F23G 2205/121
Screw conveyor
F23G2205/121 (Screw conveyor) appears on 125 US grants and 97 published applications in this corpus.
Search patents in F23G- Granted patents
- 125
- Published applications
- 97
- Assignees
- 89
- Inventors
- 265
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 5 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 6 |
| 2011 | 1 | 5 |
| 2012 | 4 | 2 |
| 2013 | 2 | 3 |
| 2014 | 2 | 8 |
| 2015 | 4 | 2 |
| 2016 | 1 | 4 |
| 2017 | 3 | 2 |
| 2018 | 4 | 3 |
| 2019 | 2 | 4 |
| 2020 | 2 | 14 |
| 2021 | 8 | 6 |
| 2022 | 9 | 14 |
| 2023 | 8 | 4 |
| 2024 | 6 | 7 |
| 2025 | 1 | 3 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biochar production plant, a combustion chamber and a method of operating the combustion chamber25 Aug 2026US 12,716,584 B2
- Char collector18 Aug 2026US 12,710,174 B2Scanship AS
- Feeder and method for feeding raw material comprising plastic21 Apr 2026US 12,607,350 B2Teknologian tutkimuskeskus VTT Oy
- Pellet grills27 Jan 2026US 12,535,219 B2
- Combustion system for solid biomass fuel13 Jan 2026US 12,523,372 B2Colorado State University Research Foundation
- Waste incineration facility19 Mar 2026US 2026/0078900 A1Shimose Microbes Laboratory Corporation
- A rotary reactor for pyrolysis and torrefaction2 Oct 2025US 2025/0305675 A1Goenvi Technologies Private Limited
- Boiler device and organic waste treatment device provided with same2 Oct 2025US 2025/0305676 A1Shimose Microbes Laboratory Corporation
- Combustion chamber for pellet grills2 Jan 2025US 2025/0003595 A1
- Thermochemical system and method24 Oct 2024US 2024/0353099 A1
Most cited
By later US patents
- Method for destroying and/or inerting waste77US 6,857,999 B2Saint-Gobain Glass France · 2005
- Treatment of oil field wastes69US 4,751,887 AEnvironmental Pyrogenics Services, Inc. · 1988
- Controlled clean-emission biomass gasification heating system/method66US 5,279,234 AChiptec Wood Energy Systems · 1994
- Oxygen-enriched gas burner for incinerating waste materials46US 5,724,901 AGaz Metropolitan and Company Limited · 1998
- Drummed waste incineration43US 4,958,578 APhillips Petroleum Company · 1990