- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Patent holdings for IPC class G01N 21/78
Total number of patents in this class: 3566
10-year publication summary
|
282
|
257
|
265
|
275
|
269
|
333
|
318
|
266
|
233
|
171
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terumo Kabushiki Kaisha | 5596 |
78 |
| Roche Diabetes Care, Inc. | 1504 |
61 |
| FUJIFILM Corporation | 29586 |
46 |
| F. Hoffmann-La Roche AG | 7947 |
42 |
| Hach Company | 427 |
40 |
| 3m Innovative Properties Company | 17781 |
37 |
| The University of Tokyo | 4208 |
37 |
| ARKRAY, Inc. | 867 |
35 |
| Ecolab USA Inc. | 5519 |
32 |
| Siemens Healthcare Diagnostics Inc. | 2079 |
25 |
| Olympus Corporation | 13140 |
24 |
| Konica Minolta Medical & Graphic, Inc. | 750 |
23 |
| Healthy.io Ltd | 81 |
21 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10946 |
20 |
| Honeywell International Inc. | 13560 |
19 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
18 |
| Precision Planting LLC | 1127 |
18 |
| Sysmex Corporation | 1438 |
18 |
| Roche Diabetes Care GmbH | 629 |
17 |
| The Regents of the University of California | 20087 |
16 |
| Other owners | 2939 |