H01J 47/02
Ionisation chambers
H01J47/02 (Ionisation chambers) appears on 318 US grants and 135 published applications in this corpus.
Search patents in H01J- Granted patents
- 318
- Published applications
- 135
- Assignees
- 157
- Inventors
- 542
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 13 | 0 |
| 1982 | 6 | 0 |
| 1983 | 10 | 0 |
| 1984 | 13 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 15 | 0 |
| 1988 | 11 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 14 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 3 |
| 2002 | 12 | 6 |
| 2003 | 3 | 3 |
| 2004 | 3 | 4 |
| 2005 | 3 | 3 |
| 2006 | 4 | 1 |
| 2007 | 1 | 3 |
| 2008 | 4 | 5 |
| 2009 | 2 | 4 |
| 2010 | 4 | 5 |
| 2011 | 5 | 5 |
| 2012 | 5 | 5 |
| 2013 | 3 | 4 |
| 2014 | 5 | 11 |
| 2015 | 7 | 9 |
| 2016 | 7 | 8 |
| 2017 | 7 | 9 |
| 2018 | 5 | 7 |
| 2019 | 8 | 4 |
| 2020 | 8 | 7 |
| 2021 | 6 | 8 |
| 2022 | 4 | 5 |
| 2023 | 6 | 7 |
| 2024 | 8 | 4 |
| 2025 | 3 | 1 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ionisation chambers16 Jun 2026US 12,656,316 B2The Secretary of State for Defence
- System and method for equalizing pressure in ionization chamber of radiation device6 Jan 2026US 12,516,765 B2Shanghai United Imaging Healthcare Co., Ltd.
- Measuring device, measuring method, measuring system, and radiation therapy system23 Dec 2025US 12,504,548 B2Sumitomo Heavy Industries, Ltd.
- Photoionization detector having improved gain and reduced humidity sensitivity28 Oct 2025US 12,455,261 B2Mocon, Inc.
- Dose rate monitor, system and method18 Feb 2025US 12,226,654 B2Varian Medical Systems, Inc.
- Metal window ion chambers and radiation apparatuses including the same28 May 2026US 2026/0148948 A1Varian Medical Systems, Inc.
- Elementary particle detector and associated detection method16 Apr 2026US 2026/0106126 A1Centre National De La Recherche Scientifique
- Photoionization detector having improved gain and reduced humidity sensitivity15 Jan 2026US 2026/0016447 A1Mocon, Inc.
- Method and apparatus for detecting particles in a gas of a process environment as well as a coating system with such an apparatus15 Jan 2026US 2026/0018396 A1Inficon GmbH
- Improvements in ionisation chambers24 Apr 2025US 2025/0130200 A1The Secretary of State for Defence
Most cited
By later US patents
- Ionization chamber for ion beams and method for monitoring the intensity of an ion beam133US 6,437,513 B1Gesellschaft fuer Schwerionenforschung mbH · 2002
- Diagnostic and therapeutic detector system for imaging with low and high energy X-ray and electrons92US 6,429,578 B12002
- Automatic steering of a high velocity beam of charged particles88US 3,955,089 AVarian Associates, Inc. · 1976
- High resolution resonance ionization imaging detector and method75US 6,008,496 AUniversity of Florida · 1999
- Radiation detector with an ionizable gas atop an integrated circuit72US 4,970,391 AMedrad, Inc. · 1990