AP

Ashwin M. Purohit

AT Axcelis Technologies: 15 patents #15 of 300Top 5%
Overall (All Time): #297,274 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9558980 Vapor compression refrigeration chuck for ion implanters William Davis Lee, Marvin R. LaFontaine 2017-01-31
9281227 Multi-resistivity Johnsen-Rahbek electrostatic clamp William D. Lee 2016-03-08
9048276 Matched coefficient of thermal expansion for an electrostatic chuck William D. Lee 2015-06-02
9036326 Gas bearing electrostatic chuck William D. Lee, Marvin R. LaFontaine, Joseph Gillespie, Donovan Beckel, Teng-Chao David Tao +2 more 2015-05-19
8941968 Heated electrostatic chuck including mechanical clamp capability at high temperature Perry J. I. Justesen, Allan D. Weed, William Davis Lee, Robert D. Rathmell, Gary Cook 2015-01-27
8902560 Electrostatic chuck ground punch David B. Smith, William D. Lee, Marvin R. LaFontaine 2014-12-02
8797706 Heated annulus chuck William Davis Lee, Gary Cook, Perry J. I. Justesen, Robert D. Rathmell, Allan D. Weed 2014-08-05
8422193 Annulus clamping and backside gas cooled electrostatic chuck Teng-Chao David Tao, William D. Lee, Marvin R. LaFontaine 2013-04-16
8270142 De-clamping wafers from an electrostatic chuck William D. Lee, Marvin R. LaFontaine, Richard J. Rzeszut 2012-09-18
8241425 Non-condensing thermos chuck William D. Lee, Marvin R. LaFontaine 2012-08-14
8228658 Variable frequency electrostatic clamping 2012-07-24
8023247 Electrostatic chuck with compliant coat Marvin R. LaFontaine, William D. Lee, Richard J. Rzeszut 2011-09-20
7952851 Wafer grounding method for electrostatic clamps Marvin R. LaFontaine, Ari Eiriksson, William D. Lee 2011-05-31
7751172 Sliding wafer release gripper/wafer peeling gripper Dale K. Stone, Dave Broyer, Steve Drummond 2010-07-06
7560705 Workpiece handling scan arm for ion implantation system Ari Eiriksson, Donovan Beckel, Robert J. Mitchell, Michel Pharand, Marvin R. LaFontaine +4 more 2009-07-14
7385799 Offset phase operation on a multiphase AC electrostatic clamp 2008-06-10