- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 39/06 - Inorganic material, e.g. asbestos fibres, glass beads or fibres
Patent holdings for IPC class B01D 39/06
Total number of patents in this class: 449
10-year publication summary
|
32
|
23
|
27
|
25
|
28
|
16
|
32
|
16
|
23
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4791 |
69 |
| Ibiden Co., Ltd. | 1735 |
33 |
| Corning Incorporated | 10097 |
32 |
| Hitachi Metals, Ltd. | 2026 |
13 |
| SK Innovation Co., Ltd. | 1199 |
13 |
| SK Geo Centric Co., Ltd. | 288 |
13 |
| EP Minerals, LLC | 91 |
6 |
| Hollingsworth & Vose Company | 282 |
6 |
| MANN+HUMMEL GmbH | 1722 |
6 |
| Imerys Filtration Minerals, Inc. | 66 |
5 |
| Imerys USA, Inc. | 140 |
5 |
| Excel Corporate Holdings Limited | 5 |
5 |
| Toyota Motor Corporation | 30345 |
4 |
| Ai Cure Technologies LLC | 35 |
4 |
| Donaldson Company, Inc. | 1576 |
4 |
| Standard H2, Inc. | 14 |
4 |
| Emitec Technologies GmbH | 105 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8515 |
3 |
| GM Global Technology Operations LLC | 14197 |
3 |
| Lawrence Livermore National Security, LLC | 1879 |
3 |
| Other owners | 214 |