B28B 21/52
Methods or machines specially adapted for the production of tubular articles: by
Official title: by extruding
B28B21/52 (Methods or machines specially adapted for the production of tubular articles: by) appears on 12 US grants and 9 published applications in this corpus.
Search patents in B28B- Granted patents
- 12
- Published applications
- 9
- Assignees
- 17
- Inventors
- 40
- Latest grant
- 9 Jun 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method of predicting formed body density and method of manufacturing ceramic fired body9 Jun 2020US 10,677,702 B2NGK Insulators, Ltd.
- Green ceramic tapes and method for their fabrication1 Aug 2017US 9,718,993 B2Keranor AS
- Manufacturing apparatus and method of forming a preform15 Mar 2016US 9,283,734 B2Gunite Corporation
- Nozzle member and process for producing the same14 Oct 2014US 8,858,864 B2Hokuriku Seikei Industrial Co., Ltd.
- Process for the production of piping made of a cementitious material having a circular section6 Dec 2011US 8,070,997 B2Italcementi S.P A.
- Air-heating type heat not burn heating device, ceramic heating element and preparation method thereof24 Feb 2022US 2022/0053830 A1Xiamen Fengtao Ceramics Co., Ltd.
- Method of predicting formed body density and method of manufacturing ceramic fired body5 Oct 2017US 2017/0284917 A1NGK Insulators, Ltd.
- Green Ceramic Tapes and Method for Their Fabrication14 May 2015US 2015/0132549 A1Keranor AS
- Large-sized ceramic plate with less warpage22 Aug 2013US 2013/0216781 A1Toto Ltd.
- Manufacturing Apparatus And Method Of Forming A Preform19 Jul 2012US 2012/0183707 A1Gunite Corporation
Most cited
By later US patents
- Process for manufacturing ceramic tubes18US 5,227,105 AThe Carborundum Company · 1993
- Green ceramic tapes and method for their fabrication15US 9,718,993 B2Keranor AS · 2017
- Extrusion arrangement9US 6,190,595 B1DaimlerChrysler AG · 2001
- Process for the continuous production of pipe from particulate materials8US 4,685,873 AOwens-Corning Fiberglas Corporation · 1987
- Process and device for producing components and semifinished products from synthetic graphite or ceramic granules, in particular for producing graphite tubes6US 6,905,644 B1Sgl Carbon SE · 2005