Patents by Inventor Maaz S. Ahmed

Maaz S. Ahmed 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).

  • Conversion of alcohols to carboxylic acids using heterogeneous palladium-based catalysts
    Patent number: 9957217
    Abstract: Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 1, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Shannon S. Stahl, Adam B. Powell, Thatcher W. Root, David S. Mannel, Maaz S. Ahmed
  • CONVERSION OF ALCOHOLS TO CARBOXYLIC ACIDS USING HETEROGENEOUS PALLADIUM-BASED CATALYSTS
    Publication number: 20170137362
    Abstract: Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 18, 2017
    Inventors: Shannon S. Stahl, Adam B. Powell, Thatcher W. Root, David S. Mannel, Maaz S. Ahmed
  • Conversion of alcohols to alkyl esters and carboxylic acids using heterogeneous palladium-based catalysts
    Patent number: 9593064
    Abstract: Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: March 14, 2017
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Shannon S. Stahl, Adam B. Powell, Thatcher W. Root, David S. Mannel, Maaz S. Ahmed
  • Conversion Of Alcohols To Alkyl Esters And Carboxylic Acids Using Heterogeneous Palladium-Based Catalysts
    Publication number: 20150314272
    Abstract: Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 5, 2015
    Inventors: Shannon S. Stahl, Adam B. Powell, Thatcher W. Root, David S. Mannel, Maaz S. Ahmed