B01J 2220/4881
Residues from shells
Official title: Residues from shells, e.g. eggshells, mollusk shells
B01J2220/4881 (Residues from shells) appears on 20 US grants and 29 published applications in this corpus.
Search patents in B01J- Granted patents
- 20
- Published applications
- 29
- Assignees
- 22
- Inventors
- 64
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 5 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 3 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 4 |
| 2024 | 3 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adsorbent mixture for depleting antibiotics, pathogens, and heavy metals10 Mar 2026US 12,569,826 B2Foundation for Neglected Disease Research
- Iron and nitrogen treated sorbent and method for making same20 Aug 2024US 12,064,745 B2Calgon Carbon Corporation
- Copper, iron, and nitrogen treated sorbent and method for making same13 Aug 2024US 12,059,668 B2Calgon Carbon Corporation
- Preparation method and application of scallop shell extract efficient adsorbent16 Jan 2024US 11,872,538 B2Shandong University
- Preparation method of La(OH)3 nanorod coated walnut shell biochar composite25 Apr 2023US 11,633,711 B2Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs
- Carbonaceous material and method for producing same, and fluorine-containing organic compound removing material, water purification filter, and water purifier7 Dec 2023US 2023/0390731 A1Kuraray Co., Ltd.
- Preparation method and application of scallop shell extract efficient adsorbent24 Aug 2023US 2023/0264173 A1Shandong University
- Adsorbent mixture for depleting antibiotics, pathogens, and heavy metals3 Aug 2023US 2023/0241578 A1Foundation for Neglected Disease Research
- Removal of silica and total organic carbon from wastewater27 Apr 2023US 2023/0129802 A1UTI Limited Partnership
- Iron and nitrogen treated sorbent and method for making same3 Mar 2022US 2022/0062855 A1Calgon Carbon Corporation
Most cited
By later US patents
- Process for adsorption of mercury from gaseous streams54US 6,524,371 B2Merck & Co., Inc. · 2003
- Carbon-based adsorption powder containing cupric chloride54US 6,638,347 B2Merck & Co., Inc. · 2003
- Adsorption powder containing cupric chloride39US 6,841,513 B2Merck & Co., Inc. · 2005
- Absorbent granular product16US 5,888,345 AMarcal Paper Mills, Inc. · 1999
- Method of adsorbing metals and organic compounds from vaporous streams12US 6,558,642 B2Merck & Co., Inc. · 2003