- 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: 1911
10-year publication summary
|
132
|
125
|
121
|
136
|
162
|
135
|
153
|
113
|
134
|
104
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shimadzu Corporation | 6237 |
273 |
| Micromass UK Limited | 1122 |
223 |
| Thermo Finnigan LLC | 647 |
187 |
| DH Technologies Development Pte. Ltd. | 1139 |
168 |
| Thermo Fisher Scientific (Bremen) GmbH | 601 |
149 |
| The Trustees of Indiana University | 776 |
55 |
| Hitachi High-Tech Corporation | 5490 |
47 |
| Purdue Research Foundation | 3739 |
46 |
| Bruker Daltonics GmbH & Co. KG | 442 |
36 |
| Agilent Technologies, Inc. | 2645 |
26 |
| Leco Corporation | 201 |
25 |
| Hitachi High-Technologies Corporation | 1996 |
21 |
| Atonarp Inc | 116 |
19 |
| Bruker Scientific LLC | 78 |
15 |
| Quantinuum LLC | 263 |
15 |
| Infineon Technologies Austria AG | 2224 |
13 |
| Battelle Memorial Institute | 2517 |
13 |
| Bruker Daltonik GmbH | 20 |
12 |
| California Institute of Technology | 4000 |
11 |
| The University of North Carolina at Chapel Hill | 2069 |
11 |
| Other owners | 546 |