Method of printing marks on an optical article
US8118229B2 · kind B2 · utility
0Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2007 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Nov 3, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M1/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An optical article with a plurality of optically detectable marks on a first surface of the optical article, wherein a mark of the plurality of marks has a thickness of less than or equal to about 1 micrometer, and wherein the plurality of optically detectable marks have uniform thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.