E04G 21/00
Preparing, conveying, or working-up building materials or building elements in situ
Official title: Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work (conveying in general B65G; lifting devices B66; working stone-like materials B28D; measuring instruments G01)
E04G21/00 (Preparing, conveying, or working-up building materials or building elements in situ) appears on 4,396 US grants and 4,220 published applications in this corpus.
Search patents in E04G- Granted patents
- 4,396
- Published applications
- 4,220
- Assignees
- 1,665
- Inventors
- 6,761
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 47 | 0 |
| 1977 | 47 | 0 |
| 1978 | 49 | 0 |
| 1979 | 27 | 0 |
| 1980 | 26 | 0 |
| 1981 | 41 | 0 |
| 1982 | 40 | 0 |
| 1983 | 31 | 0 |
| 1984 | 38 | 0 |
| 1985 | 23 | 0 |
| 1986 | 43 | 0 |
| 1987 | 55 | 0 |
| 1988 | 33 | 0 |
| 1989 | 52 | 0 |
| 1990 | 48 | 0 |
| 1991 | 62 | 0 |
| 1992 | 59 | 0 |
| 1993 | 55 | 0 |
| 1994 | 60 | 0 |
| 1995 | 48 | 0 |
| 1996 | 65 | 0 |
| 1997 | 75 | 0 |
| 1998 | 82 | 0 |
| 1999 | 84 | 0 |
| 2000 | 78 | 0 |
| 2001 | 74 | 21 |
| 2002 | 75 | 68 |
| 2003 | 66 | 97 |
| 2004 | 88 | 118 |
| 2005 | 66 | 112 |
| 2006 | 72 | 141 |
| 2007 | 56 | 124 |
| 2008 | 46 | 127 |
| 2009 | 63 | 152 |
| 2010 | 87 | 123 |
| 2011 | 76 | 119 |
| 2012 | 75 | 120 |
| 2013 | 87 | 148 |
| 2014 | 126 | 184 |
| 2015 | 145 | 158 |
| 2016 | 145 | 167 |
| 2017 | 163 | 200 |
| 2018 | 155 | 205 |
| 2019 | 180 | 233 |
| 2020 | 188 | 251 |
| 2021 | 166 | 240 |
| 2022 | 173 | 252 |
| 2023 | 164 | 237 |
| 2024 | 244 | 302 |
| 2025 | 210 | 175 |
| 2026 | 138 | 146 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E04G 21/14Conveying or assembling building elements1,507
- E04G 21/32Safety or protective measures for persons during the construction of buildings974
- E04G 21/02Conveying or working-up concrete or similar masses able to be heaped or924
- E04G 21/12Mounting of reinforcing inserts639
- E04G 21/24Safety or protective measures preventing damage to building parts or finishing work509
- E04G 21/005Mortar boards9
Recent patents
- Stability monitoring function for a thick matter conveying system6 Oct 2026US 12,753,616 B2Putzmeister Engineering GmbH
- Escape structure29 Sep 2026US 12,746,416 B2
- 3-dimensional printed structure and a system and method for the 3-dimensional printing of structures29 Sep 2026US 12,747,574 B2Azure Printed Homes, Inc
- Collated rebar clip29 Sep 2026US 12,747,588 B2
- Systems and methods of producing components for use in the construction of modular building units15 Sep 2026US 12,735,907 B2Buildz, LLC
- Method and Construction Machine8 Oct 2026US 2026/0307953 A1Putzmeister Engineering GmbH
- Deck post for multi-storey building construction8 Oct 2026US 2026/0308927 A1
- Safety system8 Oct 2026US 2026/0308928 A1
- Modular infrastructure for constructing housing units24 Sep 2026US 2026/0286727 A1Teravila Inc.
- Electric drive device for the electric operation of a truck-mounted concrete pump, truck-mounted concrete pump and system for operating a truck-mounted concrete pump24 Sep 2026US 2026/0286730 A1
Most cited
By later US patents
- Collapse resistant polyester container for hot fill applications162US 4,497,855 AMonsanto Company · 1985
- Robotic systems for automated construction141US 7,641,461 B2University of Southern California · 2010
- Mounting device for controlling uplift of a metal roof139US 5,715,640 A1998
- Mounting device for building structures129US 5,228,248 A1993
- Methods and apparatus for computer-assisted spray foam fabrication129US 9,566,742 B2Massachusetts Institute of Technology · 2017