- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 33/00 - Discharge tubes with provision for emergence of electrons or ions from the vesselLenard tubes
Patent holdings for IPC class H01J 33/00
Total number of patents in this class: 63
10-year publication summary
3
|
0
|
4
|
1
|
0
|
2
|
0
|
0
|
1
|
0
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Tetra Laval Holdings & Finance S.A. | 2137 |
6 |
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6112 |
5 |
Buhler AG | 530 |
3 |
Hitachi Zosen Corporation | 619 |
3 |
HS Foils Oy | 10 |
3 |
Schlumberger Technology Corporation | 10691 |
2 |
Schlumberger Canada Limited | 7290 |
2 |
Schlumberger Technology B.v. | 5166 |
2 |
Schlumberger Holdings Limited | 2833 |
2 |
The Board of Trustees of the Leland Stanford Junior University | 6403 |
2 |
citizen Watch Co., Ltd. | 1076 |
2 |
Prad Research and Development Limited | 2693 |
2 |
Services Petroliers Schlumberger | 5782 |
2 |
The University of British Columbia | 1497 |
2 |
Modern Hydrogen, Inc. | 33 |
2 |
Samsung Electronics Co., Ltd. | 145630 |
1 |
Samsung Display Co., Ltd. | 34595 |
1 |
LG Electronics Inc. | 72890 |
1 |
Canon Inc. | 39765 |
1 |
Sharp Corporation | 10313 |
1 |
Other owners | 18 |