- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 21/52 - Methods or machines specially adapted for the production of tubular articles by extruding
Patent holdings for IPC class B28B 21/52
Total number of patents in this class: 22
10-year publication summary
|
3
|
1
|
2
|
2
|
0
|
0
|
0
|
1
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4589 |
3 |
| Italcementi S.p.A. | 83 |
2 |
| Taiwan Textile Research Institute | 143 |
2 |
| General Electric Company | 18133 |
1 |
| Royal Bank of Canada | 1839 |
1 |
| Tokyo Electron Limited | 11599 |
1 |
| Corning Incorporated | 9932 |
1 |
| Sumitomo Chemical Company, Limited | 8808 |
1 |
| Schaeffler Technologies AG & Co. KG | 8880 |
1 |
| Advanced Technology Emission Solutions Inc. | 31 |
1 |
| Carnegie Mellon University | 1405 |
1 |
| Frito-Lay North America, Inc. | 1350 |
1 |
| Guill Tool & Engineering Co., Inc. | 43 |
1 |
| Hokuriku Seikei Industrial Co., Ltd. | 8 |
1 |
| National University of Singapore | 2228 |
1 |
| Neue Materialien Fürth GmbH | 7 |
1 |
| SolarWorld Industries GmbH | 13 |
1 |
| Xiamen Fengtao Ceramics Co., Ltd | 27 |
1 |
| Other owners | 0 |