H03K 4/502
The capacitor being charged from a constant-current source
Official title: the capacitor being charged from a constant-current source
H03K4/502 (The capacitor being charged from a constant-current source) appears on 211 US grants and 155 published applications in this corpus.
Search patents in H03K- Granted patents
- 211
- Published applications
- 155
- Assignees
- 136
- Inventors
- 377
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 3 |
| 2003 | 6 | 4 |
| 2004 | 2 | 3 |
| 2005 | 6 | 7 |
| 2006 | 4 | 7 |
| 2007 | 5 | 4 |
| 2008 | 5 | 10 |
| 2009 | 9 | 8 |
| 2010 | 8 | 13 |
| 2011 | 13 | 11 |
| 2012 | 9 | 9 |
| 2013 | 6 | 8 |
| 2014 | 13 | 7 |
| 2015 | 8 | 8 |
| 2016 | 12 | 5 |
| 2017 | 6 | 6 |
| 2018 | 2 | 3 |
| 2019 | 8 | 11 |
| 2020 | 14 | 8 |
| 2021 | 7 | 1 |
| 2022 | 4 | 7 |
| 2023 | 5 | 4 |
| 2024 | 5 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Vertical ramp automatic amplitude control38US 5,394,020 AZenith Electronics Corporation · 1995
- Voltage controlled oscillator using flip-flop controlled switching circuits32US 4,623,851 AKabushiki Kaisha Toshiba · 1986
- Method and circuit for comparator-less generation of ramped voltage having controlled maximum amplitude28US 6,339,349 B12002
- Ramp voltage generator for differential switching amplifiers25US 5,760,623 ATexas Instruments Incorporated · 1998
- Deflection systems and ramp generators therefor23US 4,490,653 ATektronix, Inc. · 1984