B01J 31/068
Polyalkylene glycols
Official title: {Polyalkylene glycols}
B01J31/068 (Polyalkylene glycols) appears on 96 US grants and 67 published applications in this corpus.
Search patents in B01J- Granted patents
- 96
- Published applications
- 67
- Assignees
- 76
- Inventors
- 220
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 6 | 4 |
| 2003 | 3 | 3 |
| 2004 | 1 | 1 |
| 2005 | 2 | 5 |
| 2006 | 2 | 2 |
| 2007 | 0 | 5 |
| 2008 | 3 | 1 |
| 2009 | 2 | 2 |
| 2010 | 0 | 3 |
| 2011 | 5 | 3 |
| 2012 | 2 | 2 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 0 | 3 |
| 2017 | 3 | 4 |
| 2018 | 2 | 2 |
| 2019 | 1 | 3 |
| 2020 | 4 | 2 |
| 2021 | 2 | 5 |
| 2022 | 3 | 3 |
| 2023 | 2 | 5 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal-organic framework (MOF) MIL-125 and preparation method and use thereof25 Aug 2026US 12,714,989 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Method of preparing heterogeneous linear carbonate using amine-based compound catalyst12 May 2026US 12,623,995 B2Lotte Chemical Corporation
- Ceramic catalytic filter, filtering system including the same, and manufacturing method thereof10 Mar 2026US 12,569,830 B2Samsung Electronics Co., Ltd.
- Process for preparing double metal cyanide catalysts29 Jul 2025US 12,370,535 B2Covestro Deutschland AG
- Antifouling oligomerization catalyst systems17 Jun 2025US 12,331,004 B2Saudi Arabian Oil Company
- Process for preparing double metal cyanide catalysts27 Nov 2025US 2025/0360495 A1Covestro Deutschland AG
- Perfluorinated amide salts and their uses as ionic conducting materials1 Aug 2024US 2024/0253023 A1
- System and Method for Dual-Pathway System for Carbon Dioxide Capture from Ocean Water6 Jun 2024US 2024/0182340 A1California Institute of Technology
- Method of preparing heterogeneous linear carbonate using amine-based compound catalyst21 Dec 2023US 2023/0406809 A1Lotte Chemical Corporation
- Metal-organic framework (mof) mil-125 and preparation method and use thereof26 Oct 2023US 2023/0338935 A1Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Most cited
By later US patents
- Highly active double metal cyanide catalysts250US 5,482,908 AARCO Chemical Technology, L. P. · 1996
- Polyether-containing double metal cyanide catalysts103US 5,545,601 AARCO Chemical Technology, L. P. · 1996
- Highly active double metal cyanide catalysts73US 5,627,120 AARCO Chemical Technology, L. P. · 1997
- Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds69US 4,252,671 AXerox Corporation · 1981
- Process for the conversion of ethylene into but-1-ene using additives based on polymethylene glycols and derivatives thereof69US 5,792,895 AInstitut Francais du Petrole · 1998