C03B 37/01231
To form a longitudinal hole
Official title: {to form a longitudinal hole, e.g. by drilling}
C03B37/01231 (To form a longitudinal hole) appears on 60 US grants and 84 published applications in this corpus.
Search patents in C03B- Granted patents
- 60
- Published applications
- 84
- Assignees
- 31
- Inventors
- 187
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 9 |
| 2003 | 6 | 3 |
| 2004 | 5 | 6 |
| 2005 | 4 | 4 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 4 |
| 2016 | 1 | 1 |
| 2017 | 2 | 3 |
| 2018 | 1 | 3 |
| 2019 | 2 | 4 |
| 2020 | 3 | 5 |
| 2021 | 1 | 2 |
| 2022 | 3 | 5 |
| 2023 | 4 | 4 |
| 2024 | 2 | 5 |
| 2025 | 6 | 9 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method for producing a preform of an anti-resonant hollow-core fiber30 Sep 2025US 12,428,332 B2Heraeus Quarzglas GmbH & Co.KG
- Anti-resonant hollow core optical fiber with contacting cladding elements with multiply nested capillaries27 Aug 2026US 2026/0251841 A1Corning Incorporated
- 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
- Rod insertion jig and method for producing multicore optical fiber base material11 Jun 2026US 2026/0159435 A1
Most cited
By later US patents
- Microstructured optical fiber with improved transmission efficiency and durability63US 6,418,258 B1Gazillion Bits, Inc. · 2002
- Optical fiber51US 7,116,887 B2Nufern · 2006
- Optical fiber having extended single-mode capability42US 6,614,974 B2Gazillion Bits, Inc. · 2003
- Method of assembling a fiber optic preform from discrete preformed elements38US 4,978,377 AAlcatel · 1990
- Optical fiber communications system using index-guiding microstructured optical fibers31US 6,671,442 B22003