C04B 14/18
Perlite
C04B14/18 (Perlite) appears on 104 US grants and 119 published applications in this corpus.
Search patents in C04B- Granted patents
- 104
- Published applications
- 119
- Assignees
- 74
- Inventors
- 269
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 2 | 3 |
| 2009 | 1 | 2 |
| 2010 | 3 | 0 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 3 | 4 |
| 2015 | 1 | 3 |
| 2016 | 2 | 3 |
| 2017 | 5 | 6 |
| 2018 | 5 | 6 |
| 2019 | 10 | 17 |
| 2020 | 7 | 11 |
| 2021 | 9 | 7 |
| 2022 | 8 | 10 |
| 2023 | 8 | 13 |
| 2024 | 12 | 11 |
| 2025 | 6 | 7 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ultra stable cementitious material formulation, process for its making, and ultra stable tile backer board formulation and processes for its making1 Sep 2026US 12,726,151 B2Triton MgO Products, LLC
- Ultra stable structural laminate28 Oct 2025US 12,454,487 B2
- Efficient sound-absorbing lightweight aggregate cellular concrete, method for preparing the same, and application thereof12 Aug 2025US 12,384,721 B1Shandong University
- Fiber cement products and methods for the production thereof29 Jul 2025US 12,371,373 B2Etex Services NV
- Fiber cement decking products and methods for the production thereof10 Jun 2025US 12,325,663 B2Eternit GmbH
- Smart construction materials for ambient modification of built environments8 Oct 2026US 2026/0308064 A1Texas State University
- Reducing mixer buildup of binder material through staged addition of raw materials10 Sep 2026US 2026/0265144 A1United States Gypsum Company
- Lightweight polymer concrete panel and a method and composition for its manufacture30 Apr 2026US 2026/0116822 A1Concrete Products OÜ
- Drag force indicator23 Apr 2026US 2026/0110622 A1United States Gypsum Company
- Self-Hardening Slurry Composition and Method18 Dec 2025US 2025/0382230 A1Liquid Earth Support Inc.
Most cited
By later US patents
- Lightweight building material board63US 5,256,222 AManville Corporation · 1993
- Lightweight joint compound having improved paintability62US 4,686,253 AUnited States Gypsum Company · 1987
- Servicing a wellbore with wellbore fluids comprising perlite50US 7,350,573 B2Halliburton Energy Services.Inc. · 2008
- High strength structural perlite concrete49US 5,114,617 AAdvanced Concrete Technology, Inc. · 1992
- Acoustical gypsum board panel and method of making it48US 8,057,915 B2United States Gypsum Company · 2011