C21D 9/0068
Heat treatment: for particular articles not mentioned below
Official title: {for particular articles not mentioned below}
C21D9/0068 (Heat treatment: for particular articles not mentioned below) appears on 922 US grants and 1,233 published applications in this corpus.
Search patents in C21D- Granted patents
- 922
- Published applications
- 1,233
- Assignees
- 596
- Inventors
- 2,976
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 14 | 0 |
| 2000 | 13 | 0 |
| 2001 | 13 | 2 |
| 2002 | 11 | 18 |
| 2003 | 17 | 18 |
| 2004 | 10 | 21 |
| 2005 | 12 | 19 |
| 2006 | 11 | 10 |
| 2007 | 10 | 16 |
| 2008 | 9 | 19 |
| 2009 | 13 | 26 |
| 2010 | 10 | 28 |
| 2011 | 17 | 38 |
| 2012 | 17 | 36 |
| 2013 | 22 | 57 |
| 2014 | 27 | 61 |
| 2015 | 27 | 75 |
| 2016 | 58 | 127 |
| 2017 | 44 | 100 |
| 2018 | 71 | 62 |
| 2019 | 81 | 65 |
| 2020 | 52 | 48 |
| 2021 | 55 | 65 |
| 2022 | 42 | 64 |
| 2023 | 50 | 79 |
| 2024 | 54 | 66 |
| 2025 | 44 | 65 |
| 2026 | 19 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bushingless track pin for a track type vehicle22 Sep 2026US 12,741,706 B2Caterpillar Inc.
- Spatially selective electromagnetic field assisted processing of bulk crystalline soft magnetic alloys18 Aug 2026US 12,709,780 B2University of Pittsburgh—Of the Commonwealth System of Higher Education
- Heat treatment method for amorphous alloy ribbon and heat treatment apparatus for amorphous alloy ribbon21 Jul 2026US 12,686,897 B2Proterial, Ltd.
- Production method of an aluminum alloy material suitable for use in the food industry14 Jul 2026US 12,680,148 B2
- Lightweight brake disc with maximized heat dissipation performance and manufacturing method thereof30 Jun 2026US 12,669,156 B2Pukyong National University Industry-University Cooperation Foundation
- Blank, production method for structural member and structural member8 Oct 2026US 2026/0307133 A1Nippon Steel Corporation
- Methods for enhancing strength of titanium alloys, golf club striking faces, and golf club heads24 Sep 2026US 2026/0284480 A1Acushnet Company
- Method for producing hot work tool steel, and hot work tool steel17 Sep 2026US 2026/0273613 A1Proterial, Ltd.
- Hot stamping component and manufacturing method therefor27 Aug 2026US 2026/0249342 A1Hyundai Steel Company
- Hot-stamped product and method of producing the same27 Aug 2026US 2026/0249343 A1Nippon Steel Corporation
Most cited
By later US patents
- Method for annealing stapler anvils1,469US 5,173,133 AUnited States Surgical Corporation · 1992
- Method of making iron golf clubs with flexible impact surface459US 4,398,965 APepsiCo, Inc. · 1983
- Method and system for selectively softening hot stamped parts by induction heating94US 10,308,992 B2Ford Motor Company · 2019
- Corrosion and wear resistant alloy88US 6,702,905 B1L. E. Jones Company · 2004
- Macro-fiber process for manufacturing a face for a metal wood golf club74US 6,663,501 B22003