LK

Leo Keller

OA Optrel Holding Ag: 5 patents #1 of 38Top 3%
Overall (All Time): #831,214 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10736782 Face protector Ramon Hofer Kraner, Daniel Iranyi, Arno Lenzi, Tom Stäubli, Uwe Werner 2020-08-11
10098788 Electro-optical glare-protection filter with a liquid crystal cell being a fringe-field switching cell for a welder protection device Martin ESPOSITO 2018-10-16
9610198 Protection device for a welder Ramon Hofer-Kraner 2017-04-04
9268455 System and method for user-controlled, multi-dimensional navigation and/or subject-based aggregation and/or monitoring of multimedia data Francois Rüf 2016-02-23
6675800 Emergency flight safety device 2004-01-13
6270223 Active electro-optical filter device and glare-protection device Franco Del Bon, Phillip Syre 2001-08-07