C08J 2205/052
Closed cells, i.e. more than 50% of the pores are closed
C08J2205/052 (Closed cells, i.e. more than 50% of the pores are closed) appears on 457 US grants and 739 published applications in this corpus.
Search patents in C08J- Granted patents
- 457
- Published applications
- 739
- Assignees
- 282
- Inventors
- 1,393
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 2 |
| 2002 | 12 | 10 |
| 2003 | 15 | 16 |
| 2004 | 6 | 13 |
| 2005 | 3 | 14 |
| 2006 | 4 | 12 |
| 2007 | 5 | 14 |
| 2008 | 5 | 6 |
| 2009 | 7 | 22 |
| 2010 | 7 | 23 |
| 2011 | 10 | 23 |
| 2012 | 13 | 20 |
| 2013 | 17 | 23 |
| 2014 | 12 | 30 |
| 2015 | 12 | 36 |
| 2016 | 20 | 43 |
| 2017 | 16 | 44 |
| 2018 | 27 | 60 |
| 2019 | 19 | 52 |
| 2020 | 33 | 48 |
| 2021 | 25 | 37 |
| 2022 | 21 | 47 |
| 2023 | 34 | 60 |
| 2024 | 32 | 38 |
| 2025 | 26 | 26 |
| 2026 | 13 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production22 Sep 2026US 12,742,034 B2Covestro LLC
- Process for producing isocyanate-based foam construction boards8 Sep 2026US 12,729,278 B2Amrize Technology Switzerland LLC
- Extruded foams manufactured using highly branched ethylene-based polymers25 Aug 2026US 12,715,973 B2Dow Global Technologies LLC
- Isocyanate-reactive compositions, rigid polyurethane foams and methods for their production14 Jul 2026US 12,679,922 B2Covestro LLC
- Processing aids for use in manufacture extruded polystyrene foams using low global warming potential blowing agents14 Jul 2026US 12,679,942 B2Owens Corning Intellectual Capital, LLC
- Surface functionalized foams and methods of use thereof1 Oct 2026US 2026/0297258 A1
- Method for producing polyolefin-based resin expanded beads and polyolefin-based resin expanded beads1 Oct 2026US 2026/0297276 A1Jsp Corporation
- Method for producing polyolefin-based resin expanded beads and polyolefin-based resin expanded beads1 Oct 2026US 2026/0297277 A1Jsp Corporation
- Isocyanate-reactive compositions, rigid polyurethane foams and methods for their production24 Sep 2026US 2026/0286035 A1Covestro LLC
- Hydrophobic lignin-based in-built fire retardant, its preparation and application in polyurethane foam17 Sep 2026US 2026/0275197 A1Nano and Advanced Materials Institute Limited
Most cited
By later US patents
- Composite foams108US 4,966,919 AThe United States of America as represented by the United States Department of Energy · 1990
- Composite foams107US 5,037,859 AThe United States of America as represented by the United States Department of Energy · 1991
- Pentafluoropropene-based compositions80US 6,858,571 B2Honeywell International Inc. · 2005
- Polyurethane foams having improved heat sag and a process for their production63US 6,649,667 B2Bayer Polymers LLC · 2003
- Thermal insulation foamed material having carbon dioxide absorbents and method for manufacturing same58US 5,792,801 AMatsushita Refrigeration Company · 1998