C04B 35/20
Rich in magnesium oxide
Official title: rich in magnesium oxide {, e.g. forsterite (C04B35/195 takes precedence)}
C04B35/20 (Rich in magnesium oxide) appears on 166 US grants and 167 published applications in this corpus.
Search patents in C04B- Granted patents
- 166
- Published applications
- 167
- Assignees
- 121
- Inventors
- 454
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 2 | 7 |
| 2004 | 4 | 7 |
| 2005 | 6 | 3 |
| 2006 | 2 | 8 |
| 2007 | 7 | 7 |
| 2008 | 6 | 5 |
| 2009 | 4 | 7 |
| 2010 | 7 | 11 |
| 2011 | 1 | 8 |
| 2012 | 7 | 7 |
| 2013 | 8 | 8 |
| 2014 | 8 | 13 |
| 2015 | 11 | 4 |
| 2016 | 8 | 7 |
| 2017 | 6 | 9 |
| 2018 | 9 | 6 |
| 2019 | 6 | 5 |
| 2020 | 4 | 7 |
| 2021 | 1 | 5 |
| 2022 | 5 | 9 |
| 2023 | 3 | 8 |
| 2024 | 2 | 1 |
| 2025 | 3 | 6 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Insulating die plate, forging press and ceramic insulating body28 Apr 2026US 12,611,707 B2SMS group GmbH
- Process for the preparation of up-conversion phosphors14 Apr 2026US 12,600,905 B2Evonik Operations GmbH
- Method of making negative electrode material17 Feb 2026US 12,555,774 B2OSAKA Titanium technologies Co., Ltd.
- Additive manufacturing powders with improved physical characteristics, method of manufacture and use thereof13 Jan 2026US 12,521,789 B2Tekna Plasma Systems Inc.
- Cold-setting dry vibratable mix8 Jul 2025US 12,351,519 B2Intocast AG Feuerfest-Produkte Und Giesslfsmittel
- Castable refractory compositions and manufacturing methods24 Sep 2026US 2026/0285763 A1Calderys France
- Additive manufacturing powders with improved physical characteristics, method of manufacture and use thereof13 Aug 2026US 2026/0233302 A1Tekna Plasma Systems Inc.
- Slag blocking device for a metallurgical vessel23 Jul 2026US 2026/0208261 A1Refractory Intellectual Property GmbH & Co.KG
- Low-temperature fired ceramic and electronic component21 May 2026US 2026/0138926 A1Murata Manufacturing Co., Ltd.
- Method of making negative electrode material26 Mar 2026US 2026/0088279 A1OSAKA Titanium technologies Co., Ltd.
Most cited
By later US patents
- Long persistent phosphors and persistent energy transfer technique225US 6,953,536 B2University of Georgia Research Foundation, Inc. · 2005
- Tunable dielectric compositions including low loss glass184US 6,905,989 B2Paratek Microwave, Inc. · 2005
- Glass ceramic composition83US 6,939,819 B2Asahi Glass Company, Limited · 2005
- .beta.-quartz-based glass-ceramics47US 6,124,223 ACorning Incorporated · 2000
- Biomedical material36US 5,032,552 ATDK Corporation · 1991