- All sections
- E - Fixed constructions
- E04C - Structural elementsbuilding materials
- E04C 1/00 - Building elements of block or other shape for the construction of parts of buildings
Patent holdings for IPC class E04C 1/00
Total number of patents in this class: 462
10-year publication summary
|
71
|
68
|
34
|
43
|
36
|
20
|
25
|
14
|
13
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Keystone Retaining Wall Systems LLC | 188 |
25 |
| UNILIN, besloten vennootschap | 1020 |
23 |
| Pavestone, LLC | 79 |
17 |
| Anchor Wall Systems, Inc. | 129 |
16 |
| Oldcastle Building Products Canada, Inc. | 173 |
10 |
| Les Materiaux de Construction Oldcastle Canada Inc. | 25 |
9 |
| DDP Specialty Electronic Materials US, LLC | 848 |
9 |
| James Hardie Technology Limited | 461 |
7 |
| RISI Stone Inc. | 49 |
7 |
| Just Biofiber Corp. | 6 |
6 |
| Oldcastle Architectural, Inc. | 18 |
6 |
| Covestro LLC | 618 |
5 |
| ISO-Chemie GmbH | 50 |
5 |
| Renco World Corporation | 15 |
5 |
| Massachusetts Institute of Technology | 10335 |
4 |
| Amvic Inc. | 22 |
4 |
| Plastpro 2000, Inc. | 31 |
4 |
| The Boeing Company | 20230 |
3 |
| Concrete Innovation Services | 3 |
3 |
| Hengestone Holdings, Inc. | 81 |
3 |
| Other owners | 291 |