C03B 2205/70
Draw furnace insulation
C03B2205/70 (Draw furnace insulation) appears on 22 US grants and 11 published applications in this corpus.
Search patents in C03B- Granted patents
- 22
- Published applications
- 11
- Assignees
- 16
- Inventors
- 63
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Inductive furnace with rotating susceptor for high precision waveguide glass draw23 Dec 2025US 12,503,386 B2Heraeus Quartz North America LLC
- Seal structure of wire drawing furnace for optical fiber, and production method for optical fiber23 Dec 2025US 12,503,387 B2Sumitomo Electric Industries, Ltd.
- Optical fiber draw furnace system and method21 Nov 2023US 11,820,696 B2Corning Incorporated
- Optical fiber draw furnace system and method15 Nov 2022US 11,498,862 B2Corning Incorporated
- Optical fiber producing method and apparatus and optical fiber25 Oct 2016US 9,475,722 B2Sumitomo Electric Industries, Ltd.
- Apparatuses and methods for processing optical fiber21 Dec 2023US 2023/0406752 A1Corning Incorporated
- Inductive furnace with rotating susceptor for high precision waveguide glass draw22 Jun 2023US 2023/0192526 A1Heraeus Quartz North America LLC
- Optical fiber draw furnace system and method16 Feb 2023US 2023/0047162 A1Corning Incorporated
- Seal structure of wire drawing furnace for optical fiber, and production method for optical fiber27 Jan 2022US 2022/0024800 A1Sumitomo Electric Industries, Ltd.
- Optical fiber draw furnace system and method29 Jul 2021US 2021/0230044 A1Corning Incorporated
Most cited
By later US patents
- Non-contacting seal for treating chamber through which elongated material is moved25US 4,174,842 AWestern Electric Company, Inc. · 1979
- Zirconia induction furnace24US 4,450,333 AAT&T Technologies, Inc. · 1984
- Method and apparatus for contaminant removal in manufacturing optical fibre21US 4,988,374 AStc PLC · 1991
- Method of and apparatus for manufacturing optical fibres16US 4,309,201 AU. S. Philips Corporation · 1982
- Modified zirconia induction furnace15US 4,608,473 AAT&T Technologies, Inc. · 1986