- 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: 356
10-year publication summary
|
41
|
28
|
33
|
30
|
18
|
21
|
8
|
9
|
10
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 5239 |
62 |
| Corning Incorporated | 10510 |
50 |
| Ibiden Co., Ltd. | 1667 |
22 |
| Hitachi Metals, Ltd. | 1896 |
15 |
| Denso Corporation | 25579 |
11 |
| Sumitomo Chemical Company, Limited | 8968 |
9 |
| Robert Bosch GmbH | 44176 |
4 |
| Kyocera Corporation | 14383 |
4 |
| Shildan Inc. | 16 |
4 |
| BASF SE | 21308 |
3 |
| 24M Technologies, Inc. | 302 |
3 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 495 |
3 |
| SANYO Chemical Industries, Ltd. | 522 |
3 |
| The School Corporation Kansai University | 178 |
3 |
| Shenzhen Tatfook Technology Co., Ltd. | 102 |
3 |
| Mantec Technical Ceramics Limited | 4 |
3 |
| XtreeE | 14 |
3 |
| Toyota Motor Corporation | 35813 |
2 |
| The Boeing Company | 20163 |
2 |
| Lexmark International, Inc. | 1537 |
2 |
| Other owners | 145 |