- 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 4/02 - Monocomponent artificial filaments or the like of proteinsManufacture thereof from fibroin
Patent holdings for IPC class D01F 4/02
Total number of patents in this class: 323
10-year publication summary
|
11
|
25
|
47
|
40
|
29
|
21
|
16
|
12
|
17
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Spiber Inc. | 237 |
97 |
| Kojima Industries Corporation | 110 |
23 |
| Trustees of Tufts College | 985 |
20 |
| Bolt Threads, Inc. | 147 |
14 |
| CRANE Inc. | 45 |
14 |
| Spiber IP Management LLC | 20 |
10 |
| National Agriculture and Food Research Organization | 342 |
9 |
| Kowa Company, Ltd. | 1243 |
8 |
| Tufts University | 340 |
8 |
| Riken | 1720 |
7 |
| Aderans Company Limited | 235 |
5 |
| Amsilk GmbH | 99 |
4 |
| Shima Seiki Mfg., Ltd. | 172 |
4 |
| Cambridge Crops, Inc. | 32 |
4 |
| Massachusetts Institute of Technology | 10285 |
3 |
| The Trustees of Columbia University in the City of New York | 3649 |
3 |
| Canon Virginia, Inc. | 136 |
3 |
| Carnegie Mellon University | 1644 |
3 |
| Spiber Technologies AB | 45 |
3 |
| Spinnova Oy | 22 |
3 |
| Other owners | 78 |