B01J 19/20
In the form of helices
Official title: in the form of helices, e.g. screw reactors
B01J19/20 (In the form of helices) appears on 357 US grants and 318 published applications in this corpus.
Search patents in B01J- Granted patents
- 357
- Published applications
- 318
- Assignees
- 291
- Inventors
- 1,026
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 2 |
| 2002 | 8 | 3 |
| 2003 | 1 | 3 |
| 2004 | 2 | 4 |
| 2005 | 2 | 9 |
| 2006 | 5 | 7 |
| 2007 | 6 | 13 |
| 2008 | 0 | 10 |
| 2009 | 6 | 14 |
| 2010 | 8 | 20 |
| 2011 | 8 | 19 |
| 2012 | 14 | 12 |
| 2013 | 9 | 17 |
| 2014 | 15 | 15 |
| 2015 | 15 | 15 |
| 2016 | 18 | 9 |
| 2017 | 6 | 5 |
| 2018 | 5 | 10 |
| 2019 | 11 | 10 |
| 2020 | 12 | 17 |
| 2021 | 13 | 21 |
| 2022 | 13 | 16 |
| 2023 | 12 | 17 |
| 2024 | 14 | 16 |
| 2025 | 12 | 20 |
| 2026 | 5 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for de-vulcanisation of rubber8 Sep 2026US 12,729,281 B2Electronic Systems S.P.A.
- Device for pretreating refined cotton and method of use of same16 Jun 2026US 12,655,232 B2Hubei Jinhanjiang Refined Cotton Co., Ltd.
- Autonomous device for in-field conversion of biomass into biochar24 Mar 2026US 12,583,802 B2Applied Carbon, Inc.
- Pre-hydrolysis pressure vessel system comprising a cleaning arrangement3 Mar 2026US 12,564,824 B2Valmet Corporation
- High-viscosity PETG or PCTG polymerization reactor and method for polymerizing PETG or PCTG13 Jan 2026US 12,522,694 B1Guowang High-Tech Fiber (Suqian) Co., Ltd.
- Reaction apparatus and reactor17 Sep 2026US 2026/0273498 A1The Japan Steel Works, Ltd.
- System to convert cellulosic materials into sugar and method of using the same3 Sep 2026US 2026/0257187 A1Alliance Bioenergy Plus, Inc., Dba Blue Biofuels
- Reaction apparatus3 Sep 2026US 2026/0257191 A1The Japan Steel Works, Ltd.
- Apparatus and method for gas flow carbonization of energetic materials13 Aug 2026US 2026/0233189 A1Rikomay Recycling Singapore Pte. Ltd.
- Rapid mixing polymerization process6 Aug 2026US 2026/0226210 A1Borealis AG
Most cited
By later US patents
- Method for continuous production of cross-linked polymer157US 4,625,001 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1986
- Method for continuously producing cross-linked fine-particle geleous polymerizates87US 6,710,141 B1BASF SE · 2004
- Gas-liquid mixing80US 4,900,480 AUnion Carbide Corporation · 1990
- Method for production of particulate hydrogel polymer and absorbent resin80US 5,250,640 ANippon Shokubai Co., Ltd. · 1993
- Multi-shaft thin-layer reactor73US 5,108,711 AHermann Berstorff Maschinenbau GmbH · 1992