- 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: 3311
10-year publication summary
|
212
|
286
|
275
|
277
|
289
|
284
|
342
|
312
|
272
|
77
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terumo Kabushiki Kaisha | 5216 |
76 |
| Roche Diabetes Care, Inc. | 1492 |
51 |
| FUJIFILM Corporation | 27102 |
41 |
| F. Hoffmann-La Roche AG | 7958 |
37 |
| 3m Innovative Properties Company | 18406 |
37 |
| Hach Company | 403 |
37 |
| The University of Tokyo | 3903 |
37 |
| ARKRAY, Inc. | 844 |
33 |
| Ecolab USA Inc. | 5190 |
30 |
| Olympus Corporation | 13667 |
26 |
| Konica Minolta Medical & Graphic, Inc. | 986 |
23 |
| Siemens Healthcare Diagnostics Inc. | 1946 |
22 |
| Honeywell International Inc. | 13799 |
19 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
19 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
18 |
| Japan Science and Technology Agency | 1564 |
18 |
| Sysmex Corporation | 1418 |
18 |
| Healthy.io Ltd | 77 |
18 |
| The Regents of the University of California | 18943 |
16 |
| Kurita Water Industries Ltd. | 1110 |
16 |
| Other owners | 2719 |