C04B 20/002
Hollow or porous granular materials
Official title: {Hollow or porous granular materials}
C04B20/002 (Hollow or porous granular materials) appears on 157 US grants and 154 published applications in this corpus.
Search patents in C04B- Granted patents
- 157
- Published applications
- 154
- Assignees
- 106
- Inventors
- 344
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 14 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 3 |
| 2004 | 1 | 8 |
| 2005 | 1 | 5 |
| 2006 | 1 | 4 |
| 2007 | 2 | 4 |
| 2008 | 4 | 0 |
| 2009 | 4 | 5 |
| 2010 | 3 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 4 |
| 2013 | 2 | 4 |
| 2014 | 3 | 6 |
| 2015 | 6 | 6 |
| 2016 | 6 | 3 |
| 2017 | 4 | 6 |
| 2018 | 3 | 4 |
| 2019 | 2 | 7 |
| 2020 | 5 | 7 |
| 2021 | 8 | 12 |
| 2022 | 3 | 15 |
| 2023 | 15 | 18 |
| 2024 | 8 | 13 |
| 2025 | 11 | 4 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composite material and method for producing composite material15 Sep 2026US 12,735,359 B2Each Dream Co., Ltd.
- Thermal insulation material and method for producing thermal insulation material14 Jul 2026US 12,679,770 B2Each Dream Co., Ltd.
- Expandable acoustic reinforcement member and manufacturing method therefor and use thereof12 May 2026US 12,627,920 B2SSI New Material (Zhenjiang) Co., Ltd.
- Composite material and method for producing composite material28 Apr 2026US 12,612,337 B2Each Dream Co., Ltd.
- Functionalized silica aerogel powder and preparation method thereof, aerogel slurry and preparation method and use thereof14 Apr 2026US 12,600,639 B2Skyboys (Hangzhou) Technology Co., Ltd
- Cementitious reagents, methods of manufacturing and uses thereof1 Oct 2026US 2026/0296966 A1Terra Co2 Technology Holdings, Inc.
- High performance expandable liner hanger using hydrostatic assist by chemically modifying liner hanger environment17 Sep 2026US 2026/0275182 A1Halliburton Energy Services.Inc.
- Expandable silica particles and methods for making and using the same2 Jul 2026US 2026/0184620 A1Valunor AG
- Daytime Radiative Cooling Cementitious Composite (DRCCC)25 Jun 2026US 2026/0176203 A1Consejo Superior de Investigaciones Cientiflcas (CSIC)
- Active and passive integrated fireproof heat-insulating board and preparation method thereof23 Apr 2026US 2026/0109648 A1China State Construction Hailong Technology Company Limited
Most cited
By later US patents
- Sheets having a highly inorganically filled organic polymer matrix172US 5,508,072 AE. Khashoggi Industries · 1996
- Articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix171US 5,506,046 AE. Khashoggi Industries · 1996
- Starch-based compositions having uniformly dispersed fibers used to manufacture high strength articles having a fiber-reinforced, starch-bound cellular matrix165US 5,679,145 AE. Khashoggi Industries · 1997
- Highly insulative cementitious matrices and methods for their manufacture157US 5,641,584 AE. Khashoggi Industries · 1997
- Laminated articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix154US 5,928,741 AE. Khashoggi Industries · 1999