B21B 2023/005
Roughening or texturig surfaces of tubes
Official title: {Roughening or texturig surfaces of tubes}
B21B2023/005 (Roughening or texturig surfaces of tubes) appears on 3 US grants and 4 published applications in this corpus.
Search patents in B21B- Granted patents
- 3
- Published applications
- 4
- Assignees
- 4
- Inventors
- 11
- Latest grant
- 10 Apr 2007
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for manufacturing seamless steel tube10 Apr 2007US 7,201,812 B2Sumitomo Metal Industries, Ltd.
- Method for producing seamless tube with grooved inner surface28 Dec 2004US 6,834,523 B2Kabushiki Kaisha Kobe Seiko Sho
- Method of making machine-engraved seamless tube12 Jul 1994US 5,328,587 AIR International, Inc.
- Method for manufacturing an aluminum tube26 Feb 2004US 2004/0035176 A1
- Method for manufacturing seamless steel tube23 Oct 2003US 2003/0196734 A1Sumitomo Metal Industries, Ltd.
- Method for producing seamless tube with groved inner surface2 Oct 2003US 2003/0182979 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Apparatus for producing internally grooved tube2 Oct 2003US 2003/0182980 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
Most cited
By later US patents
- Method of making machine-engraved seamless tube8US 5,328,587 AIR International, Inc. · 1994
- Method for producing seamless tube with grooved inner surface2US 6,834,523 B2Kabushiki Kaisha Kobe Seiko Sho · 2004
- Method for manufacturing seamless steel tube1US 7,201,812 B2Sumitomo Metal Industries, Ltd. · 2007