B28B 21/22
Using rotatable mould or core parts
Official title: using rotatable mould or core parts
B28B21/22 (Using rotatable mould or core parts) appears on 67 US grants and 26 published applications in this corpus.
Search patents in B28B- Granted patents
- 67
- Published applications
- 26
- Assignees
- 44
- Inventors
- 92
- Latest grant
- 28 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 3 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Composition and method for making geopolymer tubes28 Jun 2022US 11,370,705 B2Novoreach Technologies LLC
- Method of impregnating a fiber texture of hollow shape14 Sep 2021US 11,117,287 B2Safran Aircraft Engines
- Method of fabricating an impregnated fiber assembly17 Nov 2020US 10,836,072 B2Safran Aircraft Engines
- Manufacturing apparatus and method of forming a preform15 Mar 2016US 9,283,734 B2Gunite Corporation
- Concrete roller head17 Mar 2015US 8,979,520 B2Hawkeye Concrete Products Co.
- Composition and method for making geopolymer tubes1 Apr 2021US 2021/0094877 A1Novoreach Technologies LLC
- Hollow cylinder of ceramic material, a method for the production thereof and use thereof29 Aug 2019US 2019/0263703 A1Qsil GmbH Quarzschmelze Ilmenau
- Method of fabricating an impregnated fiber assembly4 Oct 2018US 2018/0281228 A1Safran Aircraft Engines
- Drain Pipe and Manufacturing Method Therefor17 May 2018US 2018/0134618 A1
- A method of impregnating a fiber texture of hollow shape10 May 2018US 2018/0126591 A1Safran Aircraft Engines
Most cited
By later US patents
- Machine and method for making concrete product17US 4,340,553 AHydrotile Machinery Company · 1982
- Packerhead pipe making machine16US 4,118,165 AHydrotile Canada Limited · 1978
- Method of making prestressed concrete poles, tubes, and support columns15US 4,247,516 ATop Roc Precast Corporation · 1981
- Concrete pipe making machine15US 4,957,424 AHydrotile Machinery Company · 1990
- Apparatus for forming concrete pipe of uniform density including control means to vary feed rate of concrete/aggregate as function of packerhead torque12US 4,406,605 AKerr Concrete Pipe Company · 1983