- 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: 1806
10-year publication summary
|
105
|
135
|
128
|
125
|
142
|
165
|
139
|
152
|
113
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shimadzu Corporation | 5791 |
254 |
| Micromass UK Limited | 1121 |
238 |
| Thermo Finnigan LLC | 625 |
190 |
| DH Technologies Development Pte. Ltd. | 938 |
135 |
| Thermo Fisher Scientific (Bremen) GmbH | 496 |
127 |
| The Trustees of Indiana University | 630 |
48 |
| Purdue Research Foundation | 3277 |
46 |
| Bruker Daltonics GmbH & Co. KG | 440 |
39 |
| Hitachi High-Tech Corporation | 4424 |
36 |
| Agilent Technologies, Inc. | 2744 |
27 |
| Leco Corporation | 200 |
25 |
| Hitachi High-Technologies Corporation | 2034 |
21 |
| Atonarp Inc | 101 |
14 |
| Bruker Daltonik GmbH | 54 |
14 |
| Quantinuum LLC | 123 |
14 |
| Battelle Memorial Institute | 2356 |
13 |
| The University of North Carolina at Chapel Hill | 1928 |
12 |
| PerkinElmer Scientific Canada ULC | 59 |
12 |
| Hitachi, Ltd. | 16452 |
11 |
| JEOL Ltd. | 556 |
11 |
| Other owners | 519 |