C21D 8/10
During manufacturing of tubular bodies
Official title: during manufacturing of tubular bodies
C21D8/10 (During manufacturing of tubular bodies) appears on 600 US grants and 791 published applications in this corpus.
Search patents in C21D- Granted patents
- 600
- Published applications
- 791
- Assignees
- 245
- Inventors
- 1,437
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 10 |
| 2003 | 9 | 20 |
| 2004 | 10 | 11 |
| 2005 | 8 | 13 |
| 2006 | 3 | 9 |
| 2007 | 2 | 13 |
| 2008 | 7 | 18 |
| 2009 | 5 | 21 |
| 2010 | 12 | 26 |
| 2011 | 14 | 21 |
| 2012 | 18 | 30 |
| 2013 | 14 | 24 |
| 2014 | 24 | 24 |
| 2015 | 23 | 34 |
| 2016 | 11 | 35 |
| 2017 | 29 | 40 |
| 2018 | 18 | 53 |
| 2019 | 39 | 61 |
| 2020 | 32 | 40 |
| 2021 | 37 | 53 |
| 2022 | 56 | 52 |
| 2023 | 28 | 54 |
| 2024 | 34 | 48 |
| 2025 | 52 | 43 |
| 2026 | 26 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of producing a steel sheet for cans6 Oct 2026US 12,753,472 B2Jfe Steel Corporation
- High-strength stainless steel seamless pipe for oil country tubular goods and method for manufacturing same22 Sep 2026US 12,742,221 B2Jfe Steel Corporation
- Method of forming and heat treating coiled tubing22 Sep 2026US 12,742,232 B2Tenaris Coiled Tubes, LLC
- Martensitic stainless steel seamless pipe15 Sep 2026US 12,735,779 B2Nippon Steel Corporation
- Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product11 Aug 2026US 12,703,021 B2Benteler Steel/Tube GmbH
- Production and preparation method of carburized gear shaft bars by means of converter process24 Sep 2026US 2026/0286458 A1Bengang Steel Plates Co., Ltd.
- Steel material17 Sep 2026US 2026/0275472 A1Nippon Steel Corporation
- Duplex stainless steel pipe10 Sep 2026US 2026/0265894 A1Nippon Steel Corporation
- A bainite seamless steel pipe and manufacturing method therefor3 Sep 2026US 2026/0258534 A1Baoshan Iron & Steel Co., Ltd.
- High strength steel plate for hydrogen transport steel pipe, method for manufacturing high strength steel plate, and steel pipe for transporting hydrogen27 Aug 2026US 2026/0250816 A1Jfe Steel Corporation
Most cited
By later US patents
- Multilayer composite tubular structure and method of making381US 5,858,556 AUti Inc. · 1999
- High toughness steel material and method of producing steel pipes using same72US 6,958,099 B2Sumitomo Metal Industries, Ltd. · 2005
- Metallic vacuum double-walled container53US 5,573,140 ANippon Sanso Corporation · 1996
- Austenitic stainless steel tube excellent in steam oxidation resistance and a manufacturing method thereof47US 7,014,720 B2Sumitomo Metal Industries, Ltd. · 2006
- Method of producing high strength steel pipe40US 4,018,634 AGrotnes Machine Works, Inc. · 1977