- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 21/56 - Methods or machines specially adapted for the production of tubular articles incorporating reinforcements
Patent holdings for IPC class B28B 21/56
Total number of patents in this class: 20
10-year publication summary
|
5
|
1
|
0
|
0
|
3
|
2
|
3
|
3
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Regents of the University of Michigan | 4409 |
2 |
| EBAA Iron, Inc. | 42 |
2 |
| Vertex, Inc. | 38 |
2 |
| HC Properties Inc. | 14 |
2 |
| Abbott Cardiovascular Systems, Inc. | 1117 |
1 |
| Ajou University Industry-academic Cooperation Foundation | 877 |
1 |
| Hawkeye Concrete Products Co. | 6 |
1 |
| Hawkeyepedershaab Concrete Technologies, Inc. | 28 |
1 |
| Herrenknecht AG | 186 |
1 |
| Hydro-Klean LLC | 13 |
1 |
| Novo Plastics Inc. | 11 |
1 |
| Safran Ceramics | 366 |
1 |
| Trelleborg Forsheda Building AB | 4 |
1 |
| Tuf-bar Inc. | 12 |
1 |
| GE Infrastructure Technology, LLC | 5873 |
1 |
| China Railway Eryuan Engineering Group. Ltd | 12 |
1 |
| Other owners | 0 |