A61H 2201/0257

By a heat accumulator

Official title: by a heat accumulator, e.g. a sand or liquid reservoir

A61H2201/0257 (By a heat accumulator) appears on 177 US grants and 259 published applications in this corpus.

Search patents in A61H
Granted patents
177
Published applications
259
Assignees
100
Inventors
394
Latest grant
6 Jan 2026

Filings by year

A61H 2201/0257: granted patents and published applications per publication year
YearGranted patentsPublished applications
197820
197900
198020
198100
198200
198300
198400
198510
198600
198710
198800
198910
199010
199120
199230
199310
199450
199530
199630
199750
199820
199940
200030
200110
200211
200323
200439
200537
200645
2007512
200825
200926
201027
201146
2012413
2013421
2014417
2015727
2016323
20171331
20181918
20191412
2020168
202157
202253
202377
202424
202555
202612

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