H01G 7/028
Having a heterogeneous dielectric
Official title: {having a heterogeneous dielectric}
H01G7/028 (Having a heterogeneous dielectric) appears on 23 US grants and 31 published applications in this corpus.
Search patents in H01G- Granted patents
- 23
- Published applications
- 31
- Assignees
- 29
- Inventors
- 88
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 3 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 2 |
| 2020 | 1 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 0 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electretized film and electronic device8 Aug 2023US 11,723,280 B2Mitsui Chemicals, Inc.
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Most cited
By later US patents
- Electret article63US 4,513,049 AMitsui Petrochemical Industries, Ltd. · 1985
- Piezo-electric material18US 4,128,489 AMitsubishi Petrochemical Co., Ltd. · 1978
- Poromeric material having uniformly distributed electrets for maintaining an electrostatic charge16US 5,384,337 A1995
- Electret material and electrostatic-type acoustic transducer11US 8,971,553 B2Nitto Denko Corporation · 2015
- Process for making a piezoelectric body5US 3,943,387 ASiemens Aktiengesellschaft · 1976