C01B 33/14
Colloidal silica
Official title: Colloidal silica, e.g. dispersions, gels, sols
C01B33/14 (Colloidal silica) appears on 888 US grants and 1,026 published applications in this corpus.
Search patents in C01B- Granted patents
- 888
- Published applications
- 1,026
- Assignees
- 508
- Inventors
- 2,191
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 18 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 13 | 0 |
| 1998 | 16 | 0 |
| 1999 | 10 | 0 |
| 2000 | 14 | 0 |
| 2001 | 9 | 6 |
| 2002 | 23 | 10 |
| 2003 | 16 | 18 |
| 2004 | 16 | 21 |
| 2005 | 3 | 18 |
| 2006 | 6 | 23 |
| 2007 | 10 | 25 |
| 2008 | 6 | 28 |
| 2009 | 11 | 33 |
| 2010 | 14 | 38 |
| 2011 | 31 | 38 |
| 2012 | 13 | 40 |
| 2013 | 24 | 25 |
| 2014 | 26 | 30 |
| 2015 | 24 | 24 |
| 2016 | 24 | 31 |
| 2017 | 26 | 34 |
| 2018 | 35 | 79 |
| 2019 | 47 | 73 |
| 2020 | 56 | 60 |
| 2021 | 50 | 64 |
| 2022 | 41 | 72 |
| 2023 | 53 | 63 |
| 2024 | 53 | 65 |
| 2025 | 53 | 67 |
| 2026 | 30 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01B 33/157After-treatment of gels368
- C01B 33/141Preparation of hydrosols or aqueous dispersions242
- C01B 33/146After-treatment of sols206
- C01B 33/145Preparation of hydroorganosols, organosols or dispersions in an organic medium118
- C01B 33/152Preparation of hydrogels112
- C01B 33/155Preparation of hydroorganogels or organogels56
Recent patents
- Method of preparing high-concentration colloidal silica29 Sep 2026US 12,747,161 B2Korea Institute of Science and Technology
- Heat resistant aerogel materials15 Sep 2026US 12,735,554 B2Aspen Aerogels, Inc.
- Silica wet gel and aerogel1 Sep 2026US 12,722,355 B2Cardinal CG Company
- Aerogel blanket1 Sep 2026US 12,722,979 B2LG Chem.Ltd.
- Grain-oriented electrical steel sheet and manufacturing method therefor25 Aug 2026US 12,716,134 B2Nippon Steel Corporation
- Methods of making carbon coated particles from reclaimed carbon and other particles1 Oct 2026US 2026/0297731 A1Cabot Corporation
- Method for producing silica sol and silica sol24 Sep 2026US 2026/0285695 A1Fujimi Incorporated
- Chemically modified metal-oxide particles17 Sep 2026US 2026/0274688 A1Fujifilm Electronic Materials U.S.A., Inc.
- Method for preparing silica aerogel blanket17 Sep 2026US 2026/0274689 A1LG Chem.Ltd.
- Aerogel compositions and methods17 Sep 2026US 2026/0274690 A1Aspen Aerogels, Inc.
Most cited
By later US patents
- Thermal oxide equivalent low temperature ALD oxide for dual purpose gate oxide and method for producing the same426US 10,106,892 B1Globalfoundries Inc. · 2018
- Rapid aerogel production process158US 6,670,402 B1Aspen Aerogels, Inc. · 2003
- Method for producing metal oxide aerogels having densities less than 0.02 g/cc134US 5,275,796 AThe Regents of the University of California · 1994
- Elongated-shaped silica sol and method for preparing the same133US 5,221,497 ANissan Chemical Industries, Ltd. · 1993
- Polysilicate microgels as retention/drainage aids in papermaking126US 4,954,220 AE. I. Du Pont de Nemours and Company · 1990