In Japan
  • 1. Prem Pal and Kazuo Sato, "Fabrication methods for Silicon Microstructures" (filed on 23rd July 2009, patent application no. 2009-172553).
  • 2. Prem Pal and Kazuo Sato, "Method of Fabricating Suspended Silicon Microstructures and Microfluidic Channels" (filed on 8th Dec. 2008, patent application no. 2008-312338).
  • In India
  • 3. Prem Pal and Sudhir Chandra, "Fabrication Method of Microstructures with Perfect Convex Corners" (filed on March 18 2004, Indian patent application no. 508/DEL/2004)
  • 4. Prem Pal, Sudhir Chandra and Suneet Tuli, "Microelectromechanical Device with Recessed Micromechanical Structure, and Fabrication Method Thereof" (filed on 13th Jan. 2003, patent application no. 39/DEL/2003).