- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/15 - Preventing contamination of the components of the optical system or obstruction of the light path
Patent holdings for IPC class G01N 21/15
Total number of patents in this class: 657
10-year publication summary
|
67
|
44
|
58
|
65
|
47
|
48
|
36
|
34
|
27
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hach Lange GmbH | 147 |
17 |
| Ecolab USA Inc. | 5439 |
11 |
| LaMotte Chemical Products Company | 32 |
10 |
| Robert Bosch GmbH | 42392 |
9 |
| Advanced Sensors Limited | 19 |
8 |
| Endress + Hauser Conducta GmbH + Co. KG | 338 |
7 |
| Proanalysis AS | 8 |
7 |
| VUV Analytics, Inc. | 15 |
7 |
| Schlumberger Technology Corporation | 10597 |
6 |
| HORIBA, Ltd. | 805 |
6 |
| Danfoss Ixa A/S | 14 |
6 |
| Halliburton Energy Services, Inc. | 20697 |
5 |
| Abbott Laboratories | 2416 |
5 |
| ASML Netherlands B.V. | 7293 |
5 |
| bioMerieux, Inc. | 433 |
5 |
| Dräger Safety AG & Co. KGaA | 425 |
5 |
| Fujikin Incorporated | 693 |
5 |
| Gen-Probe Incorporated | 1000 |
5 |
| Horiba Advanced Techno, Co., Ltd. | 113 |
5 |
| KLA Corporation | 1501 |
5 |
| Other owners | 518 |