C09K
Materials for miscellaneous applications, not provided for elsewhere
C09K (Materials for miscellaneous applications, not provided for elsewhere) appears on 64,838 US grants and 68,140 published applications in this corpus.
Search patents in C09K- Granted patents
- 64,838
- Published applications
- 68,140
- Assignees
- 12,587
- Inventors
- 94,607
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 528 | 0 |
| 1977 | 468 | 0 |
| 1978 | 507 | 0 |
| 1979 | 327 | 0 |
| 1980 | 442 | 0 |
| 1981 | 452 | 0 |
| 1982 | 387 | 0 |
| 1983 | 446 | 0 |
| 1984 | 656 | 0 |
| 1985 | 631 | 0 |
| 1986 | 552 | 0 |
| 1987 | 636 | 0 |
| 1988 | 606 | 0 |
| 1989 | 703 | 0 |
| 1990 | 687 | 0 |
| 1991 | 807 | 0 |
| 1992 | 882 | 0 |
| 1993 | 859 | 0 |
| 1994 | 868 | 0 |
| 1995 | 824 | 0 |
| 1996 | 777 | 0 |
| 1997 | 839 | 0 |
| 1998 | 1037 | 0 |
| 1999 | 943 | 0 |
| 2000 | 945 | 0 |
| 2001 | 1046 | 327 |
| 2002 | 978 | 1129 |
| 2003 | 1099 | 1496 |
| 2004 | 1133 | 1871 |
| 2005 | 875 | 2017 |
| 2006 | 1141 | 2073 |
| 2007 | 1139 | 2237 |
| 2008 | 1045 | 2173 |
| 2009 | 1162 | 2336 |
| 2010 | 1643 | 2548 |
| 2011 | 1672 | 2440 |
| 2012 | 1628 | 2577 |
| 2013 | 1892 | 2766 |
| 2014 | 1995 | 2887 |
| 2015 | 2217 | 3259 |
| 2016 | 2209 | 3563 |
| 2017 | 2545 | 3623 |
| 2018 | 2775 | 3542 |
| 2019 | 2920 | 3597 |
| 2020 | 2885 | 3744 |
| 2021 | 2725 | 3504 |
| 2022 | 2612 | 3236 |
| 2023 | 2515 | 3376 |
| 2024 | 2456 | 3264 |
| 2025 | 2185 | 2660 |
| 2026 | 1537 | 1895 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- C09K 11/00Luminescent materials17,735
- C09K 8/00Compositions for drilling of boreholes or wells15,909
- C09K 2211/00Chemical nature of organic luminescent or tenebrescent compoundsIndexing code8,004
- C09K 3/00Materials not provided for elsewhere7,769
- C09K 19/00Liquid crystal materials7,676
- C09K 5/00Heat-transfer, heat-exchange or heat-storage materials5,212
- C09K 2323/00Functional layers of liquid crystal optical display excluding electroactive liquid crystal layerIndexing code5,183
- C09K 2208/00Aspects relating to compositions of drilling or well treatment fluidsIndexing code4,055
All 24 main groupsShow fewer
- C09K 23/00Use of substances as emulsifying, wetting, dispersing, or foam-producing agents2,561
- C09K 21/00Fireproofing materials1,962
- C09K 2205/00Aspects relating to compounds used in compression type refrigeration systemsIndexing code1,653
- C09K 15/00Anti-oxidant compositions1,345
- C09K 9/00Tenebrescent materials, i.e. materials for which the range of wavelengths for energy1,298
- C09K 13/00Etching, surface-brightening or pickling compositions1,233
- C09K 17/00Soil-conditioning materials or soil-stabilising materials1,153
- C09K 2200/00Chemical nature of materials in mouldable or extrudable form for sealing orIndexing code1,007
- C09K 2219/00Aspects relating to the form of the liquid crystal [lc] material, orIndexing code420
- C09K 2101/00Agricultural useIndexing code18
- C09K 2109/00Ph regulationIndexing code15
- C09K 2105/00Erosion preventionIndexing code7
- C09K 2103/00Civil engineering useIndexing code4
- C09K 2107/00ImpermeabilisationIndexing code3
- C09K 2111/00Perovskites, i.e. abx3Indexing code0
- C09K 2113/00Quantum dotsIndexing code0
Recent patents
- Chlorinated fluoroaromatics and methods of using same6 Oct 2026US 12,753,140 B23M Innovative Properties Company
- Aromatic amine derivative, and organic electroluminescent element using same6 Oct 2026US 12,753,145 B2Idemitsu Kosan Co., Ltd.
- Preparation method and chiral sieving application of novel 12-crown-4 covalent organic frameworks6 Oct 2026US 12,753,169 B2Chongqing University of Arts and Sciences
- Organic molecules for optoelectronic devices6 Oct 2026US 12,753,192 B2Samsung Display Co., Ltd.
- Contaminant remediation with functionalized (meth)acrylic polymer or copolymer macroparticulates and systems related thereto6 Oct 2026US 12,753,257 B2Countertrace LLC
- Complexated biomolecules for use in contaminated soil or groundwater cleanup8 Oct 2026US 2026/0308334 A1BlueHalo, LLC
- Compositions8 Oct 2026US 2026/0308433 A1
- Hfo-1234ze, hfo-1225zc and hfo-1234yf containing compositions and processes for producing and using the compositions8 Oct 2026US 2026/0308434 A1The Chemours Company Fc, LLC
- Thermally conductive member, thermally conductive composition, structure, and method for reworking structure8 Oct 2026US 2026/0308435 A1Sekisui Chemical Co., Ltd.
- Propylene Carbonate Based Heat Transfer Fluid8 Oct 2026US 2026/0308436 A1CCI North America Corporation
Most cited
By later US patents
- Electroluminescent devices2,432US 5,247,190 ACambridge Capital Management Limited · 1993
- Multicolor organic light emitting devices2,173US 5,707,745 AThe Trustees of Princeton University · 1998
- OLEDs doped with phosphorescent compounds1,989US 6,303,238 B1The Trustees of Princeton University · 2001
- Transparent contacts for organic devices1,986US 5,703,436 AThe Trustees of Princeton University · 1997
- Complexes with tridentate ligands1,471US 7,279,704 B2Universal Display Corporation · 2007