C04B 35/5935
Obtained by gas pressure sintering
Official title: {obtained by gas pressure sintering}
C04B35/5935 (Obtained by gas pressure sintering) appears on 257 US grants and 105 published applications in this corpus.
Search patents in C04B- Granted patents
- 257
- Published applications
- 105
- Assignees
- 114
- Inventors
- 503
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 24 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 12 | 0 |
| 2001 | 12 | 3 |
| 2002 | 6 | 5 |
| 2003 | 4 | 5 |
| 2004 | 5 | 3 |
| 2005 | 4 | 5 |
| 2006 | 5 | 6 |
| 2007 | 2 | 2 |
| 2008 | 0 | 5 |
| 2009 | 2 | 9 |
| 2010 | 1 | 4 |
| 2011 | 5 | 2 |
| 2012 | 3 | 3 |
| 2013 | 5 | 2 |
| 2014 | 3 | 1 |
| 2015 | 1 | 3 |
| 2016 | 4 | 2 |
| 2017 | 1 | 1 |
| 2018 | 3 | 3 |
| 2019 | 2 | 3 |
| 2020 | 1 | 3 |
| 2021 | 2 | 3 |
| 2022 | 2 | 5 |
| 2023 | 2 | 9 |
| 2024 | 1 | 8 |
| 2025 | 4 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for manufacturing silicon nitride substrate14 Jul 2026US 12,679,774 B2Oci Company Ltd.
- Batch sintering method for high-property silicon nitride ceramic substrate11 Nov 2025US 12,466,772 B2Shanghai Institute of Ceramics, Chinese Academy of Sciences
- Sliding member, and bearing, motor, and drive device using the same29 Jul 2025US 12,371,385 B2Kabushiki Kaisha Toshiba
- Cutting tool15 Jul 2025US 12,358,843 B2Ntk Cutting Tools Co., Ltd.
- Preparation method for copper plate-covered silicon nitride ceramic substrate8 Jul 2025US 12,351,524 B2Shanghai Institute of Ceramics, Chinese Academy of Sciences
- Method for inserting ceramic green compacts, method for producing cip green compacts, method for producing sintered ceramic compacts, and method for producing ceramic ball material6 Aug 2026US 2026/0225960 A1Niterra Materials Co., Ltd.
- Silicon nitride sintered body and wear-resistant member using same4 Jun 2026US 2026/0152442 A1Niterra Materials Co., Ltd.
- Methods and devices for sintering ceramic phosphor converter under pressure26 Mar 2026US 2026/0085238 A1Lumileds LLC
- Process for producing silicon nitride powder29 Jan 2026US 2026/0028226 A1Tokuyama Corporation
- Silicon nitride powder and method for producing same, and silicon nitride sintered body and method for producing same11 Sep 2025US 2025/0282688 A1Denka Company Limited
Most cited
By later US patents
- Uniformly-coated ceramic particles114US 5,098,740 ANorton Company · 1992
- Wear resistant ceramic with a high alpha-content silicon nitride phase107US 5,094,986 AHercules Incorporated · 1992
- Silicon nitride sintered body and method of producing the same105US 6,391,812 B1NGK Insulators, Ltd. · 2002
- Silicon nitride sintered products and processes for their production96US 6,579,819 B2National Institute for Research in Inorganic Materials · 2003
- Method of producing silicon nitride ceramic component95US 5,599,493 ASumitomo Electric Industries, Ltd. · 1997