Patents by Inventor Mitsuharu Hasegawa

Mitsuharu Hasegawa 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).

  • SULFONATED DERIVATIVES OF CYCLIC PHENOL SULFIDES, PROCESS FOR THE PREPARATION THEREOF, SEPARATING AND RECOVERING AGENTS CONTAINING CYCLIC PHENOL SULFIDES, METHODS FOR SEPARATION AND RECOVERY THEREWITH, AND DRUG COMPOSITIONS CONTAINING THE SULFIDES
    Patent number: 6355671
    Abstract: A sulfonic acid compound of a cyclic phenol sulfide represented by formula (1): (wherein X represents a hydrogen atom, a hydrocarbon group, or an acyl group; M represents a hydrogen atom, an alkyl group, a metal, ammonium, (lower-alkyl)ammonium, (lower-alkanol)ammonium, a nitrogen-containing heterocyclic group, or an amino acid residue; Z represents Sm, SO, or SO2; m is an integer of from 1 to 7; and n is an integer of from 4 to 12, with the proviso that the plural X's, M's and Z's are each the same or different, and at least one of the plural M's is neither a hydrogen atom nor an alkyl group), or a salt thereof; a composition for separating and recovering an organic halogen compound or a monocyclic aromatic compound, comprising a cyclic phenol sulfide or a salt thereof, and a carrier; and a pharmaceutical composition a cyclic phenol sulfide or a pharmaceutically acceptable salt, and a carrier.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: March 12, 2002
    Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.
    Inventors: Sotaro Miyano, Nobuhiko Iki, Toyohisa Fujimoto, Fumio Hamada, Shingo Kato, Yoshiyuki Hiraishi, Hitoshi Kumagai, Mitsuharu Hasegawa, Setsuko Miyanari, Yoshihiro Sugawa, Masahiro Ishizuka
  • Cyclic phenol sulfide and process for producing the same
    Patent number: 5824808
    Abstract: A cyclic phenol sulfide represented by the following formula (1) is described: ##STR1## wherein X represents a hydrogen atom, a hydrocarbon group, or an acyl group; Y.sub.1 represents a hydrogen atom, a hydrocarbon group, a halogenated hydrocarbon group, --COR.sup.1, --OR.sup.2, --COOR.sup.3, --CN, --CONH.sub.2, --NO.sub.2, --NR.sup.4 R.sup.5, a halogen atom, --SO.sub.4 R.sup.6, or --SO.sub.3 R.sup.7, in which R.sup.11, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7 each represents a hydrogen atom or a hydrocarbon group; n is an integer of 3 or more; and m is an integer of 1 to 7, provided that the plural m's of the S.sub.m 's are the same or different; the plural X's are the same or different; and the plural Y.sub.1 's are the same or different. A process for producing the cyclic phenol sulfide is also described.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: October 20, 1998
    Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.
    Inventors: Takashi Hori, Hitoshi Kumagai, Mitsuharu Hasegawa, Yoko Sato, Hiroshi Munakata, Yoshihiro Sugawa