- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 27/41 - Oxygen pumping cells
Patent holdings for IPC class G01N 27/41
Total number of patents in this class: 401
10-year publication summary
|
37
|
30
|
41
|
42
|
39
|
42
|
42
|
34
|
19
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5144 |
130 |
| Denso Corporation | 24783 |
109 |
| Niterra Co., Ltd. | 1334 |
36 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12671 |
16 |
| Robert Bosch GmbH | 43063 |
12 |
| NGK Spark Plug Co., Ltd. | 888 |
11 |
| Toyota Motor Corporation | 33440 |
8 |
| Rohm Co., Ltd. | 6560 |
8 |
| Mitsui Mining & Smelting Co., Ltd. | 1510 |
5 |
| ASCO Power Technologies, L.P. | 84 |
4 |
| Tanaka Kikinzoku Kogyo K.K. | 570 |
4 |
| BorgWarner US Technologies LLC | 434 |
3 |
| The Regents of the University of California | 20289 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46161 |
2 |
| Nippon Telegraph and Telephone Corporation | 16320 |
2 |
| Holley Performance Products, Inc. | 450 |
2 |
| Kabushiki Kaisha Toyota Chuo Kenkyusho | 631 |
2 |
| Loughborough University | 95 |
2 |
| Nippon Electric Glass Co., Ltd. | 2479 |
2 |
| Scania CV AB | 2394 |
2 |
| Other owners | 39 |