C02F 2101/105
Phosphorus compounds
Official title: {Phosphorus compounds}
C02F2101/105 (Phosphorus compounds) appears on 674 US grants and 1,075 published applications in this corpus.
Search patents in C02F- Granted patents
- 674
- Published applications
- 1,075
- Assignees
- 624
- Inventors
- 2,324
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 6 | 8 |
| 2003 | 8 | 23 |
| 2004 | 13 | 16 |
| 2005 | 12 | 26 |
| 2006 | 9 | 17 |
| 2007 | 13 | 20 |
| 2008 | 13 | 28 |
| 2009 | 16 | 34 |
| 2010 | 19 | 33 |
| 2011 | 20 | 28 |
| 2012 | 24 | 27 |
| 2013 | 14 | 41 |
| 2014 | 18 | 31 |
| 2015 | 19 | 57 |
| 2016 | 22 | 50 |
| 2017 | 25 | 52 |
| 2018 | 31 | 48 |
| 2019 | 45 | 60 |
| 2020 | 47 | 71 |
| 2021 | 44 | 85 |
| 2022 | 56 | 76 |
| 2023 | 39 | 75 |
| 2024 | 63 | 62 |
| 2025 | 56 | 63 |
| 2026 | 24 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for leachate biodegradation through aquatic microorganism digestion6 Oct 2026US 12,753,098 B1
- Electrochemical nitrogen and phosphorus removal device and method29 Sep 2026US 12,747,176 B2Beijing Drainage Group Co., Ltd
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Process for controlled adsorption and desorption of phosphate from liquids using phosphate-selective proteins1 Sep 2026US 12,722,987 B2Marquette University
- Resin for removing phosphorus from water body, and preparation method therefor and application thereof25 Aug 2026US 12,715,791 B2Sunresin New Materials Co. Ltd.
- Operation method of water treatment apparatus and water treatment apparatus8 Oct 2026US 2026/0308031 A1Kubota Corporation
- Method for Treating Phosphorus-Containing Wastewater Produced During Preparation of Sulfonamide Compound8 Oct 2026US 2026/0308035 A1Nanhai Beisha Pharmaceutical Co., Ltd.
- Method for the treatment of complex waste24 Sep 2026US 2026/0285732 A1Suez International
- Filtering System for a Storm Water Catch Basin17 Sep 2026US 2026/0274709 A1Trash Guard Incorporated
- Active Material For Use In Single Stage Wastewater Treatment3 Sep 2026US 2026/0257947 A1
Most cited
By later US patents
- Method and system for purifying liquid88US 3,985,648 AAlmag Pollution Control Corporation · 1976
- Water treatment techniques61US 8,071,055 B2Blue Water Technologies, Inc. · 2011
- Method for removing arsenic or selenium from an aqueous solution containing a substantial background of another contaminant60US 4,935,146 AAluminum Company of America · 1990
- Method for purifying aqueous solutions56US 4,566,975 ABoliden Aktiebolag · 1986
- Wastewater treatment system55US 6,893,567 B1North Carolina State University · 2005