H03F 3/45179
Using mosfet transistors as the active amplifying circuit
Official title: {using MOSFET transistors as the active amplifying circuit (H03F3/45278 takes precedence)}
H03F3/45179 (Using mosfet transistors as the active amplifying circuit) appears on 5,526 US grants and 5,059 published applications in this corpus.
Search patents in H03F- Granted patents
- 5,526
- Published applications
- 5,059
- Assignees
- 1,115
- Inventors
- 7,457
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 13 | 0 |
| 1983 | 10 | 0 |
| 1984 | 9 | 0 |
| 1985 | 20 | 0 |
| 1986 | 7 | 0 |
| 1987 | 18 | 0 |
| 1988 | 13 | 0 |
| 1989 | 14 | 0 |
| 1990 | 10 | 0 |
| 1991 | 11 | 0 |
| 1992 | 17 | 0 |
| 1993 | 15 | 0 |
| 1994 | 31 | 0 |
| 1995 | 51 | 0 |
| 1996 | 39 | 0 |
| 1997 | 34 | 0 |
| 1998 | 49 | 0 |
| 1999 | 45 | 0 |
| 2000 | 46 | 0 |
| 2001 | 72 | 23 |
| 2002 | 98 | 94 |
| 2003 | 145 | 130 |
| 2004 | 133 | 118 |
| 2005 | 118 | 203 |
| 2006 | 179 | 224 |
| 2007 | 216 | 239 |
| 2008 | 214 | 253 |
| 2009 | 231 | 251 |
| 2010 | 274 | 226 |
| 2011 | 228 | 184 |
| 2012 | 210 | 185 |
| 2013 | 221 | 220 |
| 2014 | 224 | 222 |
| 2015 | 189 | 187 |
| 2016 | 235 | 181 |
| 2017 | 218 | 171 |
| 2018 | 202 | 199 |
| 2019 | 270 | 249 |
| 2020 | 272 | 272 |
| 2021 | 218 | 223 |
| 2022 | 234 | 219 |
| 2023 | 189 | 236 |
| 2024 | 171 | 213 |
| 2025 | 181 | 205 |
| 2026 | 111 | 132 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 3/45183Long tailed pairs3,435
- H03F 3/4521Complementary long tailed pairs having parallel inputs and being supplied in parallel496
- H03F 3/45197Pl types490
- H03F 3/45273Mirror types280
- H03F 3/45237Complementary long tailed pairs having parallel inputs and being supplied in series216
- H03F 3/45269Complementary non-cross coupled types127
- H03F 3/45264Complementary cross coupled types75
- H03F 3/45224Complementary pl types having parallel inputs and being supplied in parallel53
All 9 subgroupsShow fewer
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Most cited
By later US patents
- CMOS Operational amplifier225US 4,554,515 AAT&T Laboratories · 1985
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