B29C 71/0081
After-treatment of articles without altering their shape: using an electric field
Official title: {using an electric field, e.g. for electrostatic charging (electrostatic pinning of extruded material B29C48/9165; fixing linings by electrostatic charges B29C63/0043)}
B29C71/0081 (After-treatment of articles without altering their shape: using an electric field) appears on 70 US grants and 56 published applications in this corpus.
Search patents in B29C- Granted patents
- 70
- Published applications
- 56
- Assignees
- 60
- Inventors
- 154
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 1 |
| 2003 | 0 | 4 |
| 2004 | 0 | 5 |
| 2005 | 3 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 3 |
| 2009 | 3 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 3 |
| 2015 | 1 | 1 |
| 2016 | 3 | 5 |
| 2017 | 0 | 4 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 3 | 4 |
| 2021 | 7 | 8 |
| 2022 | 4 | 0 |
| 2023 | 3 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Disentangled PVDF for high electromechanical efficiency thin films and fibers6 Oct 2026US 12,753,298 B2Meta Platforms Technologies, LLC
- Toothbrush filament and preparation method therefor, and toothbrush10 Mar 2026US 12,569,057 B2Beijing Piezo-Dent Medical Technology Co., Ltd
- PVDF thin films having high electromechanical efficiency and a gel casting method for forming same19 Aug 2025US 12,391,809 B2Meta Platforms Technologies, LLC
- Method for forming a body comprising at least one through-going passage21 May 2024US 11,986,776 B2Condalign AS
- Method including additive manufacturing a part and post-processing with two ionizing bars and a rotary barrel2 Apr 2024US 11,945,165 B2Chanel Parfums Beaute
- Film8 Jan 2026US 2026/0008222 A1Innovia Films America, Inc.
- Pvdf thin films having high electromechanical efficiency and a gel casting method for forming same8 Jan 2026US 2026/0008895 A1Meta Platforms Technologies, LLC
- Stretching Device and Method for Stretching a Plastic Film in the Transport Direction Thereof20 Nov 2025US 2025/0353242 A1
- Toothbrush filament and preparation method therefor, and toothbrush18 Sep 2025US 2025/0288090 A1Beijing Piezo-Dent Medical Technology Co., Ltd
- Disentangled pvdf for high electromechanical efficiency thin films and fibers18 Jul 2024US 2024/0240007 A1Meta Platforms Technologies, LLC
Most cited
By later US patents
- Method for manufacturing an electret filter medium243US 4,588,537 AMinnesota Mining and Manufacturing Company · 1986
- Method of making fibrous electrets241US 4,375,718 ASurgikos, Inc. · 1983
- Method and apparatus for the electrostatic charging of a web or film195US 5,401,446 AThe University of Tennessee Research Corporation · 1995
- Apparatus and method for producing a three-dimensional object and for applying a layer of a powder material to a surface74US 6,136,257 AEOS GmbH Electro Optical Systems · 2000
- Method for the manufacture of an electret fibrous filter62US 3,998,916 AVerto Inc. · 1976