B21C 37/283
Making u-pieces
Official title: {Making U-pieces (B21C37/286 takes precedence)}
B21C37/283 (Making u-pieces) appears on 5 US grants and 3 published applications in this corpus.
Search patents in B21C- Granted patents
- 5
- Published applications
- 3
- Assignees
- 5
- Inventors
- 12
- Latest grant
- 1 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 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 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 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 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Bend pipe and method for manufacturing same1 Aug 2023US 11,712,727 B2Noritz Corporation
- Hydrostatically deforming a hollow body19 Apr 1994US 5,303,570 AHDE Metallwerk GmbH
- No-size squeezing of 180 degree boiler-tube return bends27 Nov 1979US 4,175,419 ACombustion Engineering, Inc.
- Forming die and process for tubular fittings5 Jun 1979US 4,157,024 AThe Babcock & Wilcox Company
- Return elbow and crossover bender25 Apr 1978US 4,085,608 ABurr Oak Tool & Gauge Company
Most cited
By later US patents
- Hydrostatically deforming a hollow body23US 5,303,570 AHDE Metallwerk GmbH · 1994
- Return elbow and crossover bender7US 4,085,608 ABurr Oak Tool & Gauge Company · 1978
- No-size squeezing of 180 degree boiler-tube return bends4US 4,175,419 ACombustion Engineering, Inc. · 1979
- Forming die and process for tubular fittings3US 4,157,024 AThe Babcock & Wilcox Company · 1979