B01D 2252/2028
Polypropylene glycol, ethers or esters thereof
B01D2252/2028 (Polypropylene glycol, ethers or esters thereof) appears on 28 US grants and 36 published applications in this corpus.
Search patents in B01D- Granted patents
- 28
- Published applications
- 36
- Assignees
- 32
- Inventors
- 98
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 4 |
| 2017 | 3 | 3 |
| 2018 | 5 | 5 |
| 2019 | 4 | 0 |
| 2020 | 3 | 3 |
| 2021 | 0 | 3 |
| 2022 | 0 | 3 |
| 2023 | 4 | 3 |
| 2024 | 5 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for exhaust gas pollution reduction12 May 2026US 12,623,185 B2Mercury Capture Intellectual Property, LLC
- Process and apparatus for treating methane-containing gas4 Nov 2025US 12,458,918 B2Kanadevia Inova AG
- System for reducing voc and nitrogen oxide and method for reducing same17 Sep 2024US 12,092,010 B2Korea Research Institute of Chemical Technology
- Smoke capturing system and method23 Apr 2024US 11,964,228 B2
- System for reducing VOC and nitrogen oxide and method for reducing same23 Apr 2024US 11,965,446 B2Korea Research Institute of Chemical Technology
- Apparatus and method for exhaust gas pollution reduction17 Sep 2026US 2026/0273462 A1Mercury Capture Intellectual Property, LLC
- Acidic gas-absorbing liquid and acidic gas reduction method30 Apr 2026US 2026/0115649 A1AGC Inc.
- Acidic gas removal agent, acidic gas removal method, acidic gas absorption device, and cleaning device2 Oct 2025US 2025/0303354 A1AGC Inc.
- Process and apparatus for treating methane-containing gas21 Aug 2025US 2025/0262588 A1Kanadevia Inova AG
- System for reducing voc and nitrogen oxide and method for reducing same30 Nov 2023US 2023/0383680 A1Korea Research Institute of Chemical Technology
Most cited
By later US patents
- Systems and methods for utilizing turbine systems within gas processing systems36US 9,764,272 B2Energy Recovery, Inc. · 2017
- Process to remove product alcohol from a fermentation by vaporization under vacuum17US 8,628,643 B2Butamax Advanced Biofuels LLC · 2014
- Carbon dioxide capture3US 11,571,658 B2Saudi Arabian Oil Company · 2023
- Carbon dioxide absorbent comprising triamine1US 10,099,172 B2University-Industry Cooperation Group of Kyung Hee University · 2018
- Method and device for stripping a gas from a gas mixture using a venturi ejector1US 10,173,165 B2Atlas Copco Airpower, Naamloze Vennootschap · 2019