Cold cathode
US6580225B2 · kind B2 · utility
14Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/30457
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.