Patents by Inventor Takashi Sasagawa

Takashi Sasagawa 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: 11933673
    Abstract: A heat source detection device is a heat source detection device that detects a heat source on the earth using observation data of a radiometer provided in a geostationary satellite and includes: a calculation unit that calculates a heat source proportion value indicating a proportion of a wavelength distribution due to the heat source included in the observation data to the observation data by curve fitting using Planck's law; and a determination unit that determines presence or absence of the heat source according to the heat source proportion value calculated by the calculation unit.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: March 19, 2024
    Assignee: IHI Corporation
    Inventors: Chiharu Sasagawa, Takashi Ogai
  • Publication number: 20150205896
    Abstract: For each (ij)-th tensor component, an equation ?F1(ij) using ?1 is computed based on a function W(F) of an inputted tensor amount F and a value (F=F?) of F. For each (kl)-th tensor component, an equation ˜?F2(kl) using ?1 and ?2 is computed based on the value (F=F?) of F. For each combination of an (ij)-th and a (kl)-th component, a function W(F?+?F1(ij)+˜?F2(kl)) is computed using the computed equations ?F1(ij) and ˜?F2(kl). For each (ij)-th component, a coefficient of ?1 in the function W(F?+?F1(ij)+˜?F2(kl)) is removed, and stress, based on a first order derivative with respect to the amount F of the function W(F), is computed. For each combination of an (ij)-th and a (kl)-th component, a coefficient of ?1·?2 in the function W(F?+?F1(ij)+˜?F2(kl)) is removed, and a material Jacobian, based on a second order derivative with respect to the amount F of the function W(F), is computed.
    Type: Application
    Filed: September 6, 2013
    Publication date: July 23, 2015
    Applicant: UNIVERSITY OF THE RYUKYUS
    Inventors: Masato Tanaka, Ryuji Omote, Takashi Sasagawa, Masaki Fujikawa
  • Patent number: 5210266
    Abstract: Novel N-substituted mercaptopropanamide derivatives of the formula: ##STR1## wherein R.sub.1 is mercapto or a group convertible into mercapto when cleaved within the biobody, W is hydrogen atom, an alkyl or an aralkyl, R.sub.2 is an aryl which may optionally have substituent(s), a heterocyclic group which may optionally have substituent(s), or an alkyl which may optionally have substituent(s), X is a cycloalkylene, a cycloalkylidene, or a phenylene which may optionally have substituent(s) or may optionally be fused with other ring, and R.sub.3 is carboxyl or a group convertible into carboxyl when cleaved within the biobody, or a pharmaceutically acceptable salt thereof, and a solid solution of said N-substituted mercaptopropanamide derivative with an amino acid, which have excellent enkephalinase inhibitory activity and are useful for the treatment of mild to moderate pain, and a pharmaceutical composition containing said compounds as an active ingredient, and processes for preparing these compounds.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: May 11, 1993
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Tetsutaro Mimura, Yasuhisa Nakamura, Junko Nishino, Tadahiro Sawayama, Takashi Sasagawa, Takashi Deguchi, Hideo Nakamura
  • Patent number: 5179125
    Abstract: Novel N-substituted mercaptopropanamide derivatives of the formula: ##STR1## wherein R.sub.1 is mercapto or a group convertible into mercapto when cleaved within the biobody, W is hydrogen atom, an alkyl or an aralkyl, R.sub.2 is an aryl which may optionally have substituent(s), a heterocyclic group which may optionally have substituent(s), or an alkyl which may optionally have substituent(s), X is a cycloalkylene, a cycloalkylidene, or a phenylene which may optionally have substituent(s) or may optionally be fused with other ring, and R.sub.3 is carboxyl or a group convertible into carboxyl when cleaved within the biobody, or a pharmaceutically acceptable salt thereof, and a solid solution of said N-substituted mercaptopropanamide derivative with an amino acid, which have excellent enkephalinase inhibitory activity and are useful for the treatment of mild to moderate pain, and a pharmaceutical composition containing said compounds as an active ingredient, and processes for preparing these compounds.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: January 12, 1993
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Tetsutaro Mimura, Yasuhisa Nakamura, Junko Nishino, Tadahiro Sawayama, Takashi Sasagawa, Takashi Deguchi, Hideo Nakamura
  • Patent number: 4826814
    Abstract: There are provided tripeptide compounds represented by the following formula ##STR1## wherein R.sub.1 represents a C.sub.1-10 alkyl group, a C.sub.4-7 cycloalkyl or C.sub.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: May 2, 1989
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Tadahiro Sawayama, Masatoshi Tsukamoto, Takashi Sasagawa, Kazuya Nishimura, Kanoo Hosoki, Kunihiko Takeyama
  • Patent number: 4299945
    Abstract: Thermoplastic polyamide imide copolymers are provided which are excellent in both heat stability and melt viscosity characteristics at a temperature of from about 300.degree. C. to about 400.degree. C., and method of preparation.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: November 10, 1981
    Assignee: Toray Industries, Inc.
    Inventors: Toshihiko Aya, Takashi Sasagawa, Sho Kadoi