- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 13/03 - Sky-lights; Domes; Ventilating sky-lights
Patent holdings for IPC class E04D 13/03
Total number of patents in this class: 320
10-year publication summary
40
|
31
|
35
|
38
|
29
|
34
|
21
|
19
|
31
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
VKR Holding A/S | 575 |
86 |
T&M Inventions, LLC | 29 |
20 |
Solatube International, Inc. | 65 |
16 |
Guardian Glass, LLC | 558 |
15 |
VKR Holding A/S | 15 |
11 |
Eastman Chemical Company | 2239 |
7 |
Rooftop Anchor, Inc. | 20 |
4 |
SVV Technology Innovations, Inc. | 103 |
4 |
Golf Pro Delivered, LLC | 5 |
3 |
Marvin Lumber and Cedar Company | 40 |
3 |
Oregon Health & Science University | 746 |
3 |
Saint-Gobain Glass France | 3641 |
3 |
Fakro PP Spolka Z O.O. | 14 |
3 |
Sichuan Mcwell Ventilation Equipment Co., Ltd. | 3 |
3 |
The Metal Window Co Ltd (Incorporated in The United Kingdom) | 3 |
3 |
ABL IP Holding LLC | 1929 |
2 |
Arizona Board of Regents on behalf of Arizona State University | 2226 |
2 |
Bellwether Design Technologies, LLC | 5 |
2 |
Coelux S.r.l. | 92 |
2 |
Crestron Electronics Inc. | 649 |
2 |
Other owners | 126 |