- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 1/04 - Grooved or vaulted roofing elements of ceramics, glass or concrete, with or without reinforcement
Patent holdings for IPC class E04D 1/04
Total number of patents in this class: 29
10-year publication summary
4
|
4
|
4
|
6
|
1
|
1
|
2
|
1
|
4
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Kuraray Co., Ltd. | 3392 |
4 |
Monier Technical Centre GmbH | 12 |
3 |
Monier Roofing GmbH | 34 |
2 |
Shijiazhuang Nikka Mintech Co., Ltd. | 3 |
2 |
3m Innovative Properties Company | 18406 |
1 |
Chevron U.S.A. Inc. | 3774 |
1 |
Budmat, Bogdan Wiecek | 8 |
1 |
Denka Company Limited | 2189 |
1 |
Forticrete Limited | 5 |
1 |
HCH Spolka zo.o. | 2 |
1 |
Kasai Industry Co., Ltd. | 5 |
1 |
Lafarge Roofing Technical Centers GmbH | 2 |
1 |
Tondach Gleinstätten AG | 1 |
1 |
FUJISLATE Co., Ltd. | 2 |
1 |
Ziegelwerk Bellenberg Wiest GmbH & Co. KG | 3 |
1 |
Abece AB | 1 |
1 |
BMI Group Holdings UK Limited | 42 |
1 |
Aertetto S.r.l. | 2 |
1 |
Nagoya Denki Educational Foundation | 16 |
1 |
BMI Group Holdings UK Limited | 1 |
1 |
Other owners | 2 |