- All sections
- B - Performing operationstransporting
- B28B - Shaping clay or other ceramic compositionsshaping slagshaping mixtures containing cementitious material, e.g. plaster
- B28B 3/20 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded
Patent holdings for IPC class B28B 3/20
Total number of patents in this class: 352
10-year publication summary
|
41
|
28
|
33
|
30
|
18
|
21
|
8
|
9
|
10
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5161 |
60 |
| Corning Incorporated | 10586 |
49 |
| Ibiden Co., Ltd. | 1695 |
22 |
| Denso Corporation | 26008 |
11 |
| Sumitomo Chemical Company, Limited | 9002 |
9 |
| Hitachi Metals, Ltd. | 1807 |
8 |
| Mirai Casting America Inc. | 85 |
5 |
| Robert Bosch GmbH | 44459 |
4 |
| Kyocera Corporation | 14546 |
4 |
| Shildan Inc. | 16 |
4 |
| BASF SE | 21337 |
3 |
| 24M Technologies, Inc. | 303 |
3 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 495 |
3 |
| SANYO Chemical Industries, Ltd. | 533 |
3 |
| The School Corporation Kansai University | 180 |
3 |
| Shenzhen Tatfook Technology Co., Ltd. | 102 |
3 |
| Mantec Technical Ceramics Limited | 4 |
3 |
| XtreeE | 14 |
3 |
| Toyota Motor Corporation | 36619 |
2 |
| The Boeing Company | 20237 |
2 |
| Other owners | 148 |