C04B 41/526
Multiple coating or impregnation with materials having the same composition but different
Official title: {Multiple coating or impregnation with materials having the same composition but different characteristics}
C04B41/526 (Multiple coating or impregnation with materials having the same composition but different) appears on 25 US grants and 22 published applications in this corpus.
Search patents in C04B- Granted patents
- 25
- Published applications
- 22
- Assignees
- 31
- Inventors
- 87
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 4 |
| 2020 | 2 | 2 |
| 2021 | 3 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 5 |
| 2024 | 2 | 3 |
| 2025 | 3 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hafnon and zircon environmental barrier coatings for silicon-based components11 Aug 2026US 12,703,668 B2Rtx Corporation
- Overlay coating resistant to molten calcium-magnesium-alumino-silicate17 Mar 2026US 12,577,176 B2Oerlikon Surface Solutions AG, PfäFfikon
- Refractory carbide multilayer19 Aug 2025US 12,392,041 B2Sgl Carbon SE
- Environmental barrier coating27 May 2025US 12,312,281 B2Rtx Corporation
- CMAS-resistant environmental barrier coating system18 Feb 2025US 12,227,464 B2Rolls-Royce North American Technologies Inc.
- Multilayer environmental barrier coating17 Sep 2026US 2026/0274765 A1Rtx Corporation
- Thermal insulation material and method for producing thermal insulation material5 Dec 2024US 2024/0400464 A1Nitto Denko Corporation
- Overlay coating resistant to molten calcium-magnesium-alumino-silicate3 Oct 2024US 2024/0327308 A1Oerlikon Surface Solutions AG, PfäFfikon
- Hafnon and Zircon Environmental Barrier Coatings for Silicon-Based Components6 Jun 2024US 2024/0182372 A1Rtx Corporation
- Dual application of roofing granules to bituminous roofing material9 Nov 2023US 2023/0357083 A1Johns Manville
Most cited
By later US patents
- Process for producing carbon/carbon composite having oxidation resistance47US 5,045,356 AJapan as represented by the Director-General National, Aerospace Laboratory · 1991
- Inorganic dual-layer microporous supported membranes32US 6,536,604 B12003
- Ceramic filter and process for making it22US 5,110,470 AToto Ltd. · 1992
- Multilayered thin ferroelectric film18US 5,558,946 AFuji Xerox Co., Ltd. · 1996
- Optical elements and method of manufacture12US 5,120,602 ARaytheon Company · 1992