G21C 17/0225
Chemical surface treatment
Official title: {Chemical surface treatment, e.g. corrosion (corrosion prevention in presence of water from scale removal or by modification of the properties of the liquid C02F5/00; inhibiting corrosion by adding corrosion inhibitors C23F11/00)}
G21C17/0225 (Chemical surface treatment) appears on 152 US grants and 147 published applications in this corpus.
Search patents in G21C- Granted patents
- 152
- Published applications
- 147
- Assignees
- 68
- Inventors
- 375
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 3 |
| 2002 | 5 | 8 |
| 2003 | 3 | 5 |
| 2004 | 2 | 2 |
| 2005 | 5 | 2 |
| 2006 | 1 | 6 |
| 2007 | 0 | 2 |
| 2008 | 2 | 4 |
| 2009 | 0 | 9 |
| 2010 | 1 | 11 |
| 2011 | 5 | 8 |
| 2012 | 6 | 7 |
| 2013 | 3 | 4 |
| 2014 | 12 | 12 |
| 2015 | 2 | 6 |
| 2016 | 5 | 11 |
| 2017 | 11 | 9 |
| 2018 | 6 | 7 |
| 2019 | 11 | 3 |
| 2020 | 4 | 9 |
| 2021 | 4 | 8 |
| 2022 | 5 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 3 |
| 2025 | 3 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for treating a metal part of a primary circuit of a water-cooled nuclear reactor9 Jun 2026US 12,651,674 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Corrosion and wear resistant overlay, method for forming corrosion and wear resistant overlay, and corrosion and wear resistant valve23 Dec 2025US 12,502,727 B2Hitachi-GE Nuclear Energy, Ltd.
- Chemical decontamination method and chemical decontamination apparatus22 Apr 2025US 12,283,386 B2Hitachi-GE Nuclear Energy, Ltd.
- Hydrogenation system for a pressurized water reactor4 Mar 2025US 12,243,659 B2Framatome
- Enhanced surface treatments22 Oct 2024US 12,125,601 B2Cerium Laboratories LLC
- Metal injection system using electrolysis of metal in a nuclear power plant2 Jul 2026US 2026/0188533 A1GE-Hitachi Nuclear Energy Americas LLC
- A method of adjusting oxoacidity14 May 2026US 2026/0135007 A1Seaborg Aps
- Plant reliability evaluation system, plant reliability evaluation method, and plant reliability evaluation program22 May 2025US 2025/0166858 A1Hitachi-GE Nuclear Energy, Ltd.
- Method and apparatus for reducing deterioration in a nuclear reactor27 Feb 2025US 2025/0069764 A1
- Extraction of fission products from molten salt via redox reaction with reducting agents30 Jan 2025US 2025/0037889 A1Abilene Christian University
Most cited
By later US patents
- Process for decontaminating a nuclear reactor coolant system50US 5,305,360 AWestinghouse Electric Corp. · 1994
- Method for reducing corrosion of components exposed to high-temperature water47US 5,135,709 AGeneral Electric Company · 1992
- Operation life of on-life boiling water reactors34US 5,130,081 AGeneral Electric Company · 1992
- Dilution control in hardfacing severe service components33US 8,828,312 B2Kennametal Inc. · 2014
- Method of providing extended life expectancy for components of boiling water reactors30US 5,130,080 AGeneral Electric Company · 1992