C01B 33/148
Concentration
Official title: Concentration; Drying; Dehydration; Stabilisation; Purification {(C01B33/1465 takes precedence)}
C01B33/148 (Concentration) appears on 67 US grants and 75 published applications in this corpus.
Search patents in C01B- Granted patents
- 67
- Published applications
- 75
- Assignees
- 47
- Inventors
- 211
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 5 |
| 2008 | 0 | 4 |
| 2009 | 3 | 4 |
| 2010 | 4 | 6 |
| 2011 | 3 | 4 |
| 2012 | 7 | 4 |
| 2013 | 1 | 6 |
| 2014 | 2 | 6 |
| 2015 | 7 | 2 |
| 2016 | 2 | 4 |
| 2017 | 1 | 3 |
| 2018 | 7 | 2 |
| 2019 | 2 | 4 |
| 2020 | 4 | 1 |
| 2021 | 1 | 3 |
| 2022 | 2 | 1 |
| 2023 | 0 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing silica sol21 Apr 2026US 12,606,444 B2Fujimi Incorporated
- Low thermal conductivity and low-k dielectric aerogel material and preparation method therefor21 Oct 2025US 12,448,294 B2Taiwan Aerogel Technology Material Co., Ltd.
- Silica particle and production method therefor, silica sol, polishing composition, polishing method, method for producing semiconductor wafer and method for producing semiconductor device13 May 2025US 12,297,376 B2Mitsubishi Chemical Corporation
- Composite film of 6FPBO and triple-shelled mesoporous silica hollow spheres and its preparation and use23 Apr 2024US 11,965,070 B2East China University of Science and Technology
- Silica particle and production method therefor, silica sol, polishing composition, polishing method, method for producing semiconductor wafer and method for producing semiconductor device2 Jan 2024US 11,862,470 B2Mitsubishi Chemical Corporation
- Microporous aerogel12 Feb 2026US 2026/0042078 A1Commonwealth Scientific and Industrial Research Organisation
- Unidirectional, interconnected super-micropore silica support5 Feb 2026US 2026/0035253 A1Trustees of Tufts College
- Silica sol containing additive, and method for producing same25 Dec 2025US 2025/0388478 A1Nissan Chemical Corporation
- Stabilized aqueous active silica solution, silica sol using same, and method for producing same2 Oct 2025US 2025/0304452 A1Nissan Chemical Corporation
- Ester-dispersed silica sol and production method therefor19 Jun 2025US 2025/0197644 A1Nissan Chemical Corporation
Most cited
By later US patents
- Elongated-shaped silica sol and method for preparing the same133US 5,221,497 ANissan Chemical Industries, Ltd. · 1993
- Low sodium, low metals silica polishing slurries118US 5,230,833 ANalco Chemical Company · 1993
- Silica sols, a process for the production of silica sols and use of the sols62US 5,447,604 AEka Nobel AB · 1995
- Method of preparing high-purity aqueous silica sol50US 5,100,581 ANissan Chemical Industries, Ltd. · 1992
- Moniliform silica sol, process for producing the same, and ink-jet recording medium30US 6,632,489 B1Nissan Chemical Industries, Ltd. · 2003