Inner surface-modified tube, inner surface-modified tube manufacturing method, and inner surface-modified tube manufacturing device
US10435777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2015 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Oct 15, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An inner surface-modified tube includes fine particles that are buried in an inner surface of a tube with part of surfaces of the fine particles exposed, wherein the fine particles are unevenly distributed such that more fine particles are distributed in a region from a center of the tube to the inner surface of the tube than in a region from the center of the tube to an outer surface of the tube based on a thickness direction of the tube, an arithmetic average roughness Ra of the inner surface of the tube is 1 nm or more and 100 μm or less, a particle diameter of each fine particle is 10 nm or more and 100 μm or less, and an inner diameter of the tube is 0.01 mm or more and 100 mm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.