B01J 21/185
Carbon nanotubes
Official title: {Carbon nanotubes (carbon nanotubes per se C01B32/15)}
B01J21/185 (Carbon nanotubes) appears on 327 US grants and 490 published applications in this corpus.
Search patents in B01J- Granted patents
- 327
- Published applications
- 490
- Assignees
- 288
- Inventors
- 1,165
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 13 |
| 2003 | 0 | 4 |
| 2004 | 4 | 6 |
| 2005 | 7 | 14 |
| 2006 | 12 | 20 |
| 2007 | 6 | 16 |
| 2008 | 6 | 24 |
| 2009 | 13 | 28 |
| 2010 | 15 | 39 |
| 2011 | 18 | 20 |
| 2012 | 13 | 33 |
| 2013 | 13 | 20 |
| 2014 | 22 | 26 |
| 2015 | 22 | 30 |
| 2016 | 17 | 18 |
| 2017 | 19 | 16 |
| 2018 | 15 | 21 |
| 2019 | 20 | 21 |
| 2020 | 17 | 35 |
| 2021 | 19 | 22 |
| 2022 | 16 | 21 |
| 2023 | 19 | 12 |
| 2024 | 17 | 14 |
| 2025 | 11 | 14 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and compositions for production of CO2-free hydrogen and carbon nanomaterials by methane decomposition4 Aug 2026US 12,697,607 B2Battelle Memorial Institute
- Modified copper-zinc catalysts and methods for alcohol production from carbon dioxide16 Jun 2026US 12,654,157 B2Air Company Holdings, Inc.
- Apparatus and method for producing carbon nanofibers from light hydrocarbons19 May 2026US 12,630,428 B2Carbonova Corp.
- Fabrication of carbon-based nanostructures on metallic substrates, including aluminum-containing substrates25 Nov 2025US 12,479,728 B2Massachusetts Institute of Technology
- Electrode catalyst layer for carbon dioxide electrolysis cell, electrolysis cell and carbon dioxide electrolysis apparatus comprising the same28 Oct 2025US 12,454,764 B2Kabushiki Kaisha Toshiba
- Heterogeneous catalyst with dual catalytic centers, and preparation method and use thereof27 Aug 2026US 2026/0249279 A1China Petroleum & Chemical Corporation
- Carbon nanotube-porphyrin photocatalysts16 Jul 2026US 2026/0199888 A1
- Plasma-catalytic reforming of methane and hydrogen sulfide into hydrogen and poly carbon subsulfide using non-thermal plasma and supported nanocatalysts23 Apr 2026US 2026/0109599 A1Gerad Tech.
- Method for ammonia decomposition using carbon material supported metal catalyst25 Dec 2025US 2025/0387779 A1King Abdullah University of Science and Technology
- Method for preparing supported transition metal catalyst, supported transition metal catalyst and use thereof in condensation coupling synthesis of high-carbon ketone from alpha-h-containing ketone and alcohol25 Dec 2025US 2025/0387780 A1Zhejiang Sainon Chemical Co., Ltd
Most cited
By later US patents
- Method of producing carbon nanotubes254US 6,333,016 B1The Board of Regents of the University of Oklahoma · 2001
- Carbon fibers formed from single-wall carbon nanotubes204US 6,683,783 B1William Marsh Rice University · 2004
- Methods for producing composites of single-wall carbon nanotubes and compositions thereof161US 7,105,596 B2William Marsh Rice University · 2006
- Continuous fiber of single-wall carbon nanotubes154US 6,979,709 B2William Marsh Rice University · 2005
- Rigid porous carbon structures, methods of making, methods of using and products containing same143US 6,099,965 AHyperion Catalysis International, Inc. · 2000