H01M 8/021
Alloys based on iron
H01M8/021 (Alloys based on iron) appears on 472 US grants and 662 published applications in this corpus.
Search patents in H01M- Granted patents
- 472
- Published applications
- 662
- Assignees
- 272
- Inventors
- 1,365
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 0 |
| 2002 | 7 | 13 |
| 2003 | 6 | 22 |
| 2004 | 15 | 23 |
| 2005 | 8 | 38 |
| 2006 | 10 | 41 |
| 2007 | 7 | 43 |
| 2008 | 11 | 36 |
| 2009 | 12 | 38 |
| 2010 | 30 | 39 |
| 2011 | 30 | 24 |
| 2012 | 32 | 17 |
| 2013 | 22 | 18 |
| 2014 | 27 | 22 |
| 2015 | 18 | 19 |
| 2016 | 19 | 18 |
| 2017 | 15 | 23 |
| 2018 | 16 | 23 |
| 2019 | 17 | 27 |
| 2020 | 20 | 24 |
| 2021 | 25 | 26 |
| 2022 | 19 | 17 |
| 2023 | 20 | 27 |
| 2024 | 15 | 40 |
| 2025 | 10 | 22 |
| 2026 | 16 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell interconnect alloyed with transition metal element and method of making thereof8 Sep 2026US 12,731,795 B2Bloom Energy Corporation
- Stainless steel for separation plate of polymer electrolyte membrane fuel cell having improved hydrophilic property and corrosion resistance, and manufacturing method therefor25 Aug 2026US 12,719,063 B2Posco
- Method for manufacturing an electrical conductor, such as a current rod, for a high-temperature electrochemical device11 Aug 2026US 12,706,315 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Part coated with a carbon-based layer4 Aug 2026US 12,698,556 B2Hydromecanique Et Frottement
- Stainless steel having excellent surface electrical conductivity for fuel cell separator and manufacturing method therefor4 Aug 2026US 12,700,597 B2Posco
- Stainless steel for fuel cell separator8 Oct 2026US 2026/0312081 A1Posco
- Metal separator10 Sep 2026US 2026/0269279 A1Hyundai Steel Company
- Asynchronous conversion of metals to metal ceramics20 Aug 2026US 2026/0246080 A1Intalus, Inc.
- Asynchronous conversion of metals to metal ceramics20 Aug 2026US 2026/0246081 A1Intalus, Inc.
- Asynchronous conversion of metals to metal ceramics20 Aug 2026US 2026/0246082 A1Intalus, Inc.
Most cited
By later US patents
- Fuel cell interconnect device108US 5,942,349 ACeramic Fuel Cells Limited · 1999
- Plastic platelet fuel cells employing integrated fluid management91US 5,863,671 AH Power Corporation · 1999
- Metal platelet fuel cells production and operation methods80US 5,683,828 AH Power Corporation · 1997
- Electrochemical cell provided with ion exchange membranes and bipolar metal plates78US 5,578,388 ADe Nora Permelec Ltd · 1996
- Fuel cells employing integrated fluid management platelet technology78US 5,858,567 AH Power Corporation · 1999