H03K 3/28
Using means other than a transformer for feedback
Official title: using means other than a transformer for feedback
H03K3/28 (Using means other than a transformer for feedback) appears on 585 US grants and 120 published applications in this corpus.
Search patents in H03K- Granted patents
- 585
- Published applications
- 120
- Assignees
- 224
- Inventors
- 841
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 26 | 0 |
| 1978 | 20 | 0 |
| 1979 | 14 | 0 |
| 1980 | 25 | 0 |
| 1981 | 23 | 0 |
| 1982 | 20 | 0 |
| 1983 | 14 | 0 |
| 1984 | 9 | 0 |
| 1985 | 21 | 0 |
| 1986 | 31 | 0 |
| 1987 | 17 | 0 |
| 1988 | 18 | 0 |
| 1989 | 25 | 0 |
| 1990 | 20 | 0 |
| 1991 | 21 | 0 |
| 1992 | 17 | 0 |
| 1993 | 14 | 0 |
| 1994 | 14 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 14 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 5 | 0 |
| 2001 | 14 | 0 |
| 2002 | 3 | 6 |
| 2003 | 6 | 5 |
| 2004 | 5 | 10 |
| 2005 | 2 | 13 |
| 2006 | 9 | 6 |
| 2007 | 9 | 3 |
| 2008 | 4 | 3 |
| 2009 | 3 | 4 |
| 2010 | 4 | 4 |
| 2011 | 3 | 5 |
| 2012 | 3 | 3 |
| 2013 | 4 | 5 |
| 2014 | 9 | 5 |
| 2015 | 3 | 2 |
| 2016 | 3 | 5 |
| 2017 | 7 | 4 |
| 2018 | 3 | 4 |
| 2019 | 9 | 4 |
| 2020 | 3 | 3 |
| 2021 | 5 | 5 |
| 2022 | 5 | 8 |
| 2023 | 5 | 8 |
| 2024 | 8 | 3 |
| 2025 | 5 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Low-power flip flop circuit30 Sep 2025US 12,431,873 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Flip flop circuit2 Sep 2025US 12,407,335 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Flip flop circuit2 Sep 2025US 12,407,336 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Method for forming a timing circuit arrangements for flip-flops29 Jul 2025US 12,375,069 B2Taiwan Semiconductor Manufacturing Company.Ltd
- High voltage pulse generator unit27 May 2025US 12,316,323 B2Opticept Technologies AB
- Method for forming a timing circuit arrangements for flip-flops1 Jan 2026US 2026/0005677 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Flip Flop Circuit27 Nov 2025US 2025/0364977 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Low-power flip flop circuit5 Sep 2024US 2024/0297639 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Method for forming a timing circuit arrangements for flip-flops8 Aug 2024US 2024/0267036 A1Taiwan Semiconductor Manufacturing Company.Ltd
- High voltage pulse generator unit22 Feb 2024US 2024/0063780 A1Opticept Technologies AB
Most cited
By later US patents
- Photo-sensor cell suitable for IC chip312US 5,055,668 ANissan Motor Co., Ltd. · 1991
- Comparator unit for a flash analog-to-digital converter194US 4,910,518 ASamsun Semiconductor and Telecommunications Co., Ltd. · 1990
- On-chip voltage controlled oscillator105US 5,604,466 AInternational Business Machines Corporation · 1997
- Tunable astable multivibrator with buffer transistors91US 4,692,718 AU. S. Philips Corporation · 1987
- Latch circuit and method with complementary clocking and level sensitive scan capability89US 5,172,011 ADigital Equipment Corporation · 1992