C23D
Enamelling of, or applying a vitreous layer to, metals
C23D (Enamelling of, or applying a vitreous layer to, metals) appears on 326 US grants and 235 published applications in this corpus.
Search patents in C23D- Granted patents
- 326
- Published applications
- 235
- Assignees
- 254
- Inventors
- 864
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 12 | 0 |
| 1978 | 11 | 0 |
| 1979 | 11 | 0 |
| 1980 | 17 | 0 |
| 1981 | 12 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 7 | 1 |
| 2003 | 3 | 9 |
| 2004 | 5 | 3 |
| 2005 | 3 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 6 |
| 2009 | 4 | 5 |
| 2010 | 2 | 6 |
| 2011 | 0 | 6 |
| 2012 | 3 | 7 |
| 2013 | 4 | 3 |
| 2014 | 3 | 10 |
| 2015 | 6 | 13 |
| 2016 | 3 | 16 |
| 2017 | 7 | 9 |
| 2018 | 7 | 15 |
| 2019 | 8 | 24 |
| 2020 | 8 | 19 |
| 2021 | 14 | 16 |
| 2022 | 12 | 19 |
| 2023 | 13 | 9 |
| 2024 | 4 | 14 |
| 2025 | 14 | 11 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- C23D 5/00Coating with enamels or vitreous layers288
- C23D 3/00Chemical treatment of the metal surfaces prior to coating38
- C23D 13/00After-treatment of the enamelled articles20
- C23D 9/00Ovens specially adapted for firing enamels12
- C23D 7/00Treating the coatings11
- C23D 1/00Melting or fritting the enamels9
- C23D 11/00Continuous processes9
- C23D 15/00Joining enamelled articles to other enamelled articles by processes involving an enamelling5
All 9 main groupsShow fewer
Recent patents
- Enamel composition, method for preparing enamel composition, and cooking appliance30 Jun 2026US 12,668,526 B2LG Electronics Inc.
- Antibacterial glass composition, method for manufacturing antibacterial glass coating film using same, and home appliance comprising same14 Apr 2026US 12,600,660 B2LG Electronics Inc.
- Method of manufacturing storm drain markers3 Mar 2026US 12,565,766 B2
- Sensor element for a potentiometric sensor and production method17 Feb 2026US 12,553,851 B2Endress+Hauser Conducta GmbH+Co. KG
- Component, in particular a top plate and/or a burner cap of a gas hob having a non-stick and/or non-wetting coating, gas hob comprising such a component and method for manufacturing a component10 Feb 2026US 12,543,746 B2Electrolux Appliances Aktiebolag
- Flexible ceramic coatings for metals and methods of making same11 Jun 2026US 2026/0159437 A1ZYP Coatings, Inc.
- Fusion of glass/ceramic to industrial metallic substrates11 Jun 2026US 2026/0159962 A1Covalent Coating Technology, Inc.
- Soft magnetic composite material sheet and method for producing same30 Apr 2026US 2026/0117390 A1Hitachi, Ltd.
- Piece of equipment and process for the decoration of ceramic manufactured articles26 Mar 2026US 2026/0084439 A1Tecno Italia Digital S.R.L.
- Non-Fluorinated Hybrid Enamel/Silicone Resin Coating26 Feb 2026US 2026/0054470 A1Seb S. A.
Most cited
By later US patents
- Prosthesis parts provided with a coating of a bio-active material125US 4,365,356 AErnst Leitz Wetzlar GmbH · 1982
- Chemical protection of a lithium surface112US 6,911,280 B1PolyPlus Battery Company · 2005
- Prosthesis parts provided with a coating of a bio-active material, process of making same, and method of using them for bone replacement96US 4,168,326 AErnst Leitz Wetzlar GmbH · 1979
- Container, in particular a drinks can, and lid for such a container82US 6,158,608 ACetoni Umwelttechnologie Entwicklungsgesellschaft mbH · 2000
- Method of bonding a bioglass to metal62US 4,159,358 ABoard of Regents, State of Florida · 1979