- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 7/28 - Cores; Mandrels
Patent holdings for IPC class B28B 7/28
Total number of patents in this class: 81
10-year publication summary
|
11
|
7
|
7
|
11
|
13
|
6
|
7
|
6
|
7
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
4 |
| RISI Stone Inc. | 54 |
4 |
| Pavestone, LLC | 76 |
3 |
| Relign Corporation | 97 |
3 |
| Speedblock Inc. | 6 |
3 |
| Four Points Developments LLC | 3 |
3 |
| The Boeing Company | 19843 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Concrete Systems, Inc. | 7 |
2 |
| E. Dillon & Company | 36 |
2 |
| FLC Flowcastings GmbH | 6 |
2 |
| Integrated Roadways, LLC | 11 |
2 |
| Kobra Formen GmbH | 44 |
2 |
| Poundfield Products Limited | 6 |
2 |
| Press-seal Corporation | 38 |
2 |
| Stable Concrete Structures, Inc. | 5 |
2 |
| S&M Precast Inc. | 7 |
2 |
| Rtx Corporation | 8674 |
2 |
| Siemens AG | 24990 |
1 |
| Denso Corporation | 23338 |
1 |
| Other owners | 35 |