H01J 2209/00
Apparatus and processes for manufacture of discharge tubes
H01J2209/00 (Apparatus and processes for manufacture of discharge tubes) appears on 437 US grants and 219 published applications in this corpus.
Search patents in H01J- Granted patents
- 437
- Published applications
- 219
- Assignees
- 196
- Inventors
- 889
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 12 | 0 |
| 1994 | 5 | 0 |
| 1995 | 11 | 0 |
| 1996 | 20 | 0 |
| 1997 | 16 | 0 |
| 1998 | 20 | 0 |
| 1999 | 30 | 0 |
| 2000 | 30 | 0 |
| 2001 | 19 | 13 |
| 2002 | 21 | 13 |
| 2003 | 19 | 14 |
| 2004 | 15 | 22 |
| 2005 | 14 | 9 |
| 2006 | 15 | 17 |
| 2007 | 11 | 20 |
| 2008 | 4 | 6 |
| 2009 | 8 | 10 |
| 2010 | 8 | 9 |
| 2011 | 12 | 9 |
| 2012 | 5 | 2 |
| 2013 | 5 | 2 |
| 2014 | 4 | 3 |
| 2015 | 2 | 0 |
| 2016 | 1 | 4 |
| 2017 | 10 | 11 |
| 2018 | 11 | 9 |
| 2019 | 7 | 8 |
| 2020 | 11 | 4 |
| 2021 | 6 | 7 |
| 2022 | 4 | 4 |
| 2023 | 2 | 3 |
| 2024 | 4 | 9 |
| 2025 | 3 | 3 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 2209/01Generalised techniquesIndexing code122
- H01J 2209/02Manufacture of cathodesIndexing code116
- H01J 2209/38Control of maintenance of pressure in the vesselIndexing code85
- H01J 2209/26Sealing parts of the vessel to provide a vacuum enclosureIndexing code46
- H01J 2209/18Assembling together the component parts of the discharge tubeIndexing code33
- H01J 2209/236Manufacture of magnetic deflecting devicesIndexing code23
- H01J 2209/46Handling of tube components during manufactureIndexing code23
Recent patents
- Mechanical design of electro-hydrodynamic air mover apparatus15 Sep 2026US 12,736,042 B2Ventiva, Inc.
- Ultra-high vacuum seal, assembly, and method of making the same26 May 2026US 12,640,358 B2Quantinuum LLC
- X-ray tube, X-ray generator, and method for producing window member10 Mar 2026US 12,573,578 B2Hamamatsu Photonics K.K.
- X-ray tube, X-ray generator, and method for producing window member20 Jan 2026US 12,531,202 B2Hamamatsu Photonics K.K.
- Electrode and filament coupled by adapter12 Aug 2025US 12,387,902 B1FEI Company
- Process chamber process kit with protective coating3 Sep 2026US 2026/0260852 A1APPLIED Materials.Inc.
- Cathode and manufacturing method thereof23 Jul 2026US 2026/0213111 A1Shanghai United Imaging Healthcare Co., Ltd.
- X-ray rotating anode with two different grain structures in the focal track coating16 Jul 2026US 2026/0204507 A1Plansee SE
- Electrode cleaning apparatus for electro-hydrodynamic air mover device9 Apr 2026US 2026/0097422 A1Ventiva, Inc.
- Mechanical design of electro-hydrodynamic air mover apparatus9 Apr 2026US 2026/0098526 A1Ventiva, Inc.
Most cited
By later US patents
- Method to form self-aligned gate structures around cold cathode emitter tips using chemical mechanical polishing technology285US 5,229,331 AMicron Technology, Inc. · 1993
- Method to form self-aligned gate structures and focus rings158US 5,186,670 AMicron Technology, Inc. · 1993
- Method to form self-aligned gate structures around cold cathode emitter tips using chemical mechanical polishing technology146US 5,372,973 AMicron Technology, Inc. · 1994
- Method of making superhard tips for micro-probe microscopy and field emission116US 5,393,647 A1995
- Method to form self-aligned tips for flat panel displays109US 5,151,061 AMicron Technology, Inc. · 1992