H01B 3/54
Hard paper
Official title: hard paper; hard fabrics
H01B3/54 (Hard paper) appears on 22 US grants and 16 published applications in this corpus.
Search patents in H01B- Granted patents
- 22
- Published applications
- 16
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 7 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 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 3 | 2 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 3 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Complex harness7 Jul 2026US 12,673,625 B2Proterial, Ltd.
- Complex harness8 Oct 2024US 12,109,954 B2Proterial, Ltd.
- Complex harness21 May 2024US 11,987,188 B2Proterial, Ltd.
- Method of manufacturing HVDC mass impregnated cable transition joint16 Jan 2024US 11,876,358 B2Nexans
- Complex harness3 Aug 2021US 11,077,806 B2Hitachi Metals, Ltd.
- Papers Having Low Density and High Average Specific Modulus12 Mar 2026US 2026/0071385 A1Dupont Safety & Construction, Inc.
- Complex harness26 Sep 2024US 2024/0317155 A1Proterial, Ltd.
- Complex harness8 Aug 2024US 2024/0262303 A1Proterial, Ltd.
- Complex harness23 Sep 2021US 2021/0291762 A1Hitachi Metals, Ltd.
- Complex harness11 Jul 2019US 2019/0210543 A1Hitachi Metals, Ltd.
Most cited
By later US patents
- Complex harness38US 9,000,301 B2Hitachi Metals, Ltd. · 2015
- Method of making patterned dry resin coated sheet insulation29US 3,974,302 AWestinghouse Electric Corp. · 1976
- Fire-retardant electric device29US 4,812,262 ANippon Oil Co., Ltd. · 1989
- Complex harness16US 10,279,756 B2Hitachi Metals, Ltd. · 2019
- Complex harness14US 9,463,756 B2Hitachi Metals, Ltd. · 2016