Patents by Inventor Noriaki Seko

Noriaki Seko 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).

  • Collector of dissolved metal from sea water having an amidoxime group and a hydrophilic group, a method for production thereof, a collecting cassette comprising laminated collectors, and a method for absorbing and collecting dissolvedmetal from sea water by the cassette
    Publication number: 20030220033
    Abstract: A collector is disclosed that is made of a polyolefin fiber having amidoxime groups and that is capable of efficient adsorptive recovery of useful metals such as uranium, vanadium, cobalt and titanium which are dissolved in small quantities in seawater. In the presence of a polymerizable monomer having a hydrophilic group, a polymerizable monomer having a cyano group is grafted to a polyolefin fiber by radiation-initiated graft polymerization to form both a hydrophilic group and a cyano group in the same graft side chains, and the cyano groups in the graft side chains are reacted with hydroxylamine to be converted to amidoxime groups, thereby producing a collector capable of recovering dissolved metals from seawater.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 27, 2003
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Takanobu Sugo, Akio Katakai, Noriaki Seko
  • Collector of metals dissolved in sea water
    Patent number: 6586099
    Abstract: A collector is disclosed that is made of a polyolefin fiber having amidoxime groups and that is capable of efficient adsorptive recovery of useful metals such as uranium, vanadium, cobalt and titanium which are dissolved in small quantities in seawater. In the presence of a polymerizable monomer having a hydrophilic group, a polymerizable monomer having a cyano group is grafted to a polyolefin fiber by radiation-initiated graft polymerization to form both a hydrophilic group and a cyano group in the same graft side chains, and the cyano groups in the graft side chains are reacted with hydroxylamine to be converted to amidoxime groups, thereby producing a collector capable of recovering dissolved metals from seawater.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: July 1, 2003
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Takanobu Sugo, Akio Katakai, Noriaki Seko
  • Collector of dissolved metal from sea water having an amidoxime group and a hydrophilic group, a method for production thereof, a collecting cassette comprising laminated collectors, and a method for adsorbing and collecting dissolved metal from sea water by the cassette
    Publication number: 20020041936
    Abstract: A collector is disclosed that is made of a polyolefin fiber having amidoxime groups and that is capable of efficient adsorptive recovery of useful metals such as uranium, vanadium, cobalt and titanium which are dissolved in small quantities in seawater. In the presence of a polymerizable monomer having a hydrophilic group, a polymerizable monomer having a cyano group is grafted to a polyolefin fiber by radiation-initiated graft polymerization to form both a hydrophilic group and a cyano group in the same graft side chains, and the cyano groups in the graft side chains are reacted with hydroxylamine to be converted to amidoxime groups, thereby producing a collector capable of recovering dissolved metals from seawater.
    Type: Application
    Filed: October 24, 2001
    Publication date: April 11, 2002
    Inventors: Takanobu Sugo, Akio Katakai, Noriaki Seko
  • Collector of dissolved metal from sea water having an amidoxime group and a hydrophilic group, a method for production thereof
    Patent number: 6333078
    Abstract: A collector is disclosed that is made of a polyolefin fiber having amidoxime groups and that is capable of efficient adsorptive recovery of useful metals such as uranium, vanadium, cobalt and titanium which are dissolved in small quantities in seawater. In the presence of a polymerizable monomer having a hydrophilic group, a polymerizable monomer having a cyano group is grafted to a polyolefin fiber by radiation-initiated graft polymerization to form both a hydrophilic group and a cyano group in the same graft side chains, and the cyano groups in the graft side chains are reacted with hydroxylamine to be converted to amidoxime groups, thereby producing a collector capable of recovering dissolved metals from seawater.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: December 25, 2001
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Takanobu Sugo, Akio Katakai, Noriaki Seko