H03K 4/08
Having sawtooth shape
Official title: having sawtooth shape
H03K4/08 (Having sawtooth shape) appears on 912 US grants and 459 published applications in this corpus.
Search patents in H03K- Granted patents
- 912
- Published applications
- 459
- Assignees
- 389
- Inventors
- 1,325
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 49 | 0 |
| 1977 | 33 | 0 |
| 1978 | 26 | 0 |
| 1979 | 34 | 0 |
| 1980 | 40 | 0 |
| 1981 | 27 | 0 |
| 1982 | 23 | 0 |
| 1983 | 18 | 0 |
| 1984 | 18 | 0 |
| 1985 | 18 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 8 | 0 |
| 1989 | 19 | 0 |
| 1990 | 15 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 1 |
| 2002 | 7 | 7 |
| 2003 | 11 | 7 |
| 2004 | 3 | 4 |
| 2005 | 10 | 12 |
| 2006 | 7 | 10 |
| 2007 | 6 | 8 |
| 2008 | 11 | 20 |
| 2009 | 11 | 15 |
| 2010 | 18 | 28 |
| 2011 | 23 | 18 |
| 2012 | 20 | 24 |
| 2013 | 14 | 20 |
| 2014 | 32 | 15 |
| 2015 | 19 | 27 |
| 2016 | 33 | 17 |
| 2017 | 23 | 23 |
| 2018 | 14 | 32 |
| 2019 | 45 | 43 |
| 2020 | 62 | 29 |
| 2021 | 23 | 20 |
| 2022 | 21 | 22 |
| 2023 | 20 | 14 |
| 2024 | 18 | 24 |
| 2025 | 15 | 11 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03K 4/48Using as active elements semiconductor devices749
- H03K 4/90Linearisation of ramp58
- H03K 4/83Using as active elements semiconductor devices with more than two pn junctions49
- H03K 4/085Protection of sawtooth generators30
- H03K 4/10Using as active elements vacuum tubes only11
- H03K 4/787Using as active elements semiconductor devices with two electrodes and exhibiting a3
- H03K 4/86Using as active elements gas-filled tubes or spark-gaps3
- H03K 4/80Using as active elements multi-layer diodes0
Recent patents
- High power generator and method of supplying high power pulses16 Jun 2026US 12,658,714 B2Trumpf Huettinger Sp. Z O. O.
- High power generator and method of supplying high power pulses16 Jun 2026US 12,658,715 B2Trumpf Huettinger Sp. Z O. O.
- High power generator and method of supplying high power pulses2 Jun 2026US 12,646,948 B2Trumpf Huettinger Sp. Z O. O.
- Folded ramp generator7 Apr 2026US 12,597,913 B2Texas Instruments Incorporated
- Ramp circuit7 Apr 2026US 12,597,943 B2ams Sensors Belgium BVBA
- Clock generating mechanism capable of mitigating clock glitches of digital circuit by selecting good/better timing to output received frequency control signal10 Sep 2026US 2026/0269812 A1Pixart Imaging Inc.
- Integrated circuit configured to generate a pulse width modulated signal6 Aug 2026US 2026/0230081 A1STMicroelectronics International N. V.
- Pulse formation device and pulse formation method using the same16 Jul 2026US 2026/0205005 A1Korea Electrotechnology Research Institute
- Ramp generator and image sensing device including the same4 Jun 2026US 2026/0155810 A1SK hynix Inc.
- Smart time control for switching among various phases of a device via a single capacitor28 May 2026US 2026/0149443 A1
Most cited
By later US patents
- Oscillator for generating a varying amplitude feed forward PFC modulation ramp81US 5,592,128 AMicro Linear Corporation · 1997
- Automatic brightness control apparatus76US 4,514,727 ATRW Inc. · 1985
- Temperature and power supply compensation circuit for integrated circuits56US 4,879,505 AAnalog Devices, Inc. · 1989
- Digital-to-time converter46US 4,742,331 AAnalog Devices, Inc. · 1988
- Asymmetrical ramp generator system42US 5,574,392 AAnalog Devices, Inc. · 1996