Selective tinting method
US9677222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2015 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249994
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A selective dyeing method is used for dyeing a substrate, selectively within a first exposed surface portion of said substrate. For this purpose, the substrate consists of a material that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion of the substrate in a second portion of the exposed surface. The substrate is heated such that the dye penetrates a pervious material which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.