1985-87

Research Associate and Postdoctoral Fellow, Rensselaer Polytechnic Institute

1987-91

Assistant Professor of Polymer Science, The University of Akron

1991-95

Associate Professor of Polymer Science, The University of Akron

1995-98

Professor of Polymer Science, The University of Akron

1998-

Trustees Professor of Polymer Science, The University of Akron

2001-05

Chairman, Department of Polymer Science, The University of Akron 

2001-

Robert C. Musson Trustees Professor of Polymer Science, The University of Akron  

2007-

Dean, College of Polymer Science and Polymer Engineering, The University of Akron