C21D 9/34
Heat treatment: for tyres
Official title: for tyres; for rims
C21D9/34 (Heat treatment: for tyres) appears on 52 US grants and 63 published applications in this corpus.
Search patents in C21D- Granted patents
- 52
- Published applications
- 63
- Assignees
- 65
- Inventors
- 172
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 3 |
| 2003 | 4 | 1 |
| 2004 | 0 | 4 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 0 |
| 2017 | 2 | 4 |
| 2018 | 1 | 5 |
| 2019 | 2 | 8 |
| 2020 | 3 | 4 |
| 2021 | 2 | 1 |
| 2022 | 3 | 5 |
| 2023 | 2 | 6 |
| 2024 | 4 | 3 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Quenching a wheel comprising a hub15 Apr 2025US 12,275,274 B2Mubea Performance Wheels GmbH
- Spinning process of magnesium alloy wheel hub17 Sep 2024US 12,091,736 B2CITIC Dicastal Co., Ltd.
- Railway wheel30 Jul 2024US 12,049,102 B2Nippon Steel Corporation
- Method for manufacturing special vehicle wheels with 7000 series aluminum alloy14 May 2024US 11,981,985 B2CITIC Dicastal Co., Ltd.
- Railway wheel6 Feb 2024US 11,890,894 B2Nippon Steel Corporation
- Method and device for heating a vehicle wheel23 Oct 2025US 2025/0327145 A1Maschinenfabrik Alfing Kessler GmbH
- Quenching a wheel comprising a hub26 Jun 2025US 2025/0206063 A1Mubea Performance Wheels GmbH
- Non-pneumatic tire having curved spokes and method of making same30 Jan 2025US 2025/0033415 A1Bridgestone Americas Tire Operations, LLC
- Railway wheel5 Dec 2024US 2024/0399789 A1Nippon Steel Corporation
- Ultra-lightweight steel wheel for commercial vehicle15 Aug 2024US 2024/0270012 A1Thyssenkrupp Steel (Beijing) Co., Ltd.
Most cited
By later US patents
- Rotary forging and quenching apparatus and method48US 6,539,765 B22003
- Method for producing a cast aluminum vehicle wheel30US 5,340,418 AHayes Wheels International, Inc. · 1994
- Heat treatment devices and method of operation thereof to produce dual microstructure superalloy disks28US 6,660,110 B1The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2003
- Method for producing a cast aluminum vehicle wheel18US 5,336,344 AHayes Wheels International, Inc. · 1994
- Method for heat treating a metal component15US 5,536,337 AHayes Wheels International, Inc. · 1996