Patent holdings for IPC class E01C 19/18

Total number of patents in this class: 89

10-year publication summary

8
7
2
11
9
7
2
4
3
4
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Joseph vogele AG
321
7
Roadtec, Inc.
90
7
Caterpillar Paving Products Inc.
662
6
Idaho Asphalt Supply, Inc
14
6
En-Tech Corporation
13
4
GOMACO Corporation
59
4
Bilfinger Berger SE
5
4
Bilfinger Berger Ingenieurbau GmbH
6
4
Bergkamp, Inc.
27
3
Caterpillar Inc.
9417
2
9277-9347 Quebec Inc.
11
2
Colas
162
2
Duraco, Inc. a Virginia corporation
3
2
Guntert & Zimmerman Const. Div., Inc.
21
2
Potters Industries, LLC
97
2
Volvo Construction Equipment AB
1183
2
Wirtgen GmbH
502
2
Kao Corporation
4939
1
Andrzej R. Biernacki
1
1
Astec, Inc.
50
1
Other owners 25