B60K 31/04

And means for comparing one electrical quantity

Official title: and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means

B60K31/04 (And means for comparing one electrical quantity) appears on 624 US grants and 257 published applications in this corpus.

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Granted patents
624
Published applications
257
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186
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1,070
Latest grant
17 Mar 2026

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B60K 31/04: granted patents and published applications per publication year
YearGranted patentsPublished applications
197620
197710
197880
197960
198030
198170
198290
198370
198470
1985120
1986100
1987130
1988120
1989250
1990270
1991340
1992240
1993210
1994100
1995160
1996200
1997320
1998210
1999130
2000200
20012913
20023427
20032229
20041628
20051932
20061811
20071714
20081312
2009105
201079
201146
201296
201364
201486
2015410
201675
2017713
2018910
201983
202075
202145
202211
202331
202410
202501
202611

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