E04G 21/08
Internal vibrators
Official title: Internal vibrators {, e.g. needle vibrators (combined with vacuum E04G21/061)}
E04G21/08 (Internal vibrators) appears on 59 US grants and 59 published applications in this corpus.
Search patents in E04G- Granted patents
- 59
- Published applications
- 59
- Assignees
- 36
- Inventors
- 137
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 3 |
| 2004 | 4 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 3 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 3 |
| 2021 | 2 | 3 |
| 2022 | 0 | 5 |
| 2023 | 0 | 1 |
| 2024 | 4 | 14 |
| 2025 | 4 | 3 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Concrete vibrator system14 Apr 2026US 12,601,192 B2Milwaukee Electric Tool Corporation
- System for guiding an operator when compacting concrete31 Mar 2026US 12,590,802 B2Wacker Neuson Produktion GmbH & Co. KG
- Concrete vibrator24 Feb 2026US 12,559,955 B2Honda Motor Co., Ltd.
- Modular concrete tool9 Dec 2025US 12,491,616 B2Milwaukee Electric Tool Corporation
- Concrete vibrator22 Jul 2025US 12,366,077 B2Makita Corporation
- Material preparation systems and related devices and methods of preparing cementitious materials27 Aug 2026US 2026/0250209 A1Saudi Arabian Oil Company
- Quickly-deployable automated rapid-slip-form concrete placement system20 Aug 2026US 2026/0243093 A1
- Concrete vibrator system20 Aug 2026US 2026/0243094 A1Milwaukee Electric Tool Corporation
- Concrete splash shield21 May 2026US 2026/0139499 A1
- Internal Vibratory Device for Compacting a Casting Compound16 Apr 2026US 2026/0103905 A1Robert Bosch GmbH
Most cited
By later US patents
- Battery concrete vibrator45US 5,725,304 AMakita Corporation · 1998
- Concrete vibrator with offset rotor31US 6,155,708 A2000
- Universal power unit that adapts to all phases from placing to final finishing of concrete29US 7,097,384 B22006
- Thixotropic concrete forming system28US 8,959,862 B12015
- High density concrete placer27US 4,314,773 AAllen Engineering Corporation · 1982