B21H 3/12
Articles with helicoidal surface
Official title: articles with helicoidal surface (bending strip or the like helically B21D11/06)
B21H3/12 (Articles with helicoidal surface) appears on 4 US grants and 4 published applications in this corpus.
Search patents in B21H- Granted patents
- 4
- Published applications
- 4
- Assignees
- 3
- Inventors
- 6
- Latest grant
- 10 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Reel blade and manufacturing method10 May 2022US 11,324,163 B2The Toro Company
- Screw conveyors, augers, and flighting for use therein23 Jun 2015US 9,061,345 B2Lenham Machinery Limited
- Flighting for a conveyor and apparatus for producing such flighting6 Dec 2011US 8,069,973 B2Uniflyte, Inc.
- Screw conveyors, augers and flighting for use therein21 Oct 1997US 5,678,440 ALenham Machinery Limited
- Reel Blade And Manufacturing Method16 Apr 2020US 2020/0113132 A1The Toro Company
- Screw Conveyors, Augers, and Flighting for Use Therein16 Oct 2014US 2014/0305262 A1Lenham Machinery Limited
- Device for rolling an eccentric rotational component, rolling machine, method, and eccentric rotational component2 Aug 2012US 2012/0196092 A1
- Flighting for a conveyor and apparatus for producing such flighting10 Nov 2011US 2011/0272252 A1Uniflyte, Inc.
Most cited
By later US patents
- Screw conveyors, augers and flighting for use therein5US 5,678,440 ALenham Machinery Limited · 1997
- Flighting for a conveyor and apparatus for producing such flighting2US 8,069,973 B2Uniflyte, Inc. · 2011
- Screw conveyors, augers, and flighting for use therein1US 9,061,345 B2Lenham Machinery Limited · 2015