Ferraz
FR· latest recorded location
Ferraz is named on 10 US grants and 0 published applications in this corpus. Its most frequent classification is H01H (Electric switches).
- Granted patents
- 10
- Published applications
- 0
- Inventors
- 21
- Granted in 2026 so far
- 0
- Most recent grant
- 6 Aug 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
By publication year.
Technology areas
Share of 10 documents
- H01HElectric switches6
- H01CResistors2
- H01TSpark gaps2
- C01BNon-metallic elements1
- C01GCompounds containing metals not covered by subclasses c01d or c01f1
- C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds1
- C04BLime, magnesia1
- C22BProduction and refining of metals1
- H02HEmergency protective circuit arrangements1
- H03KPulse technique1
Recent patents
- Circuit protection device6 Aug 2002US 6,430,019 B1
- Fusible element for an electrical fuse13 Jun 2000US 6,075,434 A
- Fuse cartridge of the type incorporating an operation indicator28 Jul 1998US 5,786,743 A
- Current limiter component9 Dec 1997US 5,696,390 A
- Method of manufacturing semiconductors from homogeneous metal oxide powder21 Jun 1994US 5,322,642 A
No published applications.
Most cited
By later US patents
- Circuit protection device91US 6,430,019 B12002
- Fusible element for an electrical fuse12US 6,075,434 A2000
- Device for indicating the short-circuiting of a lightning arrester9US 4,788,622 A1988
- Fuse cartridge of the type with functioning indicator7US 5,260,679 A1993
- Electro-mechanical devices incorporating fuse cartridges4US 4,631,508 A1986