Patents by Inventor Nobuhiko Iki

Nobuhiko Iki 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).

  • Fluorescent material of cyclic phenol sulfide associated with metal and composition thereof
    Publication number: 20030189190
    Abstract: A fluorescent material comprising an associate of a cyclic phenol sulfide selected from thiacarixarene, sulfinylated thiacarixarene and sulfonylated thiacarixarene represented by formula (1): 1
    Type: Application
    Filed: April 14, 2003
    Publication date: October 9, 2003
    Inventors: Sotaro Miyano, Nobuhiko Iki, Harukio Takeya, Kazuo Takeya
  • Cyclic aniline sulfide and process for preparing the same
    Publication number: 20030060637
    Abstract: A cyclic phenol sulfide represented by the following formula: 1
    Type: Application
    Filed: September 11, 2002
    Publication date: March 27, 2003
    Inventors: Sotaro Miyano, Tetsutaro Hattori, Nobuhiko Iki, Naoya Morohashi, Hiroshi Katagiri, Haruhiko Takeya, Setsuko Miyanari, Toshihiro Kobori
  • 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
  • Composition for extracting transition metal and method for extracting transition metal using the same
    Patent number: 5881358
    Abstract: A composition for extracting a transition metal which comprises as an active ingredient a cyclic phenol sulfide represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom, a hydrocarbon group, an acyl group, a carboxyalkyl group, or a carbamoylalkyl group; Y represents a hydrocarbon group; Z represents a sulfide group, a sulfinyl group, or a sulfonyl group; and n is an integer of 4 to 8; and a method for extracting a transition metal using the composition
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: March 9, 1999
    Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.
    Inventors: Sotaro Miyano, Nobuhiko Iki, Fumitaka Narumi, Naoya Morohashi, Hitoshi Kumagai