B29B 2017/0237
Using density difference
Official title: {using density difference}
B29B2017/0237 (Using density difference) appears on 247 US grants and 252 published applications in this corpus.
Search patents in B29B- Granted patents
- 247
- Published applications
- 252
- Assignees
- 183
- Inventors
- 575
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 7 |
| 2003 | 6 | 7 |
| 2004 | 3 | 13 |
| 2005 | 5 | 7 |
| 2006 | 6 | 14 |
| 2007 | 9 | 8 |
| 2008 | 5 | 7 |
| 2009 | 4 | 4 |
| 2010 | 8 | 7 |
| 2011 | 7 | 10 |
| 2012 | 8 | 4 |
| 2013 | 7 | 8 |
| 2014 | 5 | 6 |
| 2015 | 6 | 1 |
| 2016 | 5 | 4 |
| 2017 | 3 | 6 |
| 2018 | 2 | 2 |
| 2019 | 3 | 5 |
| 2020 | 3 | 12 |
| 2021 | 7 | 13 |
| 2022 | 9 | 11 |
| 2023 | 12 | 23 |
| 2024 | 14 | 23 |
| 2025 | 11 | 29 |
| 2026 | 10 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Waste plastic density separation14 Jul 2026US 12,678,840 B2Eastman Chemical Company
- Automated process and method for material separation and recycling7 Jul 2026US 12,673,351 B2Republic Services Intellectual Property Holdings, Inc.
- Multilayer structure, and separation method and recycling method therefor16 Jun 2026US 12,654,430 B2Kuraray Co., Ltd.
- Methods for manufacturing bulked continuous filament from recycled pet9 Jun 2026US 12,649,261 B2Aladdin Manufacturing Corporation
- Method, process and system for recycling an asphalt-based roofing material12 May 2026US 12,624,184 B2Northstar Clean Technologies Inc.
- Method for recycling polyolefin containers10 Sep 2026US 2026/0264293 A1Alpla Werke Alwin Lehner GmbH & Co. KG
- Method for cleaning bulk material, and separating device13 Aug 2026US 2026/0233253 A1Wittmann Technology GmbH
- Method for the separation and recovery of plastics and contaminants through multi-stage separation process13 Aug 2026US 2026/0233268 A1
- System and method for the production of food-grade recycled polyolefins6 Aug 2026US 2026/0225285 A1
- Recyclate polyethylene composition with improved mechanical and optical properties30 Jul 2026US 2026/0217956 A1Borealis AG
Most cited
By later US patents
- Recycling system100US 5,143,308 APlastic Recycling Alliance, LP · 1992
- Plastics separation and recycling methods73US 4,830,188 ARutgers, The State University · 1989
- Recycling plastic coated paper product waste58US 5,084,135 AAdvanced Environmental Recycling Technologies, Inc. · 1992
- Method of recycling and granulating waste container made of resin materials57US 5,961,054 AEIN Engineering Co., Ltd. · 1999
- Process for reclaiming rubber, metal and fabric from whole tires55US 4,025,990 AAir Products and Chemicals, Inc. · 1977