C03B 37/01228
Removal of preform material
Official title: {Removal of preform material (C03B37/01251 takes precedence)}
C03B37/01228 (Removal of preform material) appears on 193 US grants and 206 published applications in this corpus.
Search patents in C03B- Granted patents
- 193
- Published applications
- 206
- Assignees
- 87
- Inventors
- 482
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 5 |
| 2002 | 9 | 18 |
| 2003 | 11 | 7 |
| 2004 | 7 | 19 |
| 2005 | 11 | 12 |
| 2006 | 8 | 10 |
| 2007 | 4 | 4 |
| 2008 | 6 | 1 |
| 2009 | 3 | 4 |
| 2010 | 3 | 3 |
| 2011 | 3 | 6 |
| 2012 | 5 | 11 |
| 2013 | 4 | 3 |
| 2014 | 2 | 0 |
| 2015 | 4 | 8 |
| 2016 | 5 | 7 |
| 2017 | 7 | 11 |
| 2018 | 6 | 5 |
| 2019 | 6 | 9 |
| 2020 | 7 | 10 |
| 2021 | 4 | 7 |
| 2022 | 6 | 9 |
| 2023 | 6 | 11 |
| 2024 | 8 | 6 |
| 2025 | 12 | 10 |
| 2026 | 4 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process of making multi-core fiber preform by integrating core rods and cladding cylinder15 Sep 2026US 12,735,344 B2Heraeus Quartz North America LLC
- Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method11 Aug 2026US 12,704,672 B2Sumitomo Electric Industries, Ltd.
- Method for processing glass filament10 Feb 2026US 12,545,617 B2Microsoft Technology Licensing, LLC
- Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre6 Jan 2026US 12,515,979 B2J-Fiber GmbH
- Multicore fiber, manufacturing method for multicore fiber, multicore fiber preform, and manufacturing method for multicore fiber preform25 Nov 2025US 12,481,097 B2Furukawa Electric Co., Ltd.
- Anti-resonant hollow core optical fiber with contacting cladding elements with multiply nested capillaries27 Aug 2026US 2026/0251841 A1Corning Incorporated
- Methods of Pedestal Shaping in Optical Fibers and Related Structures30 Jul 2026US 2026/0217589 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Method of Preparation of a Multicore Fiber Preform18 Jun 2026US 2026/0167550 A1Heraeus Quartz North America LLC
- Method for producing a preform for an optical fiber18 Jun 2026US 2026/0167551 A1
- Method for machining a preform blank, preform, and device18 Jun 2026US 2026/0167552 A1
Most cited
By later US patents
- Cladding-pumped fiber structure101US 5,966,491 ALucent Technologies Inc. · 1999
- High-strength optical preforms and fibers with thin, high-compression outer layers71US 4,243,298 AInternational Telephone and Telegraph Corporation · 1981
- Microstructured optical fiber with improved transmission efficiency and durability63US 6,418,258 B1Gazillion Bits, Inc. · 2002
- Method for making optical fibers with variations in core diameter54US 4,049,413 ABell Telephone Laboratories, Incorporated · 1977
- Optical fiber51US 7,116,887 B2Nufern · 2006