- All sections
- D - Textilespaper
- D01F - Chemical features in the manufacture of man-made filaments, threads, fibres, bristles or ribbonsapparatus specially adapted for the manufacture of carbon filaments
- D01F 9/133 - Apparatus therefor
Patent holdings for IPC class D01F 9/133
Total number of patents in this class: 74
10-year publication summary
|
5
|
4
|
5
|
5
|
1
|
5
|
2
|
9
|
5
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17921 |
8 |
| Sumitomo Electric Industries, Ltd. | 16305 |
6 |
| Massachusetts Institute of Technology | 10239 |
6 |
| University of Tsukuba | 631 |
5 |
| Huntsman Nanocomp LLC | 56 |
5 |
| Nanocomp Technologies, Inc. | 41 |
4 |
| Dowa Thermotech Co., Ltd. | 53 |
3 |
| Cambridge Enterprise Limited | 1243 |
2 |
| The Japan Steel Works, Ltd. | 818 |
2 |
| Meijo Nano Carbon Co., Ltd. | 36 |
2 |
| National University Corporation Kitami Institute of Technology | 23 |
2 |
| Osaka Soda Co., Ltd. | 242 |
2 |
| Nawatechnologies | 16 |
2 |
| Korea Institute of Materials Science | 254 |
2 |
| Levidian Nanosystems Limited | 30 |
2 |
| Nawa Technologies | 2 |
2 |
| Direct Air Capture, LLC | 15 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9115 |
1 |
| Toshiba Corporation | 12548 |
1 |
| Canatu Oy | 49 |
1 |
| Other owners | 14 |