- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 2/88 - Curtain walls
Patent holdings for IPC class E04B 2/88
Total number of patents in this class: 455
10-year publication summary
|
39
|
35
|
47
|
38
|
24
|
27
|
16
|
26
|
25
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hilti Aktiengesellschaft | 3510 |
28 |
| Brunkeberg Systems AB | 23 |
11 |
| Talon Wall Holdings LLC | 31 |
8 |
| Shenyang Yuanda Aluminium Industry Engineering Co., Ltd. | 16 |
7 |
| Arconic Technologies LLC | 335 |
7 |
| Cemco, LLC | 127 |
7 |
| Illinois Tool Works Inc. | 11503 |
6 |
| Oldcastle BuildingEnvelope, Inc. | 59 |
6 |
| Specified Technologies Inc. | 82 |
6 |
| Invent to Build Inc. | 17 |
6 |
| Inovues, Inc. | 14 |
6 |
| Grand Facade Decoration Engineering Co., Ltd. | 15 |
6 |
| Advanced Architectural Products, LLC | 77 |
5 |
| Saint-Gobain Glass France | 3253 |
5 |
| Technical Glass Products | 6 |
5 |
| Mull-it-over Products | 5 |
4 |
| Simpson Strong-Tie Company, Inc. | 733 |
4 |
| Stephen N. Loyd Irrevocable Family Trust | 4 |
4 |
| Won-Door Corporation | 108 |
4 |
| Precision Wall Systems, Inc. | 15 |
4 |
| Other owners | 316 |