E04H 15/52
Parallelogram type
Official title: parallelogram type
E04H15/52 (Parallelogram type) appears on 54 US grants and 55 published applications in this corpus.
Search patents in E04H- Granted patents
- 54
- Published applications
- 55
- Assignees
- 28
- Inventors
- 94
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 0 | 0 |
| 2003 | 3 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 6 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 1 | 4 |
| 2017 | 7 | 7 |
| 2018 | 5 | 2 |
| 2019 | 2 | 5 |
| 2020 | 4 | 4 |
| 2021 | 2 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 4 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Electric vehicle camping tent device2 Sep 2025US 12,404,693 B2
- Anti-ponding foldable canopy tent8 Jul 2025US 12,352,064 B2Yotrio Group Co., Ltd.
- Collapsible canopy with reinforcement bars10 Sep 2024US 12,084,879 B2
- Folding canopy with eave structure16 Jul 2024US 12,037,808 B2Zhejiang Jiansheng Leisure Products Co.,Ltd
- Rapidly deployable modular shelter system5 Sep 2023US 11,746,555 B2Weatherhaven Global Resources Ltd.
- Anti-ponding foldable canopy tent18 Dec 2025US 2025/0382819 A1Yotrio Group Co., Ltd.
- Enclosure20 Feb 2025US 2025/0059794 A1
- Collapsible canopy with reinforcement bars5 Dec 2024US 2024/0401367 A1
- Anti-ponding foldable canopy tent8 Aug 2024US 2024/0263483 A1Yotrio Group Co., Ltd.
- Electric Vehicle Camping Tent Device18 Jul 2024US 2024/0240491 A1
Most cited
By later US patents
- Frame supported structure with tensioned fabric panels50US 4,583,331 AClamshell Partners Ltd. · 1986
- Portable structure40US 6,550,491 B1World Patent Development Corporation · 2003
- Extensible and retractable canopy structure for vehicles and the like38US 5,839,462 A1998
- Foldable tent28US 9,140,030 B22015
- Extendable, retractable and portable shelter24US 4,150,682 A1979