- 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: 506
10-year publication summary
|
75
|
71
|
68
|
34
|
43
|
36
|
19
|
24
|
13
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Keystone Retaining Wall Systems LLC | 218 |
29 |
| UNILIN, besloten vennootschap | 851 |
27 |
| Anchor Wall Systems, Inc. | 192 |
16 |
| Pavestone, LLC | 70 |
13 |
| Oldcastle Building Products Canada, Inc. | 172 |
9 |
| DDP Specialty Electronic Materials US, LLC | 805 |
9 |
| Les Materiaux de Construction Oldcastle Canada Inc. | 24 |
8 |
| James Hardie Technology Limited | 458 |
7 |
| RISI Stone Inc. | 49 |
7 |
| Just Biofiber Corp. | 6 |
6 |
| Oldcastle Architectural, Inc. | 19 |
6 |
| The Boeing Company | 20025 |
5 |
| Covestro LLC | 580 |
5 |
| ISO-Chemie GmbH | 48 |
5 |
| Renco World Corporation | 15 |
5 |
| Amvic Inc. | 26 |
4 |
| Diversified Foam Products, Inc. | 19 |
4 |
| Plastpro 2000, Inc. | 28 |
4 |
| Syntheon Holdings SpA | 19 |
4 |
| Oldcastle Building Products Canada, Inc. / Les Materiaux de Constructionoldcastle Canada, Inc. | 5 |
4 |
| Other owners | 329 |