C04B 18/027
Lightweight materials
Official title: {Lightweight materials}
C04B18/027 (Lightweight materials) appears on 183 US grants and 157 published applications in this corpus.
Search patents in C04B- Granted patents
- 183
- Published applications
- 157
- Assignees
- 139
- Inventors
- 448
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 4 |
| 2003 | 4 | 3 |
| 2004 | 2 | 6 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 5 |
| 2009 | 1 | 1 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 0 | 1 |
| 2013 | 4 | 5 |
| 2014 | 2 | 2 |
| 2015 | 5 | 2 |
| 2016 | 3 | 7 |
| 2017 | 4 | 13 |
| 2018 | 5 | 14 |
| 2019 | 7 | 11 |
| 2020 | 14 | 17 |
| 2021 | 9 | 11 |
| 2022 | 10 | 19 |
| 2023 | 7 | 11 |
| 2024 | 11 | 6 |
| 2025 | 13 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light weight ceramic aggregates made by agglomerating ceramic fibers22 Sep 2026US 12,741,908 B2Unifrax I LLC
- Heat and fire resistant geopolymer materials21 Jul 2026US 12,686,637 B2
- Admixture composition for the production of lightweight concrete containing polystyrene beads, process for the preparation of the composition and its application9 Jun 2026US 12,649,691 B2“Icl” Innovation Concrete Laboratory KorláToit FelelsséGü TáRasasáG
- Adhesive composition27 Jan 2026US 12,534,406 B2Sika Technology AG
- All-solid waste-based carbonated unburned lightweight aggregate and preparation method thereof20 Jan 2026US 12,528,750 B2Zhejiang University
- Reducing mixer buildup of binder material through staged addition of raw materials10 Sep 2026US 2026/0265144 A1United States Gypsum Company
- Light weight aggregate for low carbon light weight concrete22 Jan 2026US 2026/0022066 A1Colorado School of Mines
- System and method for natural-based construction material1 Jan 2026US 2026/0001811 A1
- Method for Producing Lightweight Aggregate from Waste Coal Ash and Product Made Therefrom6 Nov 2025US 2025/0339885 A1SusMax, Inc.
- Method for preparing lightweight aggregates9 Oct 2025US 2025/0313510 A1Seegex
Most cited
By later US patents
- Method for making hollow porous microspheres166US 4,671,909 A1987
- Hollow porous microspheres made from dispersed particle compositions150US 5,397,759 A1995
- Process for forming a light-weight aggregate146US 4,741,782 AResource Technology, Inc. · 1988
- Hollow porous microspheres containing biocatalyst137US 4,743,545 A1988
- Manufacturing process for hollow microspheres132US 4,420,442 APQ Corporation · 1983