- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 49/42 - Stability-of-path spectrometers, e.g. monopole, quadrupole, multipole, farvitrons
Patent holdings for IPC class H01J 49/42
Total number of patents in this class: 1904
10-year publication summary
|
132
|
125
|
121
|
136
|
162
|
134
|
153
|
113
|
133
|
78
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shimadzu Corporation | 6187 |
271 |
| Micromass UK Limited | 1117 |
228 |
| Thermo Finnigan LLC | 637 |
186 |
| DH Technologies Development Pte. Ltd. | 1119 |
161 |
| Thermo Fisher Scientific (Bremen) GmbH | 589 |
143 |
| The Trustees of Indiana University | 745 |
53 |
| Hitachi High-Tech Corporation | 5351 |
47 |
| Purdue Research Foundation | 3646 |
45 |
| Bruker Daltonics GmbH & Co. KG | 442 |
37 |
| Agilent Technologies, Inc. | 2637 |
26 |
| Leco Corporation | 202 |
25 |
| Hitachi High-Technologies Corporation | 2002 |
21 |
| Atonarp Inc | 115 |
19 |
| Bruker Scientific LLC | 78 |
15 |
| Quantinuum LLC | 238 |
15 |
| Battelle Memorial Institute | 2491 |
13 |
| Infineon Technologies Austria AG | 2157 |
12 |
| Bruker Daltonik GmbH | 20 |
12 |
| The University of North Carolina at Chapel Hill | 2050 |
11 |
| Hitachi, Ltd. | 15531 |
10 |
| Other owners | 554 |