Patent holdings for IPC class H01J 21/20

Total number of patents in this class: 12

10-year publication summary

1
2
0
0
1
1
1
0
1
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Purdue Research Foundation
3561
2
British Telecommunications Public Limited Company
2606
1
Electronics and Telecommunications Research Institute
9319
1
Tokyo Electron Limited
12511
1
STMicroelectronics S.r.l.
3622
1
STMicroelectronics Pte Ltd.
79
1
Elbit Systems of America, LLC
187
1
Ocumetrics, Inc.
1
1
Oerlikon Surface Solutions AG, Pfaffikon
540
1
SELEX ES S.p.A.
42
1
SELEX Sistemi Integrati S.p.A.
33
1
Other owners 0