C03B 2205/47
Shaping the preform draw bulb before or during drawing
C03B2205/47 (Shaping the preform draw bulb before or during drawing) appears on 21 US grants and 32 published applications in this corpus.
Search patents in C03B- Granted patents
- 21
- Published applications
- 32
- Assignees
- 13
- Inventors
- 80
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 0 | 1 |
| 2002 | 1 | 6 |
| 2003 | 2 | 1 |
| 2004 | 3 | 3 |
| 2005 | 2 | 4 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 3 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 2 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Optical fiber glass preform and method for drawing optical fiber glass preform12 May 2026US 12,623,948 B2Shin-Etsu Chemical Co., Ltd.
- Optical fiber manufacturing method and apparatus10 Mar 2026US 12,570,566 B2Furukawa Electric Co., Ltd.
- Elongating method and elongating apparatus for glass base material20 Aug 2024US 12,065,373 B2Shin-Etsu Chemical Co., Ltd.
- Method for fabrication of sleeveless photonic crystal canes with an arbitrary shape17 Oct 2023US 11,787,727 B2Lawrence Livermore National Security, LLC
- Method of forming conical shape on glass rod, and glass rod15 Jun 2021US 11,034,608 B2Shin-Etsu Chemical Co., Ltd.
- Method for measuring twist of optical fiber and method for manufacturing optical fiber11 Jun 2026US 2026/0160641 A1Sumitomo Electric Industries, Ltd.
- Optical fiber manufacturing method and apparatus6 Jul 2023US 2023/0212057 A1Furukawa Electric Co., Ltd.
- Method for automatically processing conical tip of optical fiber preform8 Jun 2023US 2023/0174407 A1Jiangsu Etern Company Limited
- Elongating method and elongating apparatus for glass base material4 Aug 2022US 2022/0242772 A1Shin-Etsu Chemical Co., Ltd.
- Optical fiber glass preform and method for drawing optical fiber glass preform24 Feb 2022US 2022/0055939 A1Shin-Etsu Chemical Co., Ltd.
Most cited
By later US patents
- Optical fiber manufacture method including elongating a preform in a vertical direction and a horizontal direction18US 6,386,001 B1Shin-Etsu Chemical Co., Ltd. · 2002
- Straightening a glass rod for use in making an optical fiber preform10US 6,742,363 B1Shin-Etsu Chemical Co., Ltd. · 2004
- Single mode optical fiber, method of manufacturing the same, and apparatus for manufacturing the same10US 6,954,572 B2Furukawa Electric Co., Ltd. · 2005
- Method of manufacturing single mode optical fiber7US 8,020,411 B2Furukawa Electric Co., Ltd. · 2011
- Method for pregobbing an optical fiber preform and system producing optical fiber therefrom6US 6,779,363 B1Corning Incorporated · 2004