B29C 44/0423
By density separation
Official title: {by density separation}
B29C44/0423 (By density separation) appears on 19 US grants and 9 published applications in this corpus.
Search patents in B29C- Granted patents
- 19
- Published applications
- 9
- Assignees
- 17
- Inventors
- 33
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Resin-based compositions for slush molding and composite parts manufactured therefrom1 Jul 2025US 12,343,906 B2CpK Interior Products Inc.
- Soundproof member and production method thereof30 Apr 2024US 11,970,120 B1Inoac Corporation
- Thermoset porous composites and methods thereof29 Mar 2022US 11,285,643 B2Universite Laval
- Method for producing three dimensional foam articles9 Jun 2020US 10,675,792 B2
- Optical element, light-emitting device, lighting device, and method for manufacturing optical element5 Sep 2017US 9,751,267 B2Semiconductor Energy Laboratory Co.Ltd.
- Resin-based compositions for slush molding and composite parts manufactured therefrom19 Sep 2024US 2024/0308116 A1CpK Interior Products Inc.
- Soundproof member and production method thereof9 May 2024US 2024/0149801 A1Inoac Corporation
- Thermoset porous composites and methods thereof25 Nov 2021US 2021/0362383 A1Universite Laval
- Method of making mattress core with individual foam columns and no springs.24 Oct 2019US 2019/0320811 A1
- Method for producing three dimensional foam articles13 Jul 2017US 2017/0197342 A1Zotefoams PLC
Most cited
By later US patents
- Method of rotational molding29US 3,984,511 ADart Industries Inc. · 1976
- Rotational moulding process28US 6,180,203 B22001
- Spin casting apparatus for manufacturing an item from polyurethane foam26US 5,906,836 AAmerican Mobility Limited Partnership · 1999
- Method of producing composite foamed shaped articles from thermoplastic resins19US 3,962,390 ASekisui Kagaku Kogyo Kabushiki Kaisha · 1976
- Method for making polyurethane tires with an outer skin18US 4,855,096 A1989