H01B 3/42
Polyesters
Official title: polyesters; polyethers; polyacetals
H01B3/42 (Polyesters) appears on 623 US grants and 610 published applications in this corpus.
Search patents in H01B- Granted patents
- 623
- Published applications
- 610
- Assignees
- 365
- Inventors
- 1,708
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 9 | 0 |
| 1978 | 16 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 13 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 13 | 0 |
| 1987 | 5 | 0 |
| 1988 | 15 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 11 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 5 | 0 |
| 1999 | 10 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 6 |
| 2003 | 3 | 5 |
| 2004 | 4 | 8 |
| 2005 | 2 | 10 |
| 2006 | 7 | 17 |
| 2007 | 6 | 13 |
| 2008 | 6 | 18 |
| 2009 | 5 | 19 |
| 2010 | 12 | 23 |
| 2011 | 11 | 17 |
| 2012 | 8 | 32 |
| 2013 | 9 | 30 |
| 2014 | 21 | 39 |
| 2015 | 20 | 41 |
| 2016 | 22 | 40 |
| 2017 | 27 | 42 |
| 2018 | 28 | 47 |
| 2019 | 45 | 46 |
| 2020 | 34 | 25 |
| 2021 | 20 | 27 |
| 2022 | 11 | 22 |
| 2023 | 21 | 22 |
| 2024 | 18 | 15 |
| 2025 | 14 | 31 |
| 2026 | 11 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Insulated electrical wire and resin composition29 Sep 2026US 12,749,592 B2Daikin Industries, Ltd.
- Hybrid resins for high voltage applications8 Sep 2026US 12,729,260 B2Elantas Europe S.R.L.
- Copolyetherester1 Sep 2026US 12,723,153 B2Celanese Polymers Holding, Inc.
- Shielded busbar25 Aug 2026US 12,719,253 B2Eae Elektrik Asansor Endustri Insaat Sanayi Veticaret Anonim Sir
- Polyetherester21 Jul 2026US 12,686,769 B2Celanese Polymers Holding, Inc.
- Unimpeded row system8 Oct 2026US 2026/0312537 A1Wtec, LLC
- Electrical apparatus comprising at least one gelled material24 Sep 2026US 2026/0290681 A1Arkema France
- Method of obtaining insulating coating composition, coating composition and conductive materials comprising the same6 Aug 2026US 2026/0226309 A1Weg Tintas Ltda
- Magnet wire with thermoplastic insulation6 Aug 2026US 2026/0229400 A1Essex Solutions USA LLC
- Enamel coated fusible element30 Jul 2026US 2026/0221370 A1Littelfuse, Inc.
Most cited
By later US patents
- Downhole cable223US 8,369,667 B2Halliburton Energy Services.Inc. · 2013
- Foamed electrical wire and a method of producing the same208US 9,142,334 B2Furukawa Electric Co., Ltd. · 2015
- Thermoplastic aromatic polyetherketones129US 4,320,224 AImperial Chemical Industries PLC · 1982
- Process for spinning naphthalate polyester fibers125US 4,000,239 ATeijin Limited · 1976
- Polymer composition and electrical wire insulation73US 5,660,932 ARaychem Corporation · 1997