C03C 2201/02
Pure silica glass
Official title: Pure silica glass, e.g. pure fused quartz
C03C2201/02 (Pure silica glass) appears on 115 US grants and 113 published applications in this corpus.
Search patents in C03C- Granted patents
- 115
- Published applications
- 113
- Assignees
- 68
- Inventors
- 366
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 4 |
| 2003 | 3 | 3 |
| 2004 | 2 | 4 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 4 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 4 |
| 2017 | 2 | 4 |
| 2018 | 3 | 6 |
| 2019 | 3 | 10 |
| 2020 | 6 | 12 |
| 2021 | 4 | 10 |
| 2022 | 8 | 10 |
| 2023 | 6 | 5 |
| 2024 | 11 | 15 |
| 2025 | 4 | 9 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Quartz glass crucible, manufacturing method thereof, and manufacturing method of silicon single crystal15 Sep 2026US 12,735,802 B2Sumco Corporation
- Glass fabric, prepreg, and printed circuit board9 Dec 2025US 12,495,492 B2Asahi Kasei Kabushiki Kaisha
- Low temperature co-fired substrate composition11 Nov 2025US 12,466,761 B2Okamoto Glass Co., Ltd.
- Manufacturing method of scintillator material and scintillator material26 Aug 2025US 12,399,288 B2Koito Manufacturing Co., Ltd.
- Quartz container manufacturing method and forming apparatus19 Aug 2025US 12,391,596 B2Longi Green Energy Technology Co., Ltd.
- Methods for producing glass strand and glass yarn28 May 2026US 2026/0145986 A1Shin-Etsu Chemical Co., Ltd.
- Silica glass porous body and manufacturing method therefor25 Dec 2025US 2025/0388508 A1AGC Inc.
- Glass cloth and method of manufacture20 Nov 2025US 2025/0353781 A1Shin-Etsu Chemical Co., Ltd.
- Optical fiber23 Oct 2025US 2025/0327969 A1Sumitomo Electric Industries, Ltd.
- Sinter-free low-temperature 3d-printing of nanoscale optical grade fused silica glass9 Oct 2025US 2025/0313502 A1The Regents of the University of California
Most cited
By later US patents
- Method of making optical waveguides86US 3,933,454 ACorning Glass Works · 1976
- Preparation of monolithic silica aerogels, the aerogels thus obtained and their use for the preparation of silica glass articles and of heat-insulating materials74US 4,432,956 ACorning France · 1984
- Method of making fused silica70US 5,152,819 ACorning Incorporated · 1992
- Fabrication of sintered high-silica glasses66US 4,419,115 ABell Telephone Laboratories, Incorporated · 1983
- Process for making non-porous micron-sized high purity silica52US 5,063,179 ACabot Corporation · 1991