G21F 5/04
Means for controlling exposure
Official title: Means for controlling exposure, e.g. time, size of aperture (controlling exposure to X-radiation H05G1/30)
G21F5/04 (Means for controlling exposure) appears on 32 US grants and 20 published applications in this corpus.
Search patents in G21F- Granted patents
- 32
- Published applications
- 20
- Assignees
- 24
- Inventors
- 83
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 2 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 6 |
| 2025 | 2 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ray protection device and radiation inspection system9 Jun 2026US 12,651,676 B2Nuctech Company Limited
- Radioprotective container for radiometric measuring devices11 Nov 2025US 12,469,613 B2Endress + Hauser GmbH + Co. KG
- Methods, storage devices, and infusion systems for therapeutic or diagnostic agents25 Feb 2025US 12,233,027 B2Bayer HealthCare LLC
- Universal chemical processor with radioisotope source30 Jan 2024US 11,883,814 B2Advanced Fusion Systems LLC
- Universal chemical processor with radioisotope source11 Apr 2023US 11,623,196 B1Advanced Fusion Systems LLC
- Measurement apparatus and control method13 Aug 2026US 2026/0235400 A1Yokogawa Electric Corporation
- Radiography sources and radiation exposure devices having tracker module holders27 Nov 2025US 2025/0364150 A1Qsa Global, Inc.
- Methods, storage devices, and infusion systems for therapeutic or diagnostic agents3 Jul 2025US 2025/0213429 A1Bayer HealthCare LLC
- Ray protection device and radiation inspection system1 May 2025US 2025/0140431 A1Nuctech Company Limited
- Methods and apparatus for control of radiographic source exposure13 Feb 2025US 2025/0054649 A1Qsa Global, Inc.
Most cited
By later US patents
- Multiple layer multileaf collimator75US 5,591,983 ASiemens Medical Systems, Inc. · 1997
- System and method for verifying the amount of radiation delivered to an object69US 5,754,622 ASiemens Medical Systems, Inc. · 1998
- Apparatus and method for delivering radiation to an object and for displaying delivered radiation65US 5,621,779 ASiemens Medical Systems, Inc. · 1997
- Apparatus and method for adjusting radiation in a radiation-emitting device64US 5,668,847 ASiemens Medical Systems, Inc. · 1997
- Device for driving and positioning a source holder in an applicator used in radiotherapy57US 4,851,694 ACampaignie ORIS Industrie · 1989