E04C 2/52
With special adaptations for auxiliary purposes
Official title: with special adaptations for auxiliary purposes, e.g. serving for locating conduits (E04C2/54 takes precedence; block-shaped elements therefor E04C1/39; floor structures incorporating ducts E04B5/48)
E04C2/52 (With special adaptations for auxiliary purposes) appears on 588 US grants and 688 published applications in this corpus.
Search patents in E04C- Granted patents
- 588
- Published applications
- 688
- Assignees
- 370
- Inventors
- 1,163
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 3 |
| 2003 | 0 | 8 |
| 2004 | 1 | 3 |
| 2005 | 3 | 7 |
| 2006 | 2 | 6 |
| 2007 | 1 | 6 |
| 2008 | 0 | 8 |
| 2009 | 3 | 17 |
| 2010 | 4 | 15 |
| 2011 | 9 | 15 |
| 2012 | 10 | 10 |
| 2013 | 10 | 24 |
| 2014 | 18 | 35 |
| 2015 | 20 | 37 |
| 2016 | 31 | 47 |
| 2017 | 35 | 51 |
| 2018 | 39 | 53 |
| 2019 | 37 | 50 |
| 2020 | 54 | 47 |
| 2021 | 30 | 55 |
| 2022 | 28 | 48 |
| 2023 | 31 | 35 |
| 2024 | 28 | 46 |
| 2025 | 36 | 29 |
| 2026 | 24 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Foundation systems29 Sep 2026US 12,747,586 B2GroundFORCE IP, LLC
- Modular panels with ganged screw adjoining for building construction29 Sep 2026US 12,747,587 B1
- Construction panel8 Sep 2026US D1,147,463 S1Amp IP LLC · Design
- Dynamic insulation system for switchable building envelope25 Aug 2026US 12,716,232 B2The Regents of the University of Colorado, a body corporate
- CLT building acoustic sprinkler drop flooring system25 Aug 2026US 12,716,235 B2United States Gypsum Company
- Fire-Resistant Building Panels8 Oct 2026US 2026/0308909 A1Envirograf Ltd
- Wall Building System8 Oct 2026US 2026/0308911 A1
- Exterior building augmentation system1 Oct 2026US 2026/0297944 A1Cover Technologies, Inc.
- Construction panel transport systems and methods24 Sep 2026US 2026/0286698 A1Axe Buildings Incorporated
- Pre-assembled construction panels24 Sep 2026US 2026/0286699 A1Axe Buildings Incorporated
Most cited
By later US patents
- Interlocking modular building panel with sealing strip163US 4,186,539 AUnited McGill Corporation · 1980
- Wall panel with prewired power system106US 4,060,294 AHaworth Mfg., Inc. · 1977
- Encapsulated phase change thermal energy _storage materials97US 4,504,402 APennwalt Corporation · 1985
- Building system using prefabricated building panels and fastening components used therewith92US 5,471,804 A1995
- Construction panels for structural support systems85US 4,078,348 A1978