C21D 1/58
Oils
C21D1/58 (Oils) appears on 94 US grants and 160 published applications in this corpus.
Search patents in C21D- Granted patents
- 94
- Published applications
- 160
- Assignees
- 97
- Inventors
- 386
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 5 |
| 2004 | 4 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 4 |
| 2010 | 2 | 5 |
| 2011 | 2 | 4 |
| 2012 | 3 | 2 |
| 2013 | 2 | 4 |
| 2014 | 2 | 4 |
| 2015 | 3 | 5 |
| 2016 | 5 | 15 |
| 2017 | 4 | 11 |
| 2018 | 9 | 8 |
| 2019 | 9 | 11 |
| 2020 | 4 | 6 |
| 2021 | 5 | 13 |
| 2022 | 3 | 12 |
| 2023 | 4 | 7 |
| 2024 | 3 | 18 |
| 2025 | 10 | 12 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbide refining method of high-carbon high-alloy steel29 Sep 2026US 12,747,488 B2Shanghai Jiaotong University
- Steel with controlled yield ratio and manufacturing method therefor5 May 2026US 12,618,129 B2Baoshan Iron & Steel Co., Ltd.
- High-strength wire rod having high hydrogen embrittlement resistance for cold heading, and method for manufacturing the same17 Mar 2026US 12,577,632 B2Posco
- Heat treatment oil24 Feb 2026US 12,559,693 B2Idemitsu Kosan Co., Ltd.
- High-carbon bearing steel and preparation method thereof27 Jan 2026US 12,534,771 B2Central Iron and Steel Research Institute
- Heat treatment methods for multiphase superalloys24 Sep 2026US 2026/0286454 A1General Electric Company
- High-strength wire rod having high hydrogen embrittlement resistance for cold heading, and method for manufacturing the same23 Jul 2026US 2026/0209882 A1Posco
- Vacuum carburizing furnace and vacuum carburizing treatment method21 May 2026US 2026/0139353 A1Dowa Thermotech Co., Ltd.
- Rolling Bearing and Rolling Element Production Method5 Mar 2026US 2026/0063171 A1Nsk Ltd.
- Method for producing and preparing steel bar for automotive bushings by means of ecological and economical arc furnace5 Feb 2026US 2026/0035775 A1Bengang Steel Plates Co., Ltd.
Most cited
By later US patents
- Integrally bladed rotor airfoil fabrication and repair techniques53US 6,536,110 B2United Technologies Corporation · 2003
- High strength low alloyed sintered steel19US 8,702,835 B2HöGanäS AB (Publ) · 2014
- System and method of making a cast part13US 9,669,459 B2Ford Motor Company · 2017
- Integrally bladed rotor airfoil fabrication and repair techniques11US 6,787,740 B2United Technologies Corporation · 2004
- Eglin steel—a low alloy high strength composition10US 7,537,727 B2Ellwood National Forge Company · 2009