C03B 37/012
Manufacture of preforms for drawing fibres or filaments
C03B37/012 (Manufacture of preforms for drawing fibres or filaments) appears on 2,399 US grants and 1,929 published applications in this corpus.
Search patents in C03B- Granted patents
- 2,399
- Published applications
- 1,929
- Assignees
- 539
- Inventors
- 3,385
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 12 | 0 |
| 1978 | 20 | 0 |
| 1979 | 24 | 0 |
| 1980 | 51 | 0 |
| 1981 | 42 | 0 |
| 1982 | 41 | 0 |
| 1983 | 46 | 0 |
| 1984 | 33 | 0 |
| 1985 | 41 | 0 |
| 1986 | 44 | 0 |
| 1987 | 58 | 0 |
| 1988 | 48 | 0 |
| 1989 | 63 | 0 |
| 1990 | 41 | 0 |
| 1991 | 29 | 0 |
| 1992 | 49 | 0 |
| 1993 | 49 | 0 |
| 1994 | 43 | 0 |
| 1995 | 17 | 0 |
| 1996 | 22 | 0 |
| 1997 | 39 | 0 |
| 1998 | 43 | 0 |
| 1999 | 46 | 0 |
| 2000 | 51 | 0 |
| 2001 | 57 | 24 |
| 2002 | 78 | 133 |
| 2003 | 82 | 135 |
| 2004 | 98 | 138 |
| 2005 | 69 | 135 |
| 2006 | 71 | 94 |
| 2007 | 37 | 90 |
| 2008 | 40 | 65 |
| 2009 | 29 | 62 |
| 2010 | 61 | 67 |
| 2011 | 54 | 60 |
| 2012 | 46 | 70 |
| 2013 | 53 | 66 |
| 2014 | 68 | 55 |
| 2015 | 48 | 59 |
| 2016 | 62 | 62 |
| 2017 | 56 | 55 |
| 2018 | 39 | 50 |
| 2019 | 37 | 75 |
| 2020 | 42 | 81 |
| 2021 | 50 | 58 |
| 2022 | 55 | 70 |
| 2023 | 61 | 61 |
| 2024 | 48 | 60 |
| 2025 | 54 | 53 |
| 2026 | 32 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hollow core optical fibers and methods of making6 Oct 2026US 12,753,108 B2Corning Incorporated
- Optical fiber preform production method, optical fiber preform, and optical fiber production method29 Sep 2026US 12,747,183 B2Fujikura Ltd.
- Hollow-core optical fibers22 Sep 2026US 12,742,925 B2Corning Incorporated
- Process of making multi-core fiber preform by integrating core rods and cladding cylinder15 Sep 2026US 12,735,344 B2Heraeus Quartz North America LLC
- Anti-resonant optical component and method for the production of same8 Sep 2026US 12,730,258 B2Heraeus Quarzglas GmbH & Co.KG
- Method of manufacturing an optical fiber preform using air flow to remove debris generated during laser welding and system for performing the method1 Oct 2026US 2026/0296947 A1Corning Incorporated
- Hollow-core preforms and hollow-core optical fibers and methods of making the same1 Oct 2026US 2026/0296948 A1Corning Incorporated
- Laser welded glass article and method of manufacturing the same using a welding emission with beam waist separated from interface between glass components to be laser welded17 Sep 2026US 2026/0274735 A1Corning Incorporated
- Fiber preform with laser weld volume including ultraviolet absorbing constituent and method of manufacturing the same17 Sep 2026US 2026/0274736 A1Corning Incorporated
- Manufacturing method of optical fiber preform, and optical fiber preform10 Sep 2026US 2026/0265113 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Multicore optical fibre354US 6,301,420 B1The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 2001
- Method and apparatus for supplying gaseous raw material349US 5,540,059 AShin-Etsu Quartz Products Co., Ltd. · 1996
- Article comprising a micro-structured optical fiber, and method of making such fiber283US 5,802,236 ALucent Technologies Inc. · 1998
- Method of manufacturing fluorine-doped optical fibers270US 4,468,413 AU. S. Philips Corporation · 1984
- Multi-core optical fiber and method of manufacturing the same245US 8,737,793 B2Furukawa Electric Co., Ltd. · 2014