G02B 6/4488
Using metallic tubes
Official title: {using metallic tubes}
G02B6/4488 (Using metallic tubes) appears on 178 US grants and 114 published applications in this corpus.
Search patents in G02B- Granted patents
- 178
- Published applications
- 114
- Assignees
- 76
- Inventors
- 294
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 1 |
| 2002 | 2 | 3 |
| 2003 | 2 | 1 |
| 2004 | 4 | 5 |
| 2005 | 1 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 1 |
| 2008 | 3 | 3 |
| 2009 | 1 | 2 |
| 2010 | 2 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 1 |
| 2013 | 0 | 7 |
| 2014 | 4 | 0 |
| 2015 | 6 | 13 |
| 2016 | 8 | 3 |
| 2017 | 6 | 4 |
| 2018 | 3 | 6 |
| 2019 | 11 | 13 |
| 2020 | 9 | 8 |
| 2021 | 7 | 4 |
| 2022 | 3 | 10 |
| 2023 | 10 | 7 |
| 2024 | 5 | 5 |
| 2025 | 5 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical fiber cable with welded armor layer8 Sep 2026US 12,730,276 B2Corning Research & Development Corporation
- Downhole fiber optic cable designed with improved strain response and designed for long life in the well7 Apr 2026US 12,596,235 B2Halliburton Energy Services.Inc.
- Steel fiber composite intelligent bar with sheathing optical cable embedded in inner core of rebar, and fabrication method thereof4 Nov 2025US 12,461,326 B2Shenzhen University
- Method for the continuous production of optical fibre waveguides mounted in a thin-walled, radially closed metal tube1 Jul 2025US 12,343,815 B2Nexans
- Cable and cable reinforcement sheet24 Jun 2025US 12,339,509 B2Fujikura Ltd.
- Downhole fiber optic cable designed with improved strain response and designed for long life in the well30 Jul 2026US 2026/0219467 A1Halliburton Energy Services.Inc.
- Control line conditioning for fiber optics16 Apr 2026US 2026/0104566 A1
- Multi-metal conductor undersea cable and method of manufacture22 Jan 2026US 2026/0023236 A1Subcom, LLC
- Armored Optical Fiber Cable20 Nov 2025US 2025/0355206 A1
- Armored Optical Fiber Cable With Easy Access20 Nov 2025US 2025/0355207 A1Sterlite Technologies Limited
Most cited
By later US patents
- Optical waveguide with protective tube231US 6,246,821 B1Alcatel · 2001
- Method for manufacturing an optical waveguide cable element65US 5,263,239 AKabelmetal Electro GmbH · 1993
- Optical fiber cable having fiber in metal tube core with outer protective layer62US 6,404,961 B1Weatherford/Lamb, Inc. · 2002
- Active cable for wellbore heating and distributed temperature sensing58US 7,730,936 B2Schlumberger Technology Corporation · 2010
- Optical fiber cable for underwater use using terrestrial optical fiber cable57US 5,896,482 ALucent Technologies Inc. · 1999