B29L 2031/3412
Insulators
Official title: {Insulators}
B29L2031/3412 (Insulators) appears on 120 US grants and 58 published applications in this corpus.
Search patents in B29L- Granted patents
- 120
- Published applications
- 58
- Assignees
- 85
- Inventors
- 271
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 4 |
| 2005 | 1 | 2 |
| 2006 | 3 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 0 | 6 |
| 2016 | 3 | 7 |
| 2017 | 3 | 3 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 3 | 5 |
| 2021 | 4 | 3 |
| 2022 | 4 | 4 |
| 2023 | 0 | 1 |
| 2024 | 2 | 5 |
| 2025 | 0 | 5 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Impregnating coating layer for insulating sheetsand multilayer laminates15 Sep 2026US 12,734,766 B2Coveme S.P.A.
- Battery module having guide frame and method of manufacturing the same10 Mar 2026US 12,573,706 B2LG Energy Solution, Ltd.
- Dry-type plug-in bushing, manufacturing method of the same, and high-voltage installation comprising same20 Aug 2024US 12,068,089 B2Tai Han Electric Wire Co., Ltd.
- Method for producing a hollow electrical insulator, hollow electrical insulator and use of a hollow electrical insulator23 Jul 2024US 12,042,977 B2Maschinenfabrik Reinhausen GmbH
- Apparatus and a method for forming pre-shaped insulating sheets15 Nov 2022US 11,498,258 B2ATOP S.p.A.
- Silicone rubber insulator shed material, and silicone rubber insulator and preparation method therefor and application thereof18 Dec 2025US 2025/0382422 A1Electric Power Research Institute. China Southern Power Grid
- Production of low density products by additive manufacturing31 Jul 2025US 2025/0242537 A1Carbon, Inc.
- Shrink cap, device comprising a shrink cap, and method of manufacturing a shrink cap29 May 2025US 2025/0174420 A1
- Layer containing effect pigments and scattering additives1 May 2025US 2025/0142980 A1Merck Patent GmbH
- Method for producing spacers for a winding unit and voltage-resistant spacers for cast resin transformers13 Feb 2025US 2025/0054690 A1Siemens Energy Global GmbH & Co. KG
Most cited
By later US patents
- High voltage insulator for electrical components having telescoping insulative sleeves49US 4,481,380 AAlden Research Foundation · 1984
- Recoverable article with outwardly extending hollow heat flanges; kit including such article and a cylindrical substrate; and method of making such article34US 4,045,604 ARaychem Corporation · 1977
- Composite insulator structure and method of construction30US 5,374,780 AMacLean-Fogg Company · 1994
- Insulator structure and method of construction30US 5,406,033 AMacLean-Fogg Company · 1995
- Process for manufacturing open-air compound insulators29US 4,246,696 ARosenthal Technik AG · 1981