Patents by Inventor Chikao Nakayama

Chikao Nakayama 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: 20220125376
    Abstract: A sleep apnea syndrome determination apparatus includes a processing unit configured to, by using RRI data indicating a heart rate interval (R-R Interval: RRI) in a sleeping period of a subject, determine whether or not the subject has sleep apnea syndrome. The processing unit operates to generate a feature vector including a plurality of heart rate intervals that are consecutive in the sleeping period; calculate, from a value that is outputted as a result of inputting the feature vector to a recurrent neural network and that is obtained for each identification target period that corresponds to the plurality of heart rate intervals included in the feature vector inputted, an index based on a ratio between a period of an apnea state and a period of a normal respiration state in the sleeping period; and determine whether the subject has sleep apnea syndrome, on the basis of the index.
    Type: Application
    Filed: January 9, 2020
    Publication date: April 28, 2022
    Applicant: KYOTO UNIVERSITY
    Inventors: Koichi FUJIWARA, Chikao NAKAYAMA, Ayako IWASAKI
  • Patent number: 6800607
    Abstract: Modified BDNF having improved pharmacological activities, pharmacokinetics and physical properties can be obtained by modifying BDNF with a 1-acyl-glycerol derivative. This BDNF being modified with a 1-acyl-glycerol derivative of the present invention has more efficacious and more excellent pharmacokinetic properties with retaining the useful effects being characteristic to BDNF which are useful as remedies for neurodegenerative diseases and diabetes mellitus, and hence, it is particularly useful as a therapeutic agent for treatment of type 2 diabetes mellitus.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: October 5, 2004
    Assignee: LTT Bio-Pharma Co., Ltd.
    Inventors: Rie Igarashi, Yutaka Mizushima, Mutsuo Taiji, Chikao Nakayama, Hiroshi Noguchi
  • Publication number: 20030073631
    Abstract: Modified BDNF having improved pharmacological activities, pharmacokinetics and physical properties can be obtained by modifying BDNF with a 1-acyl-glycerol derivative. This BDNF being modified with a 1-acyl-glycerol derivative of the present invention has more efficacious and more excellent pharmacokinetic properties with retaining the useful effects being characteristic to BDNF which are useful as remedies for neurodegenerative diseases and diabetes mellitus, and hence, it is particularly useful as a therapeutic agent for treatment of type 2 diabetes mellitus.
    Type: Application
    Filed: August 29, 2002
    Publication date: April 17, 2003
    Inventors: Rie Igarashi, Yutaka Mizushima, Mutsuo Taiji, Chikao Nakayama, Hiroshi Noguchi
  • Patent number: 6472366
    Abstract: The present invention provides a therapeutic agent for treatment of diabetes and hyperlipemia, especially a therapeutic agent for treatment of type II diabetes mellitus, which comprises as the active ingredient a neurotrophic factor such as BDNF (brain-derived neurotrophic factor), ligands of trkB or trkC receptors, NGF, NT-3, NT-4/5, CNTF, GDNF, HGF, etc. Different from conventional oral hypoglycemic agents being mainly used in the treatment of type II diabetes mellitus, the agent of the present invention exhibit blood lipid regulating effects and body fat accumulation regulating effects, in addition to the blood glucose regulating effects. Thus, the agent of the present invention are novel, and can reduce the risk factors in diabetes accompanied by hyperlipemia or obesity, without using any other agent.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: October 29, 2002
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Michiko Kishino, Chikao Nakayama, Mutsuo Taiji, Junji Ichihara, Hiroshi Noguchi
  • Publication number: 20020122829
    Abstract: The present invention provides a therapeutic agent for treatment of diabetes and hyperlipemia, especially a therapeutic agent for treatment of type II diabetes mellitus, which comprises as the active ingredient a neurotrophic factor such as BDNF (brain-derived neurotrophic factor), ligands of trkB or trkC receptors, NGF, NT-3, NT-4/5, CNTF, GDNF, HGF, etc. Different from conventional oral hypoglycemic agents being mainly used in the treatment of type II diabetes mellitus, the agent of the present invention exhibit blood lipid regulating effects and body fat accumulation regulating effects, in addition to the blood glucose regulating effects. Thus, the agent of the present invention are novel, and can reduce the risk factors in diabetes accompanied by hyperlipemia or obesity, without using any other agent.
    Type: Application
    Filed: January 25, 2002
    Publication date: September 5, 2002
    Applicant: Sumitomo Pharmaceuticals Co., Limited
    Inventors: Michiko Kishino, Chikao Nakayama, Mutsuo Taiji, Junji Ichihara, Hiroshi Noguchi
  • Patent number: 6391312
    Abstract: The present invention provides a therapeutic agent for treatment of diabetes and hyperlipemia, especially a therapeutic agent for treatment of type II diabetes mellitus, which comprises as the active ingredient a neurotrophic factor such as BDNF (brain-derived neurotrophic factor), ligands of trkB or trkC receptors, NGF, NT-3, NT-4/5, CNTF, GDNF, HGF, etc. Different from conventional oral hypoglycemic agents being mainly used in the treatment of type II diabetes mellitus, the agent of the present invention exhibit blood lipid regulating effects and body fat accumulation regulating effects, in addition to the blood glucose regulating effects. Thus, the agent of the present invention are novel, and can reduce the risk factors in diabetes accompanied by hyperlipemia or obesity, without using any other agent.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 21, 2002
    Assignee: Sumitomo Pharmaceuticals Co., Limited
    Inventors: Michiko Kishino, Chikao Nakayama, Mutsuo Taiji, Junji Ichihara, Hiroshi Noguchi
  • Patent number: 5939534
    Abstract: Human ciliary neurotrophic factor (human CNTF) mutants, in which at least the amino acid residue corresponding to position 153 of wild type human CNTF has been substituted with another amino acid residue in the amino acid sequence encoding human CNTF, exhibit an activity comparable or superior to that of wild type human CNTF. It is therefore expected that the human CNTF mutants would be effective as drugs with improved side effects such as reduction in appearance of an autoantibody, loss of body weight, anorexia, a dry cough, fatigue, etc.In cytokines having sequence similarity to human CNTF and abundant .alpha. helices (GH, PRL, EPO, G- CSF, LIF, IL-6, IL-2, IL-4, GM-CSF), there are further provided mutants in the D1 cap region.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: August 17, 1999
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Makoto Inoue, Kaoru Kikuchi, Yoko Ishige, Akira Ito, Toru Kimura, Chikao Nakayama, Hiroshi Noguchi