C04B 41/52
Multiple coating or impregnating multiple coating or impregnating with the same composition
Official title: Multiple coating or impregnating {multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation}
C04B41/52 (Multiple coating or impregnating multiple coating or impregnating with the same composition) appears on 1,906 US grants and 1,708 published applications in this corpus.
Search patents in C04B- Granted patents
- 1,906
- Published applications
- 1,708
- Assignees
- 912
- Inventors
- 4,238
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 15 | 0 |
| 1983 | 9 | 0 |
| 1984 | 19 | 0 |
| 1985 | 19 | 0 |
| 1986 | 25 | 0 |
| 1987 | 31 | 0 |
| 1988 | 33 | 0 |
| 1989 | 43 | 0 |
| 1990 | 26 | 0 |
| 1991 | 46 | 0 |
| 1992 | 45 | 0 |
| 1993 | 54 | 0 |
| 1994 | 48 | 0 |
| 1995 | 37 | 0 |
| 1996 | 38 | 0 |
| 1997 | 40 | 0 |
| 1998 | 59 | 0 |
| 1999 | 53 | 0 |
| 2000 | 45 | 0 |
| 2001 | 60 | 14 |
| 2002 | 48 | 70 |
| 2003 | 61 | 74 |
| 2004 | 54 | 50 |
| 2005 | 38 | 64 |
| 2006 | 30 | 67 |
| 2007 | 30 | 64 |
| 2008 | 34 | 64 |
| 2009 | 32 | 71 |
| 2010 | 31 | 68 |
| 2011 | 45 | 71 |
| 2012 | 44 | 56 |
| 2013 | 41 | 41 |
| 2014 | 33 | 54 |
| 2015 | 37 | 42 |
| 2016 | 33 | 77 |
| 2017 | 40 | 62 |
| 2018 | 41 | 61 |
| 2019 | 50 | 70 |
| 2020 | 57 | 65 |
| 2021 | 39 | 91 |
| 2022 | 50 | 69 |
| 2023 | 67 | 83 |
| 2024 | 64 | 97 |
| 2025 | 74 | 101 |
| 2026 | 53 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C04B 41/522Multiple coatings, for one of the coatings of which at least one62
- C04B 41/524Multiple coatings, comprising a coating layer of the same material as a31
- C04B 41/526Multiple coating or impregnation with materials having the same composition but different25
- C04B 41/528Applying layers containing opposite charged particles or materials in the successive layers7
Recent patents
- Composite ceramic substrate having multi-layer configuration29 Sep 2026US 12,747,191 B2Tong Hsing Electronic Industries, Ltd.
- Environmental barrier coating29 Sep 2026US 12,747,192 B2Rtx Corporation
- Environmental barrier coating and method of applying the same15 Sep 2026US 12,735,365 B2Rtx Corporation
- Method for repairing ceramic composite components18 Aug 2026US 12,709,581 B2General Electric Company
- Antibacterial ceramic tile and preparation method thereof18 Aug 2026US 12,709,582 B2Monalisa Group Co., Ltd
- Method of Forming a Binder Composition and Products Formed Therefrom8 Oct 2026US 2026/0308062 A1A.M.N (Natanya) Engineering and Consulting, LTD
- Environmental barrier coating8 Oct 2026US 2026/0308075 A1Rtx Corporation
- Mit Diamant beschichtetes AlN-Substrat und Verfahren zum Herstellen24 Sep 2026US 2026/0285775 A1Condias GmbH
- Slurry-based methods for forming a bond coat and articles formed by the methods17 Sep 2026US 2026/0274760 A1General Electric Company
- Environmental barrier coatings and methods of formation17 Sep 2026US 2026/0274763 A1General Electric Company
Most cited
By later US patents
- Halogen gas plasma-resistive members and method for producing the same, laminates, and corrosion-resistant members455US 6,783,875 B2NGK Insulators, Ltd. · 2004
- Corrosion-resistant member, wafer-supporting member, and method of manufacturing the same355US 6,139,983 ANGK Insulators, Ltd. · 2000
- Nanostructured fillers and carriers316US 6,228,904 B1Nanomaterials Research Corporation · 2001
- Thermal/environmental barrier coating system for silicon-based materials284US 5,985,470 AGeneral Electric Company · 1999
- Method for protecting products made of a refractory material against oxidation, and resulting protected products259US 5,677,060 ASociete Europeenne de Propulsion · 1997