A61N 1/32
Alternating or intermittent currents
Official title: alternating or intermittent currents {(applying electric fields by inductive or capacitive coupling A61N1/40; microwave apparatus A61N5/02)}
A61N1/32 (Alternating or intermittent currents) appears on 34,939 US grants and 41,451 published applications in this corpus.
Search patents in A61N- Granted patents
- 34,939
- Published applications
- 41,451
- Assignees
- 5,710
- Inventors
- 32,077
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 51 | 0 |
| 1977 | 56 | 0 |
| 1978 | 65 | 0 |
| 1979 | 60 | 0 |
| 1980 | 64 | 0 |
| 1981 | 80 | 0 |
| 1982 | 67 | 0 |
| 1983 | 76 | 0 |
| 1984 | 74 | 0 |
| 1985 | 121 | 0 |
| 1986 | 108 | 0 |
| 1987 | 89 | 0 |
| 1988 | 109 | 0 |
| 1989 | 130 | 0 |
| 1990 | 141 | 0 |
| 1991 | 167 | 0 |
| 1992 | 169 | 0 |
| 1993 | 198 | 0 |
| 1994 | 270 | 0 |
| 1995 | 253 | 0 |
| 1996 | 263 | 0 |
| 1997 | 286 | 0 |
| 1998 | 422 | 0 |
| 1999 | 366 | 0 |
| 2000 | 407 | 0 |
| 2001 | 473 | 148 |
| 2002 | 476 | 676 |
| 2003 | 531 | 787 |
| 2004 | 453 | 1044 |
| 2005 | 471 | 1169 |
| 2006 | 686 | 1289 |
| 2007 | 666 | 1363 |
| 2008 | 497 | 1422 |
| 2009 | 676 | 1354 |
| 2010 | 989 | 1722 |
| 2011 | 1176 | 1576 |
| 2012 | 1334 | 1566 |
| 2013 | 1688 | 1689 |
| 2014 | 1910 | 1958 |
| 2015 | 1592 | 1772 |
| 2016 | 1687 | 1989 |
| 2017 | 1631 | 1946 |
| 2018 | 1426 | 1988 |
| 2019 | 1663 | 2107 |
| 2020 | 1594 | 2132 |
| 2021 | 1609 | 2121 |
| 2022 | 1671 | 2143 |
| 2023 | 1579 | 2010 |
| 2024 | 1651 | 2079 |
| 2025 | 1635 | 2016 |
| 2026 | 1083 | 1385 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61N 1/36For stimulation30,123
- A61N 1/38For producing shock effects6,038
- A61N 1/327For enhancing the absorption properties of tissue922
- A61N 1/325For iontophoresis, i.e. transfer of media in ionic state by an electromotoric826
- A61N 1/326For promoting growth of cells769
- A61N 1/328For improving the appearance of the skin415
- A61N 1/323Interference currents, i.e. treatment by several currents summed in the body190
- A61N 1/322Electromedical brushes, combs, massage devices154
All 9 subgroupsShow fewer
Recent patents
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- Electrocochleography-based classification8 Oct 2026US 2026/0306009 A1The University of Melbourne
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By later US patents
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