C03B 2201/02
Pure silica glass
Official title: Pure silica glass, e.g. pure fused quartz
C03B2201/02 (Pure silica glass) appears on 280 US grants and 271 published applications in this corpus.
Search patents in C03B- Granted patents
- 280
- Published applications
- 271
- Assignees
- 122
- Inventors
- 711
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 9 | 5 |
| 2003 | 9 | 13 |
| 2004 | 9 | 17 |
| 2005 | 7 | 21 |
| 2006 | 6 | 18 |
| 2007 | 3 | 8 |
| 2008 | 9 | 16 |
| 2009 | 9 | 8 |
| 2010 | 8 | 13 |
| 2011 | 11 | 8 |
| 2012 | 13 | 11 |
| 2013 | 8 | 8 |
| 2014 | 5 | 11 |
| 2015 | 7 | 14 |
| 2016 | 14 | 12 |
| 2017 | 7 | 11 |
| 2018 | 7 | 9 |
| 2019 | 7 | 16 |
| 2020 | 8 | 9 |
| 2021 | 4 | 7 |
| 2022 | 11 | 15 |
| 2023 | 9 | 2 |
| 2024 | 10 | 11 |
| 2025 | 6 | 6 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Opaque quartz glass and method for producing the same6 Oct 2026US 12,753,112 B2Tosoh Sgm Corporation
- Large-sized hollow porous quartz glass preform and method of manufacturing the same28 Jul 2026US 12,692,184 B2Shin-Etsu Quartz Products Co., Ltd.
- Molded body made of opaque quartz glass and method for producing same14 Jul 2026US 12,679,756 B2Heraeus Quarzglas GmbH & Co.KG
- Fabricating method for quartz vial30 Sep 2025US 12,428,196 B2Nexus Company Inc.
- Optical sensor and method of fabricating the optical sensor23 Sep 2025US 12,422,358 B2King Fahd University of Petroleum and Minerals
- Expanding tip plugs and method of using and making the same28 May 2026US 2026/0145984 A1Corning Incorporated
- 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.
- Manufacturing method of optical fiber preform, optical fiber preform, and optical fiber3 Jul 2025US 2025/0214880 A1Shin-Etsu Chemical Co., Ltd.
- Optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof26 Jun 2025US 2025/0208338 A1Nkt Photonics A/S
Most cited
By later US patents
- Method of making fused silica by decomposing siloxanes106US 5,043,002 ACorning Incorporated · 1991
- Microstructured optical fibers and methods105US 7,450,806 B2Corning Incorporated · 2008
- Low viscosity core glass optical fiber71US 4,413,882 ACorning Glass Works · 1983
- Method of making fused silica70US 5,152,819 ACorning Incorporated · 1992
- Optical fiber with irregularities at cladding boundary69US 6,411,762 B1Scientific-Atlanta, Inc. · 2002