: As a system that enables effective delivery of a pharmaceutical active ingredient to a submucosal tissue of the bladder, a transmucosal delivery system including a conjugate of a hydrophobic compound containing the pharmaceutical active ingredient and chondroitin sulfate is provided.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 24, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Muneto NARITA, Kensuke ISHII, Akihito SHIMURA
  • Patent number: 11499177
    Abstract: Provided is a technology related to a horseshoe crab factor B variant, and also provided is means for performing endotoxin measurement with high sensitivity. A polypeptide having an amino acid sequence in which the amino acid residue at the 193-position in an amino acid sequence of a polypeptide of horseshoe crab factor B is substituted with a cysteine (Cys) residue, is produced. Endotoxin measurement can be carried out with high sensitivity by configuring a Limulus reagent by combining this polypeptide with horseshoe crab factor C.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: November 15, 2022
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Yuki Kobayashi, Hikaru Mizumura, Toshio Oda, Shun-Ichiro Kawabata
  • Publication number: 20220296634
    Abstract: The present invention relates to an aqueous composition which comprises chondroitin sulfate, hyaluronic acid, and a pharmaceutically acceptable carrier, and which can be stored at room temperature. The present invention also relates to an aqueous composition which comprises chondroitin sulfate, hyaluronic acid, sorbitol, and a pharmaceutical acceptable carrier.
    Type: Application
    Filed: June 7, 2022
    Publication date: September 22, 2022
    Applicant: Seikagaku Corporation
    Inventors: Eiji NOGAMI, Akira KOUSHINBOU, Noriko OSHIMA, Kota FUJIWARA, Tomoya SATO
  • Publication number: 20220257781
    Abstract: Provided is a compound as a compound obtained by conjugating a tertiary amine compound or an imine compound, which is useful as a drug, with a polymer, in which a structure D+ forming a quaternary ammonium salt or an iminium salt from D, a tertiary amine compound or an imine compound and a polymer residue Poly having a carboxy group are bonded to each other via a structure —C(R1)(R2)OC(?O)YANHC(?O)—.
    Type: Application
    Filed: September 5, 2019
    Publication date: August 18, 2022
    Applicant: Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Kenichi Namatsu
  • Publication number: 20220145280
    Abstract: A horseshoe crab Factor C protein having activity of Factor C, wherein the horseshoe crab is selected from Tachypleus tridentatus, Limulus polyphemus, and Carcinoscorpius rotundicauda, and wherein the horseshoe crab Factor C protein is produced through being recombinantly expressed from a Chinese Hamster Ovary (CHO) DG44 cell or HEK cell.
    Type: Application
    Filed: December 17, 2021
    Publication date: May 12, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Hikaru MIZUMURA, Toshio ODA, Shun-ichiro KAWABATA
  • Publication number: 20220133776
    Abstract: Provided are a composition comprising a GAG derivative and a chemokine receptor activity regulator, and a pharmaceutical composition comprising said composition.
    Type: Application
    Filed: January 13, 2022
    Publication date: May 5, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Tomochika KISUKEDA, Yasuhiro GOTO, Yuichi CHIKARAISHI, Takahiro HATANAKA
  • Publication number: 20220105125
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 7, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi YAMADA, Chiyo SAKENAGA, Keiichiro ARAI, Kazutaka YAMAMOTO
  • Publication number: 20220105028
    Abstract: A submucosal injection material whose quality deterioration during a storage period is prevented is provided. It is a submucosal injection material, which contains hyaluronic acid, and to which a dye is added.
    Type: Application
    Filed: February 21, 2020
    Publication date: April 7, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventor: Iwao YAMAGUCHI
  • Publication number: 20220096532
    Abstract: The present invention pertains to a composition for treating joint diseases and a kit including the same, and the purpose of the present invention is to provide a composition for treating joint diseases which can be used in patients with joint diseases, and a kit which includes the same. The present invention minimizes the burden on patients with chronic joint diseases while also achieving excellent medicinal effects by means of a composition for treating joint diseases which includes a modified hyaluronic acid having a group derived from an anti-inflammatory compound or a pharmaceutically acceptable salt of the modified hyaluronic acid, and which is used by being administered to patients with human joint diseases as a single injection per period of four or more weeks.
    Type: Application
    Filed: December 13, 2021
    Publication date: March 31, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Kazuyuki KANO, Yuji NOBUOKA, Takayuki SEO
  • Patent number: 11266725
    Abstract: The present invention provides a therapeutic agent for disc herniation, which has extremely few adverse side effects, can achieve a prolonged pain-ameliorating effect when administered in only a single dose, and can exhibit a high therapeutic effect and high safety in clinical applications. The present invention relates to a therapeutic agent for disc herniation, which is characterized by containing chondroitinase ABC as an active ingredient and being administered in such a manner that the ingredient can be administered into a human disk in an amount of 1-8 units per disk.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: March 8, 2022
    Assignee: Seikagaku Corporation
    Inventors: Taiichi Sirogane, Takao Murayama, Masafumi Yaguchi