Patents by Inventor Michael E. Lees

Michael E. Lees 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).

  • Filtration process for purifying liquid azole heteroaromatic compound-containing mixtures
    Patent number: 9802905
    Abstract: A process for removing impurities from a liquid azole heteroaromatic compound-containing (e.g., triazole-containing) mixture by: (a) providing a liquid azole heteroaromatic compound-containing mixture having impurities; and (b) passing the azole heteroaromatic compound-containing mixture through at least one filtration membrane which is a nanofiltration membrane and/or ultrafiltration membrane having a molecular pore size in the range of from about 200 daltons to about 1 kilodaltons to provide a permeate that is an at least partially purified azole heteroaromatic compound-containing mixture and a retentate with at least some impurities.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 31, 2017
    Assignee: Wincom, Inc.
    Inventors: Peter F. Vogt, James E. Milawski, Michael E. Lees, Alexander J. Wessel
  • FILTRATION PROCESS FOR PURIFYING LIQUID AZOLE HETEROAROMATIC COMPOUND-CONTAINING MIXTURES
    Publication number: 20160200694
    Abstract: A process for removing impurities from a liquid azole heteroaromatic compound-containing (e.g., triazole-containing) mixture by: (a) providing a liquid azole heteroaromatic compound-containing mixture having impurities; and (b) passing the azole heteroaromatic compound-containing mixture through at least one filtration membrane which is a nanofiltration membrane and/or ultrafiltration membrane having a molecular pore size in the range of from about 200 daltons to about 1 kilodaltons to provide a permeate that is an at least partially purified azole heteroaromatic compound-containing mixture and a retentate with at least some impurities.
    Type: Application
    Filed: March 23, 2016
    Publication date: July 14, 2016
    Applicant: Wincom, Inc.
    Inventors: Peter F. Vogt, James E. Milawski, Michael E. Lees, Alexander J. Wessel
  • Filtration process for purifying liquid azole heteroaromatic compound-containing mixtures
    Patent number: 9309205
    Abstract: A process for removing impurities from a liquid azole heteroaromatic compound-containing (e.g., triazole-containing) mixture by: (a) providing a liquid azole heteroaromatic compound-containing mixture having impurities; and (b) passing the azole heteroaromatic compound-containing mixture through at least one filtration membrane which is a nanofiltration membrane and/or ultrafiltration membrane having a molecular pore size in the range of from about 200 daltons to about 1 kilodaltons to provide a permeate that is an at least partially purified azole heteroaromatic compound-containing mixture and a retentate with at least some impurities.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: April 12, 2016
    Assignee: Wincom, Inc.
    Inventors: Peter F. Vogt, James E. Milawski, Michael E. Lees, Alexander J. Wessel
  • FILTRATION PROCESS FOR PURIFYING LIQUID AZOLE HETEROAROMATIC COMPOUND-CONTAINING MIXTURES
    Publication number: 20150119578
    Abstract: A process for removing impurities from a liquid azole heteroaromatic compound-containing (e.g., triazole-containing) mixture by: (a) providing a liquid azole heteroaromatic compound-containing mixture having impurities; and (b) passing the azole heteroaromatic compound-containing mixture through at least one filtration membrane which is a nanofiltration membrane and/or ultrafiltration membrane having a molecular pore size in the range of from about 200 daltons to about 1 kilodaltons to provide a permeate that is an at least partially purified azole heteroaromatic compound-containing mixture and a retentate with at least some impurities.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 30, 2015
    Applicant: Wincom, Inc.
    Inventors: Peter F. Vogt, James E. Milawski, Michael E. Lees, Alexander J. Wessel