C09K 17/28
Urea-aldehyde condensation polymers
C09K17/28 (Urea-aldehyde condensation polymers) appears on 7 US grants and 4 published applications in this corpus.
Search patents in C09K- Granted patents
- 7
- Published applications
- 4
- Assignees
- 7
- Inventors
- 17
- Latest grant
- 15 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Water-absorbing and water-retaining multi-nutrient biodegradable polymeric slow/controlled release fertilizer having a semi-interpenetrating network structure15 Dec 2020US 10,865,161 B2North University of China
- Binder composition and method for treating particulate material19 May 2015US 9,034,228 B2Henri Arnold De Bruyn
- Method for binding non-solid oxidic inorganic materials with etherified aminoplast resins and cured compositions of said materials and etherified aminoplast resins25 Sep 2012US 8,273,691 B2BASF SE
- Method and composition for stabilizing soil and process for making the same20 Oct 1998US 5,824,725 AKing Fahd University of Petroleum and Minerals, Research Institute
- Method and composition for stabilizing soil and process for making the same23 Sep 1997US 5,670,567 AKing Fahd University of Petroleum and Minerals, Research Institute
- Biodegradable urea-formaldehyde-based sand-fixing polymer material with slow nutrient release and water absorption and retention20 Apr 2023US 2023/0123541 A1North University of China
- Water-absorbing and water-retaining multi-nutrient biodegradable polymeric slow/controlled release fertilizer having a semi-interpenetrating network structure31 Jan 2019US 2019/0031574 A1North University of China
- Method for binding non-solid oxidic inorganic materials with etherified aminoplast resins and cured compositions of said materials and etherified aminoplast resins23 Jun 2011US 2011/0152134 A1BASF SE
- Binder composition and method for treating particulate material16 Jun 2005US 2005/0127550 A1Henri Arnold De Bruyn
Most cited
By later US patents
- Method and composition for stabilizing soil and process for making the same36US 5,824,725 AKing Fahd University of Petroleum and Minerals, Research Institute · 1998
- Method and composition for stabilizing soil and process for making the same15US 5,670,567 AKing Fahd University of Petroleum and Minerals, Research Institute · 1997
- Process for the consolidation of a geological formation by a substance polymerizable at the temperature and pressure of the formation11US 5,201,612 AInstitut Francais du Petrole · 1993
- Method for improving the mechanical properties of soil, a polymeric solution therefore, and a process for preparing polymeric solutions7US 4,793,741 AKuwait Institute for Scientific Research · 1988
- Water-absorbing and water-retaining multi-nutrient biodegradable polymeric slow/controlled release fertilizer having a semi-interpenetrating network structure1US 10,865,161 B2North University of China · 2020