C21D 2211/003
Cementite
C21D2211/003 (Cementite) appears on 232 US grants and 286 published applications in this corpus.
Search patents in C21D- Granted patents
- 232
- Published applications
- 286
- Assignees
- 94
- Inventors
- 695
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 1 |
| 2003 | 9 | 9 |
| 2004 | 6 | 8 |
| 2005 | 2 | 6 |
| 2006 | 1 | 2 |
| 2007 | 7 | 3 |
| 2008 | 1 | 5 |
| 2009 | 1 | 1 |
| 2010 | 5 | 6 |
| 2011 | 4 | 4 |
| 2012 | 4 | 4 |
| 2013 | 1 | 10 |
| 2014 | 5 | 9 |
| 2015 | 5 | 14 |
| 2016 | 4 | 14 |
| 2017 | 11 | 24 |
| 2018 | 8 | 14 |
| 2019 | 23 | 14 |
| 2020 | 14 | 19 |
| 2021 | 9 | 15 |
| 2022 | 15 | 27 |
| 2023 | 16 | 28 |
| 2024 | 23 | 16 |
| 2025 | 18 | 14 |
| 2026 | 11 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel sheet with excellent phosphatability and manufacturing method therefor6 Oct 2026US 12,753,458 B2Posco
- Method of producing a steel sheet for cans6 Oct 2026US 12,753,472 B2Jfe Steel Corporation
- High-strength cold-rolled steel sheet, hot-dipped galvanized steel sheet, alloyed hot-dipped galvanized steel sheet, and methods for producing of these7 Jul 2026US 12,674,216 B2Kobe Steel, Ltd.
- High strength and high formability steel sheet and manufacturing method26 May 2026US 12,637,732 B2ArcelorMittal
- Anti-collapse oil casing with high strength and manufacturing method therefor5 May 2026US 12,617,007 B2Baoshan Iron & Steel Co., Ltd.
- High-strength cold-rolled steel sheet, hot-dipped galvanized steel sheet, alloyed hot-dipped galvanized steel sheet, and methods for producing of these24 Sep 2026US 2026/0286456 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- High-strength economical high-carbon steel wire rod and manufacturing method therefor17 Sep 2026US 2026/0275471 A1Baoshan Iron & Steel Co., Ltd.
- Cold-rolled steel sheet, stamping member, and manufacturing method for cold-rolled steel sheet17 Sep 2026US 2026/0275475 A1Baoshan Iron & Steel Co., Ltd.
- Method for Producing a Rail for Railway Infrastructure10 Sep 2026US 2026/0265854 A1voestalpine Rail Technology GmbH
- Cold-rolled steel sheet with excellent weldability and method for manufacturing same3 Sep 2026US 2026/0258533 A1Posco
Most cited
By later US patents
- Corrosion and wear resistant alloy88US 6,702,905 B1L. E. Jones Company · 2004
- High toughness low yield ratio, high fatigue strength steel plate and process of producing same65US 5,454,883 ANippon Steel Corporation · 1995
- Toothed wheel for use in automobiles and its manufacturing method42US 5,310,432 AKubota Iron Works Co., Ltd. · 1994
- Heat resistant steel36US 6,514,359 B2Sumitomo Metal Industries, Ltd. · 2003
- Steel sheet and method for manufacturing the same33US 6,767,417 B2NKK Corporation · 2004