Emitter material having a plurlarity of grains with interfaces in between
US6479939B1 · kind B1 · utility
12Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1999 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Dec 2, 2019 |
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.