B22C 1/2273
Polyurethanes
Official title: {Polyurethanes; Polyisocyanates}
B22C1/2273 (Polyurethanes) appears on 137 US grants and 68 published applications in this corpus.
Search patents in B22C- Granted patents
- 137
- Published applications
- 68
- Assignees
- 46
- Inventors
- 185
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 0 |
| 2003 | 4 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 3 | 7 |
| 2012 | 1 | 0 |
| 2013 | 4 | 6 |
| 2014 | 3 | 3 |
| 2015 | 1 | 4 |
| 2016 | 4 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 5 |
| 2019 | 3 | 7 |
| 2020 | 3 | 4 |
| 2021 | 2 | 3 |
| 2022 | 4 | 1 |
| 2023 | 3 | 1 |
| 2024 | 4 | 6 |
| 2025 | 0 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Halloysite clay as smoke-reducing additive for polyurethane-forming binder system10 Sep 2024US 12,083,584 B2ASK Chemicals GmbH
- Isocyanate composition and binder system containing said isocyanate composition3 Sep 2024US 12,077,629 B2HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Production method, casting moulds, cores or feeders and kit and method for production of a metallic casting13 Aug 2024US 12,059,724 B2Chemex Foundry Solutions GmbH
- Product for reducing sand adhesions2 Jul 2024US 12,023,726 B2ASK Chemicals GmbH
- Binder systems12 Dec 2023US 11,839,913 B2Imerys USA, Inc.
- Method for reducing carbon-based emissions and/or carbon-based casting defects during a moulding cycle of a moulding material containing smectite containing clay, said moulding cycle comprising two or more cycles16 Jul 2026US 2026/0199963 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Moulding material for producing a clay-bonded mould, and use thereof in a moulding material cycle16 Jul 2026US 2026/0200801 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Method for guiding a moulding material in a moulding material cycle comprising two or more cycles16 Jul 2026US 2026/0200805 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Method for guiding a moulding material in a moulding material cycle comprising two or more cycles16 Jul 2026US 2026/0200806 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
- Wash composition for reducing formaldehyde emissions3 Jul 2025US 2025/0214131 A1HüTtenes-Albertus Chemische Werke Gesellschaft Mit BeschräNkter Haftung
Most cited
By later US patents
- Foundry binder of phenolic resole resin, polyisocyanate and epoxy resin39US 5,733,952 ABorden Chemical, Inc. · 1998
- Polyurethane binder compositions31US 4,546,124 AAcme Resin Corporation · 1985
- Improved foundry process and binder resin composition therefor28US 4,079,031 ADelta Oil Products Corporation · 1978
- Phenolic resin-polyisocyanate binder systems containing a drying oil and use thereof28US 4,268,425 AAshland Oil, Inc. · 1981
- Urethane binder compositions for no-bake and cold box foundry application utilizing isocyanato-urethane polymers28US 4,293,480 AAshland Oil, Inc. · 1981