Mold structure
US7850441B2 · kind B2 · utility
4Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2007 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a mold structure containing a substrate, and a plurality of convex portions formed in the shape of concentric circles at predetermined intervals on one surface of the substrate, wherein a cross-sectional shape of the convex portions with respect to a radial direction of the concentric circles is such that a middle width M of each of the convex portions with respect to a heightwise direction is greater than a width T of a top portion of each of the convex portions with respect to the radial direction of the concentric circles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.