- All sections
- E - Fixed constructions
- E01C - Construction of, or surfaces for, roads, sports grounds, or the likemachines or auxiliary tools for construction or repair
- E01C 19/21 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading
Patent holdings for IPC class E01C 19/21
Total number of patents in this class: 52
10-year publication summary
|
8
|
5
|
10
|
7
|
6
|
0
|
8
|
3
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Truesdell Corporation | 11 |
9 |
| Asphalt Systems, Inc. | 39 |
6 |
| Colas | 158 |
3 |
| DBI Holding, LLC | 7 |
3 |
| All States Construction, Inc. | 10 |
3 |
| Kupper-weisser GmbH | 12 |
2 |
| Roadtec, Inc. | 93 |
2 |
| Oy Hilltip Ab | 10 |
2 |
| Idaho Asphalt Supply, Inc | 21 |
2 |
| Bucher Municipal Wernberg GmbH | 9 |
2 |
| Caterpillar Paving Products Inc. | 730 |
1 |
| Caterpillar SARL | 487 |
1 |
| Donelson Construction Co., LLC | 10 |
1 |
| Douglas Dynamics, L.L.C. | 96 |
1 |
| E.D. Etnyre & Co. | 7 |
1 |
| Husqvarna AB | 3036 |
1 |
| Quinspread Technologies Limited | 2 |
1 |
| Road Science, L.L.C. | 13 |
1 |
| Archway Products Limited | 4 |
1 |
| The Gorman Group LLC | 1 |
1 |
| Other owners | 8 |