C01B 32/25
Diamond
C01B32/25 (Diamond) appears on 537 US grants and 681 published applications in this corpus.
Search patents in C01B- Granted patents
- 537
- Published applications
- 681
- Assignees
- 327
- Inventors
- 1,214
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 2 |
| 2003 | 2 | 2 |
| 2004 | 3 | 10 |
| 2005 | 4 | 24 |
| 2006 | 4 | 11 |
| 2007 | 6 | 11 |
| 2008 | 3 | 7 |
| 2009 | 5 | 17 |
| 2010 | 10 | 33 |
| 2011 | 6 | 14 |
| 2012 | 7 | 21 |
| 2013 | 12 | 16 |
| 2014 | 20 | 28 |
| 2015 | 28 | 38 |
| 2016 | 19 | 32 |
| 2017 | 41 | 50 |
| 2018 | 28 | 41 |
| 2019 | 32 | 31 |
| 2020 | 36 | 40 |
| 2021 | 25 | 53 |
| 2022 | 32 | 47 |
| 2023 | 30 | 53 |
| 2024 | 34 | 45 |
| 2025 | 46 | 28 |
| 2026 | 19 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Synthetic single crystal diamond and method for producing same8 Sep 2026US 12,729,456 B2Sumitomo Electric Industries, Ltd.
- Molecularly doped nanodiamond1 Sep 2026US 12,722,132 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Heat treatment of nanodiamond particles with controlled powder layer depth28 Jul 2026US 12,692,437 B2Schlumberger Technology Corporation
- Superhydrophobic surface in thermal infrared imaging device21 Jul 2026US 12,687,660 B2Teledyne FLIR Commercial Systems, Inc.
- Substrate and method for its manufacturing7 Jul 2026US 12,673,871 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- 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
- Microwave plasma cvd device27 Aug 2026US 2026/0253840 A1National Institute of Advanced Industrial Science and Technology
- A method for preparing diamond on the basis of graphite under normal pressure13 Aug 2026US 2026/0234006 A1Zhejiang University of Technology
Most cited
By later US patents
- Thermally-stable polycrystalline diamond materials and compacts117US 7,473,287 B2Smith International, Inc. · 2009
- Method for synthesizing diamond by using plasma99US 4,767,608 ANational Institute for Research in Inorganic Materials · 1988
- Ultrasharp diamond edges and points and method of making89US 4,084,942 A1978
- Combustion flame synthesis of nanophase materials88US 5,876,683 A1999
- Method to produce light-emitting nano-particles of diamond61US 8,574,536 B2Inserm (Institut National De La Sante Et De La Recherche Medicale) · 2013