Method of forming carbon fibers having internal cavities
US10696553B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
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Key dates
| Filing date | Sep 1, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Dec 31, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of forming carbon fibers having internal cavities. The method includes applying a polymer material to a tooling component to form carbon fiber precursor hollow tubes, oxidizing the carbon fiber precursor hollow tubes, and carbonizing the carbon fiber hollow tubes to form carbon fibers, each having a hollow inner cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.