Patents by Inventor James A. Lech

James A. Lech 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).

  • Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers
    Patent number: 7087654
    Abstract: The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100° C., and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: August 8, 2006
    Assignee: Ionics, Incorporated
    Inventors: Russell J. MacDonald, James A. Lech
  • Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers
    Publication number: 20030036574
    Abstract: The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100° C., and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.
    Type: Application
    Filed: June 24, 2002
    Publication date: February 20, 2003
    Inventors: Russell J. MacDonald, James A. Lech
  • Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers
    Patent number: 6410672
    Abstract: The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100° C., and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: June 25, 2002
    Assignee: Ionics, Incorporated
    Inventors: Russell J. MacDonald, James A. Lech