C04B 2235/5284
Hollow fibers
Official title: Hollow fibers, e.g. nanotubes
C04B2235/5284 (Hollow fibers) appears on 301 US grants and 443 published applications in this corpus.
Search patents in C04B- Granted patents
- 301
- Published applications
- 443
- Assignees
- 259
- Inventors
- 978
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 8 |
| 2003 | 5 | 15 |
| 2004 | 6 | 16 |
| 2005 | 11 | 15 |
| 2006 | 2 | 28 |
| 2007 | 6 | 17 |
| 2008 | 9 | 26 |
| 2009 | 5 | 21 |
| 2010 | 15 | 18 |
| 2011 | 14 | 25 |
| 2012 | 12 | 30 |
| 2013 | 16 | 28 |
| 2014 | 26 | 16 |
| 2015 | 14 | 18 |
| 2016 | 22 | 17 |
| 2017 | 16 | 21 |
| 2018 | 16 | 18 |
| 2019 | 13 | 25 |
| 2020 | 12 | 18 |
| 2021 | 19 | 13 |
| 2022 | 11 | 10 |
| 2023 | 10 | 17 |
| 2024 | 14 | 9 |
| 2025 | 9 | 8 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polymer-derived ceramic reinforced with boron nitride1 Sep 2026US 12,723,006 B2North Carolina State University
- Particle enhancement of ceramic matrix composites, method of manufacture thereof and articles comprising the same2 Jun 2026US 12,643,829 B2Rtx Corporation
- Liquid absorbing body21 Apr 2026US 12,605,692 B2Mitsubishi Pencil Company, Limited
- Halloysite powder10 Feb 2026US 12,545,590 B2Jfe Mineral Company, Ltd.
- High temperature composites and methods for preparing high temperature composites16 Dec 2025US 12,497,335 B2Arkema France
- Ultra-high-temperature ceramic (uhtc)-containing coatings and methods of depositing the same10 Sep 2026US 2026/0265150 A1The Florida International University Board of Trustees
- Fabrication of ceramic matrix composites13 Aug 2026US 2026/0234069 A1Rtx Corporation
- Slurry infiltration of sacrificial material23 Jul 2026US 2026/0209127 A1Rtx Corporation
- Printable paste, printed thin film, manufacturing method, temperature sensor, inrush current limiter, use of the printed thin film in an electrical component21 May 2026US 2026/0139147 A1Att Advanced Thermal Technologies GmbH
- Self-limiting thick film positive temperature coefficient of resistivity (ptcr) resistor compositions26 Feb 2026US 2026/0059614 A1Data Coating Technologies Ltd.
Most cited
By later US patents
- Carbon fibrils, method for producing same and compositions containing same361US 4,663,230 AHyperion Catalysis International, Inc. · 1987
- Nanotube fiber reinforced composite materials and method of producing fiber reinforced composites261US 6,934,600 B2Auburn University · 2005
- Carbon fibrils and method for producing same250US 5,165,909 AHyperion Catalysis Int'l., Inc. · 1992
- Process for the preparation of nanostructured materials191US 7,056,455 B2Carnegie Mellon University · 2006
- Rigid porous carbon structures, methods of making, methods of using and products containing same143US 6,099,965 AHyperion Catalysis International, Inc. · 2000