- All sections
- E - Fixed constructions
- E04B - General building constructionswalls, e.g. partitionsroofsfloorsceilingsinsulation or other protection of buildings
- E04B 1/20 - Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material
Patent holdings for IPC class E04B 1/20
Total number of patents in this class: 103
10-year publication summary
|
13
|
20
|
23
|
8
|
5
|
15
|
9
|
4
|
5
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lodestar Structures Inc. | 11 |
5 |
| Hainan University | 171 |
3 |
| Permasteelisa North America Corporation | 8 |
3 |
| Gruppo Piccini S.P.A. | 5 |
3 |
| Ohmoto-gumi Co., Ltd. | 5 |
2 |
| Pre-Form Systems LLC | 5 |
2 |
| Ruentex Engineering & Construction Co., Ltd. | 34 |
2 |
| Tindall Corporation | 52 |
2 |
| The University of Tokyo | 4356 |
2 |
| Hickory Design Pty Ltd | 14 |
2 |
| Iavilaer Pty Ltd | 5 |
2 |
| KSE Network Co.,Ltd. | 4 |
2 |
| Zengcheng Biguiyuan Real Estate Development Co., Ltd. | 10 |
2 |
| NXT Building System Pty Ltd | 13 |
2 |
| SSD Corporation | 3 |
2 |
| Masaomi Teshigawara | 2 |
2 |
| Yoshio Inoue | 2 |
2 |
| Empire Technology Development LLC | 1614 |
1 |
| Alion Energy, Inc. | 20 |
1 |
| Alma Mater Studiorum - Universita di Bologna | 436 |
1 |
| Other owners | 60 |