- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 27/409 - Oxygen concentration cells
Patent holdings for IPC class G01N 27/409
Total number of patents in this class: 497
10-year publication summary
|
33
|
36
|
62
|
57
|
45
|
48
|
32
|
22
|
16
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 25633 |
142 |
| NGK Insulators, Ltd. | 5199 |
133 |
| Niterra Co., Ltd. | 1413 |
61 |
| NGK Spark Plug Co., Ltd. | 873 |
42 |
| Robert Bosch GmbH | 44238 |
10 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12376 |
9 |
| Mitsui Mining & Smelting Co., Ltd. | 1098 |
6 |
| Toyota Motor Corporation | 35906 |
5 |
| Hitachi, Ltd. | 16157 |
4 |
| Osaka Gas Co., Ltd. | 316 |
4 |
| Tanaka Kikinzoku Kogyo K.K. | 574 |
4 |
| Rohm Co., Ltd. | 6846 |
3 |
| Bosch Corporation | 359 |
3 |
| Rosemount Inc. | 1143 |
3 |
| Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | 2000 |
3 |
| Sumitomo Electric Fine Polymer, Inc. | 202 |
3 |
| Yamaha Hatsudoki Kabushiki Kaisha | 2241 |
3 |
| Suzhou Industrial Park Futes Automotive Electronics Co., Ltd | 4 |
3 |
| Illinois Tool Works Inc. | 11862 |
2 |
| Honeywell International Inc. | 12776 |
2 |
| Other owners | 52 |