C01B 33/18
Preparation of finely divided silica neither in sol nor in gel form
Official title: Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels C01B33/158; treatment to enhance the pigmenting or filling properties C09C)
C01B33/18 (Preparation of finely divided silica neither in sol nor in gel form) appears on 1,074 US grants and 1,268 published applications in this corpus.
Search patents in C01B- Granted patents
- 1,074
- Published applications
- 1,268
- Assignees
- 640
- Inventors
- 3,028
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 18 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 13 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 14 | 0 |
| 1986 | 11 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 16 | 0 |
| 1992 | 12 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 17 | 0 |
| 1998 | 11 | 0 |
| 1999 | 30 | 0 |
| 2000 | 15 | 0 |
| 2001 | 23 | 4 |
| 2002 | 16 | 18 |
| 2003 | 10 | 45 |
| 2004 | 20 | 14 |
| 2005 | 20 | 30 |
| 2006 | 14 | 39 |
| 2007 | 15 | 29 |
| 2008 | 8 | 32 |
| 2009 | 21 | 36 |
| 2010 | 30 | 47 |
| 2011 | 24 | 47 |
| 2012 | 19 | 57 |
| 2013 | 33 | 43 |
| 2014 | 23 | 68 |
| 2015 | 53 | 58 |
| 2016 | 44 | 39 |
| 2017 | 36 | 56 |
| 2018 | 48 | 49 |
| 2019 | 47 | 56 |
| 2020 | 31 | 65 |
| 2021 | 40 | 71 |
| 2022 | 51 | 89 |
| 2023 | 37 | 63 |
| 2024 | 57 | 91 |
| 2025 | 55 | 81 |
| 2026 | 30 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Negative electrode material, negative electrode plate, and electrochemical apparatus and electronic apparatus containing such negative electrode plate8 Sep 2026US 12,731,783 B2Ningde Amperex Technology Limited
- Method for manufacturing negative electrode material particles1 Sep 2026US 12,725,790 B2CPC Corporation, Taiwan
- Hollow inorganic particle and method for producing said hollow inorganic particle28 Jul 2026US 12,692,169 B2Ube Exsymo Co., Ltd.
- Nanoparticle templates and methods of use for making hollow nanoparticles21 Jul 2026US 12,685,985 B2The Board of Regents of the University of Oklahoma
- Spherical, low surface area precipitated silicas as matting agents in powder coatings30 Jun 2026US 12,668,494 B2Evonik Operations GmbH
- Producing silica nanoparticles during mineral carbonation1 Oct 2026US 2026/0296902 A1Wisconsin Alumni Research Foundation
- Hollow silica particles17 Sep 2026US 2026/0274691 A1Tokuyama Corporation
- Method for preparing multipod silica nanoparticles and multipod silica nanoparticles17 Sep 2026US 2026/0274692 A1Industry-University Cooperation Foundation Hanyang University Erica Campus
- Method of producing alkali metal silicate with reduced metal levels17 Sep 2026US 2026/0274693 A1Evonik Operations GmbH
- Fumed Silica for Rubber Composition and Method for Compressing Fumed Silica10 Sep 2026US 2026/0265488 A1Tokuyama Corporation
Most cited
By later US patents
- Fluorescent silica-based nanoparticles1,448US 8,298,677 B2Cornell Research Foundation, Inc. · 2012
- Diene rubber composition for tire comprising a specific silica as reinforcing filler129US 7,250,463 B2Michelin Recherche et Technique S. A. · 2007
- Electrically assisted synthesis of particles and film with precisely controlled characteristic119US 6,254,940 B1University of Cincinnati · 2001
- Dentifrice compositions112US 5,658,553 AThe Procter & Gamble Company · 1997
- Dentifrice compositions111US 5,603,920 AThe Proctor & Gamble Company · 1997