Seamless master and method of making same
US6675863B1 · kind B1 · utility
5Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Nov 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Hollow, cylindrical, seamless metal master for producing seamless diffuser sheets of preselected length and width. Additional aspects of the invention include a hollow cylindrical seamless invertable elastomeric master and method of making the same and an apparatus and process for effecting variable diffuser recording in photosensitive medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.