H01J 2201/3425
Metals, metal alloys
H01J2201/3425 (Metals, metal alloys) appears on 26 US grants and 13 published applications in this corpus.
Search patents in H01J- Granted patents
- 26
- Published applications
- 13
- Assignees
- 17
- Inventors
- 43
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 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 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 4 |
| 2020 | 5 | 4 |
| 2021 | 0 | 0 |
| 2022 | 3 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron emitter structure, external photoelectric effect emitter, particle collecting device, tunnel surface emitter, semiconductor- based direct emitter and liquid ioniser comprising same, gas sensor comprising an emitter or emitter structure, method for generating free electrons, and method for collecting particles8 Apr 2025US 12,272,513 B2DBT GmbH
- Photo-cathode for a vacuum system25 Mar 2025US 12,261,010 B2Hamamatsu Photonics K.K.
- Emitter with excellent structural stability and enhanced efficiency of electron emission and X-ray tube comprising the same24 Oct 2023US 11,798,773 B2AweXome Ray, Inc.
- Emitter with excellent structural stability and enhanced efficiency of electron emission and X-ray tube comprising the same7 Mar 2023US 11,600,462 B2AweXome Ray, Inc.
- Emitter with excellent structural stability and enhanced efficiency of electron emission and X-ray tube comprising the same20 Dec 2022US 11,532,453 B2AweXome Ray, Inc.
- Electron emitter structure, external photoelectric effect emitter, particle collecting device, tunnel surface emitter, semiconductor-based direct emitter and liquid ioniser comprising same, gas sensor comprising an emitter or emitter structure, method for generating free electrons, and method for collecting particles8 Aug 2024US 2024/0266134 A1DBT GmbH
- Photoelectric surface21 Sep 2023US 2023/0301122 A1Hamamatsu Photonics K.K.
- Emitter with excellent structural stability and enhanced efficiency of electron emission and x-ray tube comprising the same8 Dec 2022US 2022/0392730 A1AweXome Ray, Inc.
- Photo-cathode for a vacuum system29 Sep 2022US 2022/0310349 A1Hamamatsu Photonics K.K.
- Plasmonic photocathode emitters at ultraviolet and visible wavelengths20 Aug 2020US 2020/0266019 A1KLA Corporation
Most cited
By later US patents
- Photoelectron emitting member and method of electrically charging fine particles with photoelectrons42US 5,154,733 AEbara Research Co., Ltd. · 1992
- Micro secondary electron multiplier23US 4,990,827 AKernforschungszentrum Karlsruhe GmbH · 1991
- Infrared detection18US 4,591,717 ADornier System GmbH · 1986
- Photomultiplier dynode coating materials and process13US 4,639,638 ASangamo Weston, Inc. · 1987
- Photoelectron emitting member13US 5,060,805 AEbara Research Co., Ltd. · 1991