C03B 37/01242
Controlling or regulating the down-draw process
Official title: {Controlling or regulating the down-draw process}
C03B37/01242 (Controlling or regulating the down-draw process) appears on 31 US grants and 40 published applications in this corpus.
Search patents in C03B- Granted patents
- 31
- Published applications
- 40
- Assignees
- 17
- Inventors
- 80
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 3 |
| 2011 | 4 | 1 |
| 2012 | 0 | 4 |
| 2013 | 0 | 1 |
| 2014 | 3 | 2 |
| 2015 | 2 | 6 |
| 2016 | 1 | 0 |
| 2017 | 3 | 2 |
| 2018 | 3 | 1 |
| 2019 | 4 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 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 optical fiber manufacturing apparatus3 Mar 2026US 12,565,441 B2Fujikura Ltd.
- Method for preform or tube drawing based on its viscosity27 Sep 2022US 11,454,580 B2Heraeus Quartz North America LLC
- Low-latency, hollow-core optical fiber with total internal reflection mode confinement17 Sep 2019US 10,416,376 B2Raytheon Company
- Method for producing a substrate tube of quartz glass18 Jun 2019US 10,322,962 B2Heraeus Quarzglas GmbH & Co.KG
- Hollow core optical fibre drawing method with modified drawdown22 Jan 2026US 2026/0022052 A1University of Southampton
- Method for producing a preform for a hollow-core fiber11 Dec 2025US 2025/0376406 A1
- Reduction of multi-core fiber preform geometric distortion6 Nov 2025US 2025/0340477 A1Heraeus Quartz North America LLC
- Optical fiber manufacturing method and optical fiber manufacturing apparatus11 Jul 2024US 2024/0228359 A1Fujikura Ltd.
- Methods for producing a hollow-core fiber and for producing a preform for a hollow-core fiber4 Aug 2022US 2022/0242773 A1Heraeus Quarzglas GmbH & Co.KG
Most cited
By later US patents
- Process for drawing glass fiber using prediction of future geometric parameter of the fiber21US 6,098,428 AHeraeus Quarzglas GmbH & Co.KG · 2000
- Vertical drawing method for producing a cylindrical glass body and device for carrying out said method18US 7,891,213 B2Heraeus Quarzglas GmbH & Co.KG · 2011
- Method controlling the draw rate in the drawing of a glass feedstock17US 5,314,517 ACorning Incorporated · 1994
- Method of making a dispersion-managed optical fiber with varying the feed rates of an RIT process9US 6,301,934 B1Corning Incorporated · 2001
- Glass tube processing method, apparatus and glass tube5US 7,637,125 B2Sumitomo Electric Industries, Ltd. · 2009