E04G 21/30
Against mechanical damage or dirt
Official title: against mechanical damage or dirt, e.g. guard covers of stairs
E04G21/30 (Against mechanical damage or dirt) appears on 205 US grants and 233 published applications in this corpus.
Search patents in E04G- Granted patents
- 205
- Published applications
- 233
- Assignees
- 80
- Inventors
- 289
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 12 |
| 2004 | 4 | 10 |
| 2005 | 4 | 9 |
| 2006 | 4 | 9 |
| 2007 | 6 | 5 |
| 2008 | 6 | 12 |
| 2009 | 6 | 11 |
| 2010 | 11 | 11 |
| 2011 | 3 | 10 |
| 2012 | 7 | 3 |
| 2013 | 3 | 8 |
| 2014 | 7 | 11 |
| 2015 | 6 | 4 |
| 2016 | 5 | 9 |
| 2017 | 9 | 14 |
| 2018 | 10 | 12 |
| 2019 | 10 | 12 |
| 2020 | 12 | 13 |
| 2021 | 7 | 9 |
| 2022 | 7 | 10 |
| 2023 | 7 | 10 |
| 2024 | 7 | 12 |
| 2025 | 6 | 4 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-closing entryway partition8 Sep 2026US 12,729,551 B2Zipwall, LLC
- Plastic liner for covering a lift basket11 Aug 2026US 12,703,986 B2Tiresocks, Inc.
- Support system14 Jul 2026US 12,680,325 B2Zipwall, LLC
- Heat sensitive protective barrier and a method for its use5 May 2026US 12,616,861 B2
- Temporary protective wall partition barrier system for use during construction and demolition5 May 2026US 12,618,250 B2
- Heat sensitive protective barrier17 Sep 2026US 2026/0273322 A1
- Temporary containment barriers and related methods20 Aug 2026US 2026/0243096 A1Nusens IP, Inc.
- Rail end mount and methods of use30 Jul 2026US 2026/0218817 A1Zipwall, LLC
- Interior protection system for buildings23 Jul 2026US 2026/0210141 A1Cleanrawp, Inc.
- Interior protection system for buildings23 Jul 2026US 2026/0210142 A1Cleanwrap Co., Ltd.
Most cited
By later US patents