H03K 21/40
Monitoring
Official title: Monitoring; Error detection; Preventing or correcting improper counter operation
H03K21/40 (Monitoring) appears on 241 US grants and 146 published applications in this corpus.
Search patents in H03K- Granted patents
- 241
- Published applications
- 146
- Assignees
- 165
- Inventors
- 406
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 4 |
| 2003 | 1 | 4 |
| 2004 | 9 | 8 |
| 2005 | 4 | 4 |
| 2006 | 8 | 4 |
| 2007 | 2 | 6 |
| 2008 | 5 | 8 |
| 2009 | 5 | 0 |
| 2010 | 4 | 2 |
| 2011 | 2 | 1 |
| 2012 | 3 | 6 |
| 2013 | 2 | 7 |
| 2014 | 7 | 6 |
| 2015 | 8 | 6 |
| 2016 | 7 | 7 |
| 2017 | 7 | 5 |
| 2018 | 8 | 8 |
| 2019 | 9 | 11 |
| 2020 | 8 | 7 |
| 2021 | 10 | 10 |
| 2022 | 12 | 11 |
| 2023 | 11 | 7 |
| 2024 | 4 | 6 |
| 2025 | 12 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Semiconductor device and counting method18 Aug 2026US 12,712,550 B2Kioxia Corporation
- Fractional frequency divider and flash memory controller21 Jul 2026US 12,687,914 B2Silicon Motion, Inc.
- Clock signal frequency divider, processing system, processing device, and clock signal frequency dividing method19 May 2026US 12,633,928 B2NEC Corporation
- Functional safety high-speed counter module including diagnostics circuitry for performing counter pattern test16 Dec 2025US 12,499,006 B2Siemens Aktiengesellschaft
- LFPS pulse detection using unit interval adjustment based on average pulse width25 Nov 2025US 12,483,248 B1Cadence Design Systems, Inc.
- System and methods for clock pulse generation12 Mar 2026US 2026/0074682 A1Ciena Corporation
- Counter with low memory demand5 Feb 2026US 2026/0037354 A1NXP B. V.
- Clock divider and clock division method using same8 Jan 2026US 2026/0012185 A1Itda Semiconductor Co., Ltd.
- Counter System and Method of Driving the Counter System with Zero Accumulated Error17 Jul 2025US 2025/0233593 A1Mediatek Inc.
- Apparatus and Method for Clock Frequency Estimation With Least Squares Method5 Jun 2025US 2025/0180614 A1Microchip Technology Incorporated
Most cited
By later US patents
- Maintaining counters and updating a secondary counter storage96US 7,391,721 B1Cisco Technology, Inc. · 2008
- Non-volatile counting method and apparatus66US 5,181,231 ATexas Instruments Incorporated · 1993
- Binary encoding method with substantially uniform rate of changing of the binary elements and corresponding method of incrementation and decrementation48US 5,300,930 AFrance Telecom · 1994
- Ripple counter with reverse-propagated zero detection38US 5,060,243 AMotorola, Inc. · 1991
- System and method for implementing a counter36US 7,065,607 B2Microsoft Corporation · 2006