G01P 3/481
Of pulse signals
Official title: of pulse signals
G01P3/481 (Of pulse signals) appears on 2,720 US grants and 1,877 published applications in this corpus.
Search patents in G01P- Granted patents
- 2,720
- Published applications
- 1,877
- Assignees
- 1,108
- Inventors
- 5,030
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 56 | 0 |
| 1977 | 46 | 0 |
| 1978 | 34 | 0 |
| 1979 | 30 | 0 |
| 1980 | 37 | 0 |
| 1981 | 35 | 0 |
| 1982 | 39 | 0 |
| 1983 | 30 | 0 |
| 1984 | 27 | 0 |
| 1985 | 36 | 0 |
| 1986 | 34 | 0 |
| 1987 | 39 | 0 |
| 1988 | 38 | 0 |
| 1989 | 51 | 0 |
| 1990 | 44 | 0 |
| 1991 | 53 | 0 |
| 1992 | 39 | 0 |
| 1993 | 50 | 0 |
| 1994 | 35 | 0 |
| 1995 | 35 | 0 |
| 1996 | 66 | 0 |
| 1997 | 60 | 0 |
| 1998 | 77 | 0 |
| 1999 | 58 | 0 |
| 2000 | 72 | 0 |
| 2001 | 65 | 14 |
| 2002 | 63 | 40 |
| 2003 | 55 | 66 |
| 2004 | 52 | 81 |
| 2005 | 47 | 85 |
| 2006 | 55 | 77 |
| 2007 | 57 | 62 |
| 2008 | 48 | 86 |
| 2009 | 42 | 81 |
| 2010 | 35 | 86 |
| 2011 | 54 | 64 |
| 2012 | 59 | 49 |
| 2013 | 55 | 54 |
| 2014 | 42 | 69 |
| 2015 | 65 | 94 |
| 2016 | 64 | 77 |
| 2017 | 72 | 83 |
| 2018 | 69 | 80 |
| 2019 | 84 | 85 |
| 2020 | 82 | 113 |
| 2021 | 80 | 101 |
| 2022 | 99 | 112 |
| 2023 | 85 | 62 |
| 2024 | 86 | 67 |
| 2025 | 59 | 55 |
| 2026 | 25 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01P 3/487Delivered by rotating magnets1,024
- G01P 3/488Delivered by variable reluctance detectors815
- G01P 3/489Digital circuits therefor640
- G01P 3/486Delivered by photo-electric detectors274
- G01P 3/4815Using a pulse wire sensor71
- G01P 3/484Delivered by contact-making switches31
- G01P 3/483Delivered by variable capacitance detectors27
- G01P 3/482Delivered by nuclear radiation detectors1
Recent patents
- Magnet-based detection system for detecting a movement of a movable object6 Oct 2026US 12,754,200 B2Fraba B.V.
- Rotational speed estimation method for incremental encoder29 Sep 2026US 12,748,125 B2Artery Technology Co., Ltd.
- Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof1 Sep 2026US 12,724,035 B2Pixart Imaging Inc.
- Magnetic sensor device25 Aug 2026US 12,716,751 B2Hirose Electric Co., Ltd.
- Encoder, servo motor, and servo system25 Aug 2026US 12,716,755 B2Kabushiki Kaisha Yaskawa Denki
- Signal control method, signal control apparatus, signal control device, storage medium, and computer program product24 Sep 2026US 2026/0286958 A1Risun Technology (Shenzhen) Limited
- Rotation speed detection apparatus, rotation speed detection system, rotation speed calculation apparatus, and rotation speed detection method27 Aug 2026US 2026/0254323 A1Asahi Kasei Microdevices Corporation
- Systems and methods for detecting an unbalanced load within a washing machine appliance20 Aug 2026US 2026/0242997 A1Haier US Appliance Solutions, Inc.
- Torque measurement based on bearing contact angle controlled by gear force reaction13 Aug 2026US 2026/0235462 A1Pratt & Whitney Canada Corp.
- Rotary power unit, two-stage speed reduction rotary power unit, and robot30 Jul 2026US 2026/0216892 A1Hangzhou Yushu Technology Co., Ltd.
Most cited
By later US patents
- Multi-bit encoder signal conditioning circuit having common mode disturbance compensation655US 5,291,133 AGeneral Motors Corporation · 1994
- Medication infusion system having optical motion sensor to detect drive mechanism malfunction617US 5,097,122 APacesetter Infusion, Ltd. · 1992
- Anti-kickback power tool control220US 4,267,914 ABlack & Decker Inc. · 1981
- Battery tach193US 5,004,979 ABear Automotive Service Equipment Company · 1991
- Semiconductor device having a plurality of semiconductor chips190US 6,133,637 ARohm Co., Ltd. · 2000