- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 3/18 - Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of specified materials, or of combinations of materials, not covered by any of groups , or
Patent holdings for IPC class E04D 3/18
Total number of patents in this class: 36
10-year publication summary
4
|
3
|
6
|
6
|
6
|
4
|
3
|
4
|
6
|
0
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Holcim Technology Ltd. | 868 |
5 |
Bmic LLC | 630 |
4 |
Georgia-Pacific Gypsum LLC | 204 |
2 |
Elk Premium Building Products, Inc. | 29 |
2 |
Johns Manville | 980 |
2 |
SunRun South LLC | 35 |
2 |
ZinniaTek Limited | 57 |
2 |
3m Innovative Properties Company | 18406 |
1 |
Beijing Apollo Ding Rong Solar Technology Co., Ltd. | 192 |
1 |
CertainTeed Corporation | 299 |
1 |
Covestro LLC | 577 |
1 |
Garland Industries, Inc. | 84 |
1 |
Huber Engineered Woods LLC | 128 |
1 |
Milliken & Company | 1253 |
1 |
Eternit GmbH | 10 |
1 |
The Shredded Tire Inc. | 7 |
1 |
The Square Company Pty Ltd. | 2 |
1 |
TAMKO Building Products LLC | 119 |
1 |
CertainTeed LLC | 511 |
1 |
Ciella Inc. | 2 |
1 |
Other owners | 4 |