H01J 2237/04

Means for controlling the discharge

H01J2237/04 (Means for controlling the discharge) appears on 1,622 US grants and 1,742 published applications in this corpus.

Search patents in H01J
Granted patents
1,622
Published applications
1,742
Assignees
362
Inventors
2,509
Latest grant
6 Oct 2026

Filings by year

H01J 2237/04: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197800
197910
198010
198100
198220
198310
198410
198500
198610
198760
198810
198910
199050
199130
199270
199370
1994110
1995140
1996110
1997100
1998160
1999280
2000190
20012311
20022420
20032921
20041631
20052334
20063846
20073250
20083559
20094969
20105646
20114048
20124668
20136552
20146756
20157388
20167890
20176685
20188663
20198896
202090117
20218995
202279110
202390106
202457100
202577108
20265973

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

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