Radio wave absorbent
US5965056A · kind A · utility
5Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1998 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Feb 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q17/004
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio wave absorbent comprises an Ni--Cu--Zn base ferrite having a major composition comprising 49 to less than 50 mol % of Fe.sub.2 O.sub.3, 32 to 35 mol % of ZnO, 3 to 9 mol % of CuO and 9 to 14 mol % of NiO. The radio wave absorbent further contains an additive molybdenum oxide in an amount of greater than 0 to 0.10 wt %, calculated as MoO.sub.3, with the proviso that the total amount of the major composition is 100 wt %. The radio wave absorbent may be used as an exterior or interior material for a building or structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.