- All sections
- B - Performing operationstransporting
- B28B - Shaping clay or other ceramic compositionsshaping slagshaping mixtures containing cementitious material, e.g. plaster
- B28B 7/28 - CoresMandrels
Patent holdings for IPC class B28B 7/28
Total number of patents in this class: 83
10-year publication summary
|
7
|
11
|
13
|
6
|
7
|
6
|
7
|
6
|
9
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10222 |
5 |
| General Electric Company | 14010 |
4 |
| Pavestone, LLC | 79 |
4 |
| RISI Stone Inc. | 49 |
4 |
| The Boeing Company | 20217 |
3 |
| E. Dillon & Company | 29 |
3 |
| Relign Corporation | 105 |
3 |
| Speedblock Inc. | 6 |
3 |
| Four Points Developments LLC | 3 |
3 |
| Robert Bosch GmbH | 44398 |
2 |
| Besser Company | 28 |
2 |
| Concrete Systems, Inc. | 8 |
2 |
| FLC Flowcastings GmbH | 6 |
2 |
| Kobra Formen GmbH | 29 |
2 |
| Poundfield Products Limited | 3 |
2 |
| Stable Concrete Structures, Inc. | 6 |
2 |
| S&M Precast Inc. | 7 |
2 |
| Integrated Roadways IP LLC | 33 |
2 |
| Siemens AG | 23934 |
1 |
| Denso Corporation | 25820 |
1 |
| Other owners | 31 |