Fibrous materials and fiber reinforced composites. Processing of fibrous materials. Plastics materials. Product design, performance and analysis of failure. Filtration and design of respiratory protective devices. Design of automated assembly systems. Analysis, measurement and optimization of aerodynamic drag forces. Thermoforming. Extrusion. Fluid transfer through porous media. Patent law (Preparation and Prosecution of Patent Applications. Validity, Infringement and Enforceability of Patents). Authored numerous technical and law articles and 36 U.S. patents. Dr. Tayebi is a Commonwealth of Massachusetts attorney and a patent attorney (United States Patent and Trademark Office). He also received Outstanding Teacher Award, (Georgia Institute of Technology, Atlanta, GA, 1976), Teaching Excellence Awards, (University of Massachusetts, Lowell, 2000, 2002, 2005 and 2008), and Exceeding Expectations Award, (U Mass Lowell Student Government, 2004).