E04F 2201/044
With tongues or grooves comprising elements which are not manufactured in one
Official title: with tongues or grooves comprising elements which are not manufactured in one piece with the sheets, plates or panels but which are permanently fixedly connected to the sheets, plates or panels, e.g. at the factory
E04F2201/044 (With tongues or grooves comprising elements which are not manufactured in one) appears on 214 US grants and 266 published applications in this corpus.
Search patents in E04F- Granted patents
- 214
- Published applications
- 266
- Assignees
- 54
- Inventors
- 120
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 5 |
| 2004 | 2 | 7 |
| 2005 | 2 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 0 |
| 2008 | 2 | 4 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 3 | 6 |
| 2012 | 3 | 7 |
| 2013 | 7 | 18 |
| 2014 | 16 | 15 |
| 2015 | 16 | 18 |
| 2016 | 14 | 16 |
| 2017 | 10 | 10 |
| 2018 | 12 | 17 |
| 2019 | 20 | 18 |
| 2020 | 12 | 24 |
| 2021 | 17 | 17 |
| 2022 | 10 | 7 |
| 2023 | 16 | 17 |
| 2024 | 12 | 19 |
| 2025 | 12 | 15 |
| 2026 | 11 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E04F 2201/049Wherein the elements are made of organic plastics with or without reinforcementsIndexing code149
- E04F 2201/046Wherein the elements are made of metalIndexing code19
- E04F 2201/045Wherein the elements are made of woodIndexing code14
- E04F 2201/048Wherein the elements are made of fibres or chipsIndexing code9
- E04F 2201/047Wherein the elements are made of stone or stone like materialIndexing code0
Recent patents
- Building panel with a mechanical locking system18 Aug 2026US 12,709,901 B2Välinge Innovation AB
- Panel for forming a covering11 Aug 2026US 12,703,984 B2Unilin BV
- Method for the manufacture of panels and panels obtained thereby14 Jul 2026US 12,679,134 B2Unilin BV
- Method for the manufacture of panels and panels obtained thereby14 Jul 2026US 12,679,135 B2Unilin BV
- Raised floor and assembling method thereof7 Jul 2026US 12,674,331 B2Anhui Coordinated Lin Plastic Technology Co., Ltd.
- Panel for forming a covering8 Oct 2026US 2026/0308919 A1Unilin BV
- Floor panel8 Oct 2026US 2026/0308921 A1Unilin BV
- Method for the manufacture of panels and panels obtained thereby1 Oct 2026US 2026/0296094 A1Unilin BV
- Set of panels comprising a locking device24 Sep 2026US 2026/0286716 A1Välinge Innovation AB
- Flooring component and flooring2 Jul 2026US 2026/0185362 A1Changzhou Zero Point Wood Industry Co., Ltd.
Most cited
By later US patents
- Snap-together flooring system515US 5,295,341 ANikken Seattle, Inc. · 1994
- Sandwich elements in the form of slabs, shells and the like383US 5,348,778 ABayer Aktiengesellschaft · 1994
- Flooring panel or wall panel and use thereof371US 6,418,683 B1Perstorp Flooring AB · 2002
- Flooring panel or wall panel and use thereof358US 6,101,778 APerstorp Flooring AB · 2000
- Flooring panel or wall panel and use thereof261US 6,421,970 B1Perstorp Flooring AB · 2002