LK

Leonard Wai Fung Kho

NI Nikon: 28 patents #132 of 2,493Top 6%
Lam Research: 5 patents #568 of 2,128Top 30%
📍 San Francisco, CA: #897 of 26,999 inventorsTop 4%
🗺 California: #15,031 of 386,348 inventorsTop 4%
Overall (All Time): #104,860 of 4,157,543Top 3%
33
Patents All Time

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDate
12394608 Cleaning system for removing deposits from pump in an exhaust of a substrate processing system Krishna Birru, Gang Liu, Anand Chandrashekar, Gishun Hsu 2025-08-19
12227837 Ex situ coating of chamber components for semiconductor processing Damodar Rajaram Shanbhag, Guangbi Yuan, Thadeous Bamford, Curtis Bailey, Tony Kaushal +11 more 2025-02-18
12163219 Ex situ coating of chamber components for semiconductor processing Damodar Rajaram Shanbhag, Guangbi Yuan, Thadeous Bamford, Curtis Bailey, Tony Kaushal +11 more 2024-12-10
11365479 Ex situ coating of chamber components for semiconductor processing Damodar Rajaram Shanbhag, Guangbi Yuan, Thadeous Bamford, Curtis Bailey, Tony Kaushal +11 more 2022-06-21
10760158 Ex situ coating of chamber components for semiconductor processing Damodar Rajaram Shanbhag, Guangbi Yuan, Thadeous Bamford, Curtis Bailey, Tony Kaushal +11 more 2020-09-01
10203610 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2019-02-12
9817319 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2017-11-14
9547243 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2017-01-17
9329492 Apparatus and method to control vacuum at porous material using multiple porous materials Alex Ka Tim Poon, Derek Coon 2016-05-03
9285683 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2016-03-15
9217933 Apparatus and methods for keeping immersion fluid adjacent to an optical assembly during wafer exchange in an immersion lithography machine Alex Ka Tim Poon, Gaurav Keswani, Derek Coon, Daishi Tanaka 2015-12-22
9176394 Immersion lithography apparatus and method having movable liquid diverter between immersion liquid confinement member and substrate Alex Ka Tim Poon, Derek Coon, Gaurav Keswani, Daishi Tanaka 2015-11-03
8934080 Apparatus and methods for recovering fluid in immersion lithography Alex Ka Tim Poon, Derek Coon, Gaurav Keswani 2015-01-13
8896807 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2014-11-25
8780323 Apparatus and method for recovering liquid droplets in immersion lithography Alex Ka Tim Poon, Gaurav Keswani 2014-07-15
8743343 Apparatus and methods for keeping immersion fluid adjacent to an optical assembly during wafer exchange in an immersion lithography machine Alex Ka Tim Poon, Gaurav Keswani, Derek Coon, Daishi Tanaka 2014-06-03
8634055 Apparatus and method to control vacuum at porous material using multiple porous materials Alex Ka Tim Poon, Derek Coon, Gaurav Keswani 2014-01-21
8610873 Immersion lithography apparatus and method having movable liquid diverter between immersion liquid confinement member and substrate Alex Ka Tim Poon, Derek Coon, Gaurav Keswani, Daishi Tanaka 2013-12-17
8520187 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2013-08-27
8477284 Apparatus and method to control vacuum at porous material using multiple porous materials Alex Ka Tim Poon, Derek Coon 2013-07-02
8400610 Apparatus and methods for keeping immersion fluid adjacent to an optical assembly during wafer exchange in an immersion lithography machine Alex Ka Tim Poon, Gaurav Keswani, Derek Coon, Daishi Tanak 2013-03-19
8289497 Apparatus and methods for recovering fluid in immersion lithography Alex Ka Tim Poon, Derek Coon, Gaurav Keswani 2012-10-16
8237911 Apparatus and methods for keeping immersion fluid adjacent to an optical assembly during wafer exchange in an immersion lithography machine Alex Ka Tim Poon, Gaurav Keswani, Derek Coon 2012-08-07
8068209 Nozzle to help reduce the escape of immersion liquid from an immersion lithography tool Alex Ka Tim Poon, Guarav Keswani, Derek Coon 2011-11-29
8054448 Apparatus and method for providing fluid for immersion lithography Alex Ka Tim Poon 2011-11-08