- 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: 3662
10-year publication summary
|
276
|
279
|
289
|
287
|
358
|
340
|
288
|
238
|
231
|
105
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terumo Kabushiki Kaisha | 5749 |
76 |
| Roche Diabetes Care, Inc. | 1502 |
62 |
| FUJIFILM Corporation | 30327 |
52 |
| Hach Company | 425 |
45 |
| F. Hoffmann-La Roche AG | 7847 |
42 |
| 3m Innovative Properties Company | 17491 |
37 |
| ARKRAY, Inc. | 867 |
36 |
| The University of Tokyo | 4333 |
36 |
| Ecolab USA Inc. | 5753 |
32 |
| Siemens Healthcare Diagnostics Inc. | 2129 |
26 |
| Olympus Corporation | 12983 |
22 |
| Healthy.io Ltd | 81 |
22 |
| Konica Minolta Medical & Graphic, Inc. | 623 |
21 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11021 |
21 |
| The Regents of the University of California | 20590 |
18 |
| Honeywell International Inc. | 12758 |
18 |
| Precision Planting LLC | 1170 |
18 |
| Sysmex Corporation | 1436 |
18 |
| Roche Diabetes Care GmbH | 674 |
17 |
| National Institute of Advanced Industrial Science and Technology | 3794 |
16 |
| Other owners | 3027 |