- 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: 3541
10-year publication summary
|
287
|
276
|
279
|
289
|
286
|
356
|
332
|
284
|
234
|
140
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terumo Kabushiki Kaisha | 5522 |
78 |
| Roche Diabetes Care, Inc. | 1493 |
61 |
| FUJIFILM Corporation | 29329 |
46 |
| F. Hoffmann-La Roche AG | 7930 |
42 |
| Hach Company | 420 |
40 |
| The University of Tokyo | 4170 |
38 |
| 3m Innovative Properties Company | 17852 |
37 |
| ARKRAY, Inc. | 873 |
35 |
| Ecolab USA Inc. | 5475 |
32 |
| Olympus Corporation | 13186 |
24 |
| Siemens Healthcare Diagnostics Inc. | 2043 |
24 |
| Konica Minolta Medical & Graphic, Inc. | 786 |
23 |
| Healthy.io Ltd | 80 |
21 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10928 |
20 |
| Honeywell International Inc. | 13531 |
19 |
| Precision Planting LLC | 1114 |
18 |
| National Institute of Advanced Industrial Science and Technology | 3799 |
17 |
| Roche Diabetes Care GmbH | 618 |
17 |
| The Regents of the University of California | 19887 |
16 |
| LaMotte Chemical Products Company | 32 |
16 |
| Other owners | 2917 |