H03H 11/52
Simulating negative resistances
Official title: simulating negative resistances
H03H11/52 (Simulating negative resistances) appears on 73 US grants and 49 published applications in this corpus.
Search patents in H03H- Granted patents
- 73
- Published applications
- 49
- Assignees
- 56
- Inventors
- 119
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 3 | 4 |
| 2006 | 3 | 1 |
| 2007 | 2 | 4 |
| 2008 | 1 | 3 |
| 2009 | 6 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 3 | 3 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 3 | 4 |
| 2019 | 1 | 1 |
| 2020 | 5 | 3 |
| 2021 | 3 | 3 |
| 2022 | 4 | 2 |
| 2023 | 1 | 0 |
| 2024 | 2 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- VCII based tunable positive and negative impedance simulator and impedance multiplier26 Nov 2024US 12,155,361 B2King Fahd University of Petroleum and Minerals
- Tuning range enhancement by negative resistance10 Sep 2024US 12,088,252 B2Telefonaktiebolaget LM Ericsson (publ)
- Oscillating element25 Apr 2023US 11,637,530 B2Canon Kabushiki Kaisha
- Negative impedance circuit and corresponding device1 Nov 2022US 11,484,910 B2STMicroelectronics S,r.l.
- Clock filter with negative resistor circuit1 Nov 2022US 11,489,515 B2Texas Instruments Incorporated
- Tuning Range Enhancement by Negative Resistance27 Feb 2025US 2025/0070714 A1
- Vcii based tunable positive and negative impedance simulator and impedance multiplier9 May 2024US 2024/0154606 A1King Fahd University of Petroleum and Minerals
- Oscillating element18 Aug 2022US 2022/0263466 A1Canon Kabushiki Kaisha
- Tuning Range Enhancement by Negative Resistance17 Mar 2022US 2022/0085759 A1Telefonaktiebolaget LM Ericsson (publ)
- Clock filter with negative resistor circuit23 Dec 2021US 2021/0399720 A1Texas Instruments Incorporated
Most cited
By later US patents
- Active filter resonator and system and negative resistance generator usable therein34US 5,451,915 AHittite Microwave Corporation · 1995
- Monolithic HBT active tuneable band-pass filter26US 5,550,520 ATRW Inc. · 1996
- Electronically tunable resonator circuit25US 4,338,582 ARCA Corporation · 1982
- Varactor tuned strip line resonator and VCO using same23US 5,942,950 AAIL Systems, Inc. · 1999
- Negative-resistance semiconductor device20US 4,064,525 AMatsushita Electric Industrial Co., Ltd. · 1977