C01B 32/28
After-treatment
Official title: After-treatment, e.g. purification, irradiation, separation or recovery
C01B32/28 (After-treatment) appears on 250 US grants and 319 published applications in this corpus.
Search patents in C01B- Granted patents
- 250
- Published applications
- 319
- Assignees
- 164
- Inventors
- 590
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 16 |
| 2006 | 1 | 3 |
| 2007 | 4 | 4 |
| 2008 | 2 | 2 |
| 2009 | 4 | 7 |
| 2010 | 3 | 23 |
| 2011 | 3 | 11 |
| 2012 | 5 | 14 |
| 2013 | 10 | 11 |
| 2014 | 11 | 10 |
| 2015 | 18 | 18 |
| 2016 | 11 | 13 |
| 2017 | 18 | 14 |
| 2018 | 11 | 18 |
| 2019 | 12 | 8 |
| 2020 | 14 | 16 |
| 2021 | 11 | 26 |
| 2022 | 10 | 31 |
| 2023 | 10 | 23 |
| 2024 | 19 | 19 |
| 2025 | 30 | 15 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synthetic single crystal diamond and method for producing same8 Sep 2026US 12,729,456 B2Sumitomo Electric Industries, Ltd.
- Heat treatment of nanodiamond particles with controlled powder layer depth28 Jul 2026US 12,692,437 B2Schlumberger Technology Corporation
- Substrate and method for its manufacturing7 Jul 2026US 12,673,871 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Diamond substrate manufacturing method16 Jun 2026US 12,654,259 B2Disco Corporation
- NV-center-based microwave-free quantum sensor and uses and characteristics thereof16 Jun 2026US 12,656,281 B2Quantum Technologies, Inc.
- Method for separating or concentrating nd particles having group-14 color center10 Sep 2026US 2026/0265067 A1Daicel Corporation
- Surface-modified nanodiamond3 Sep 2026US 2026/0256917 A1Daicel Corporation
- Luminescent diamond3 Sep 2026US 2026/0258299 A1Schlumberger Technology Corporation
- Compositions and articles comprising (nano)diamond particles2 Jul 2026US 2026/0183419 A1Debina Diagnostics, Inc.
- Methods of etching diamond films2 Jul 2026US 2026/0184576 A1APPLIED Materials.Inc.
Most cited
By later US patents
- Thermally-stable polycrystalline diamond materials and compacts117US 7,473,287 B2Smith International, Inc. · 2009
- Method to produce light-emitting nano-particles of diamond61US 8,574,536 B2Inserm (Institut National De La Sante Et De La Recherche Medicale) · 2013
- Method for preparation of diamond ceramics33US 4,882,138 ACrystallume · 1989
- Microwave plasma CVD method for coating a substrate with high thermal-conductivity diamond material31US 5,271,971 ACrystallume · 1993
- Method for consolidating diamond particles to form high thermal conductivity article31US 5,273,790 ACrystallume · 1993