C21D 9/06
With diminished tendency to become wavy
Official title: with diminished tendency to become wavy
C21D9/06 (With diminished tendency to become wavy) appears on 22 US grants and 11 published applications in this corpus.
Search patents in C21D- Granted patents
- 22
- Published applications
- 11
- Assignees
- 19
- Inventors
- 51
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 3 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for producing rail11 Feb 2025US 12,221,660 B2Jfe Steel Corporation
- Handling machine for rails and handling process associated thereto22 Nov 2016US 9,499,874 B2Danieli & C. Officine Meccaniche SpA
- Cooling system and cooling method of rolling steel9 Feb 2016US 9,255,304 B2Nippon Steel & Sumitomo Metal Corporation
- Manufacture of coil springs12 Aug 2014US 8,800,338 B2Springform Technology Limited
- Cooling system and cooling method of rolling steel6 May 2014US 8,715,565 B2Nippon Steel & Sumitomo Metal Corporation
- Method for producing rail25 Aug 2022US 2022/0267870 A1Jfe Steel Corporation
- Cooling system and cooling method of rolling steel31 Jul 2014US 2014/0208780 A1Nippon Steel & Sumitomo Metal Corporation
- Handling maschine for rails and handling process associated thereto9 Feb 2012US 2012/0034053 A1Danieli & C. Officne Meccanche S.P.A.
- Handling machine for handling rails and handling process thereof10 Nov 2011US 2011/0272867 A1Danieli & C. Officine Meccaniche SpA
- Manufacture of coil springs13 Oct 2011US 2011/0247383 A1Springform Technology Limited
Most cited
By later US patents
- Method and apparatus for heat treating and straightening structural members12US 5,885,522 AMidland Steel Products Co. · 1999
- Method for heat treating rail10US 4,749,419 A1988
- Process and device for hardening a rail10US 6,432,230 B1Voest-Alpine Schienen GmbH · 2002
- Method of cooling sectional girders8US 6,059,903 ASMS Schloemann-Siemag Aktiengesellschaft · 2000
- Method and apparatus for heat treating and straightening structural members6US 5,968,293 AMidland Steel Products Co. · 1999