Inventor
RITCHEY JOSHUA A
US6 patents
⚠️ This page may combine multiple inventors who share the name “RITCHEY JOSHUA A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
E INK CORP
4 patentsUS9953588B1Apr 24, 2018
Nano-particle based variable transmission devices
E INK CORP11 citations83
US10233339B2Mar 19, 2019
Electrophoretic medium comprising a mixture of charge control agents
E INK CORP9 citations82
US10040954B2Aug 7, 2018
Electrophoretic medium comprising a mixture of charge control agents
E INK CORP13 citations82
US10796649B2Oct 6, 2020
Nano-particle based variable transmission devices
E INK CORP0 citations51