F21V 21/12
Capable of being elongated or shortened by the insertion or removal of
Official title: capable of being elongated or shortened by the insertion or removal of intermediate pieces
F21V21/12 (Capable of being elongated or shortened by the insertion or removal of) appears on 75 US grants and 48 published applications in this corpus.
Search patents in F21V- Granted patents
- 75
- Published applications
- 48
- Assignees
- 32
- Inventors
- 97
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 4 | 1 |
| 2005 | 3 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 4 |
| 2010 | 3 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 5 |
| 2013 | 1 | 2 |
| 2014 | 0 | 3 |
| 2015 | 3 | 3 |
| 2016 | 2 | 2 |
| 2017 | 5 | 8 |
| 2018 | 6 | 4 |
| 2019 | 3 | 1 |
| 2020 | 3 | 0 |
| 2021 | 2 | 2 |
| 2022 | 2 | 3 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 3 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pole extension device of marine navigation light21 Apr 2026US 12,607,314 B1
- Portable and spliced lamp stand20 Jan 2026US 12,529,470 B1Linhai Shunsheng Decorative Lighting Co., Ltd
- Outdoor portable light23 Dec 2025US 12,504,156 B2Homesports, LLC
- Conductive rod and lamp including the conductive rod25 Mar 2025US 12,260,973 B2Radiant Opto-Electronics Corporation
- Low voltage artificial tree trunk with integrated AC power7 Jan 2025US 12,188,647 B2Ledup Manufacturing Group Limited
- Outdoor portable light16 Jul 2026US 2026/0202044 A1Homesports, LLC
- Outdoor portable light25 Apr 2024US 2024/0133542 A1Homesports, LLC
- Low voltage artificial tree trunk with integrated ac power13 Jul 2023US 2023/0220980 A1Ledup Manufacturing Group Limited
- Conductive rod and lamp including the conductive rod13 Oct 2022US 2022/0328211 A1Radiant Opto-Electronics Corporation
- A Lamp14 Apr 2022US 2022/0113011 A1Guangzhou Zhifei Lighting Co., Ltd.
Most cited
By later US patents
- Portable stand apparatus for electric flood lights82US 4,228,489 A1980
- Lamp system82US 4,775,922 ABrendel & Loewig Leuchtengesellschaft GmbH & Co. KG · 1988
- Modular stem system for lighting applications82US 5,149,282 ALightolier Division of The Genlyte Group Incorporated · 1992
- Low voltage light construction79US 5,695,279 A1997
- Boom assembly and components thereof53US 4,671,478 AD & D Enterprises, Inc. · 1987