G01R 5/28
Electrostatic instruments
G01R5/28 (Electrostatic instruments) appears on 50 US grants and 26 published applications in this corpus.
Search patents in G01R- Granted patents
- 50
- Published applications
- 26
- Assignees
- 33
- Inventors
- 79
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 2 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 4 |
| 2015 | 1 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 4 | 2 |
| 2019 | 4 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor device capable of measuring electric field strength of an external electric field and method for measuring external electric field18 Aug 2026US 12,710,462 B2Otowa Electric Co., Ltd.
- Sensor device capable of measuring electric field strength of an external electric field and method for measuring external electric field5 May 2026US 12,618,885 B2Otowa Electric Co., Ltd.
- Vector-sensitive electrometer31 May 2022US 11,346,877 B2Northrop Grumman Systems Corporation
- Timing and/or phase adjustment of the separation and/or charging of drops from a fluid stream in a flow cytometer22 Oct 2019US 10,451,535 B2Bio-Rad Laboratories, Inc.
- Method for detecting surface electric field distribution of nanostructures1 Oct 2019US 10,429,425 B2Hon Hai Precision Industry Co., Ltd.
- A sensor device capable of measuring electric field strength of an external electric field and method for measuring external electric field5 Sep 2024US 2024/0295596 A1Otowa Electric Co., Ltd.
- Vector-sensitive electrometer2 Sep 2021US 2021/0270882 A1Northrop Grumman Systems Corporation
- Timing and/or phase adjustment of the separation and/or charging of drops from a fluid stream in a flow cytometer7 Jun 2018US 2018/0156712 A1Bio-Rad Laboratories, Inc.
- Noncontact voltage measurement apparatus18 Jan 2018US 2018/0017597 A1Alps Electric Co., Ltd.
- Method for calculating surface electric field distribution of nanostructures23 Nov 2017US 2017/0336455 A1Hon Hai Precision Industry Co., Ltd.
Most cited
By later US patents
- Space management system101US 5,241,467 AERS Associates Limited Partnership · 1993
- Electrodynamic sensors and applications thereof53US 7,885,700 B2The University of Sussex · 2011
- Space management system43US 6,016,481 AElectronic Retailing Systems, Inc. · 2000
- Surface potential electrometer and image forming apparatus using the same25US 4,367,948 ACanon Kabushiki Kaisha · 1983
- D.C. Electrostatic voltage follower having ion-coupled probe20US 4,270,090 A1981