B22F 9/023
Hydrogen absorption
Official title: {Hydrogen absorption}
B22F9/023 (Hydrogen absorption) appears on 177 US grants and 170 published applications in this corpus.
Search patents in B22F- Granted patents
- 177
- Published applications
- 170
- Assignees
- 133
- Inventors
- 557
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 8 | 5 |
| 2003 | 5 | 7 |
| 2004 | 6 | 4 |
| 2005 | 3 | 3 |
| 2006 | 2 | 1 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 3 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 4 |
| 2012 | 2 | 6 |
| 2013 | 5 | 7 |
| 2014 | 1 | 10 |
| 2015 | 4 | 4 |
| 2016 | 7 | 11 |
| 2017 | 5 | 8 |
| 2018 | 3 | 8 |
| 2019 | 9 | 4 |
| 2020 | 8 | 3 |
| 2021 | 1 | 8 |
| 2022 | 2 | 7 |
| 2023 | 7 | 10 |
| 2024 | 8 | 31 |
| 2025 | 2 | 11 |
| 2026 | 5 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Samarium-iron-nitrogen based magnet powder and samarium-iron-nitrogen based magnet1 Sep 2026US 12,725,721 B2National Institute of Advanced Industrial Science and Technology
- R-T-B based permanent magnet7 Jul 2026US 12,676,254 B2TDK Corporation
- R-T-B based permanent magnet7 Jul 2026US 12,676,255 B2TDK Corporation
- Neodymium-iron-boron magnetic material, preparation method therefor and application thereof28 Apr 2026US 12,614,652 B2FUJIAN GOLDEN DRAGON RARE-EARTH Co., Ltd.
- R-T-B-based permanent magnet and method for producing same, motor, and automobile10 Feb 2026US 12,548,700 B2TDK Corporation
- Method for producing r-t-q system sintered magnet13 Aug 2026US 2026/0237544 A1Proterial, Ltd.
- Kiln exhaust gas regeneration apparatus and system, and kiln system16 Jul 2026US 2026/0199824 A1TDK Corporation
- Ndfeb magnet and preparation method2 Jul 2026US 2026/0188545 A1Beijing Zhong Ke San Huan Hi-Tech Co., Ltd.
- Metal powder composite for additive manufacturing and method for manufacturing the same11 Jun 2026US 2026/0158547 A1University-Industry Cooperation Group of Kyung Hee University
- R-t-b based permanent magnet and method of manufacturing the same28 May 2026US 2026/0148884 A1TDK Corporation
Most cited
By later US patents
- Compositionally graded amorphous metal alloys and process for the synthesis of same120US 4,859,413 AThe Standard Oil Company · 1989
- Thin film solar cell including a spatially modulated intrinsic layer119US 4,816,082 AEnergy Conversion Devices, Inc. · 1989
- Method for deoxidizing tantalum material93US 4,722,756 ACabot Corporation · 1988
- Metal powders produced by the reduction of the oxides with gaseous magnesium62US 6,558,447 B1H. C. Starck GmbH · 2003
- Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet59US 5,383,978 ASantoku Metal Industry Co., Ltd. · 1995