D21H 21/38
Corrosion-inhibiting agents or anti-oxidants
D21H21/38 (Corrosion-inhibiting agents or anti-oxidants) appears on 17 US grants and 26 published applications in this corpus.
Search patents in D21H- Granted patents
- 17
- Published applications
- 26
- Assignees
- 24
- Inventors
- 77
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 3 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solvent-based oxygen barrier coating composition1 Sep 2026US 12,723,161 B2Siegwerk Druckfarben AG & Co. KGaA
- Method for controlling decomposition of corrosion-resistant paper10 Feb 2026US 12,546,063 B2Nippon Beet Sugar Manufacturing Co., Ltd.
- Decay-resistant paper1 Oct 2024US 12,104,326 B2Nippon Beet Sugar Manufacturing Co., Ltd.
- Aromatized and flavored paper products31 May 2022US 11,346,051 B2IIW ENTOURAGE DELIVERY SYSTEMS Ltd.
- Nano TiO2-doped anti-ultraviolet para-aramid nano paper and preparation method thereof24 May 2022US 11,339,538 B2Shaanxi University of Science and Technology
- Solvent-based oxygen barrier coating composition17 Apr 2025US 2025/0122385 A1Siegwerk Druckfarben AG & Co. KGaA
- Method for controlling decomposition of corrosion-resistant paper25 Jan 2024US 2024/0026610 A1Nippon Beet Sugar Manufacturing Co., Ltd.
- Barrier paper or board5 Oct 2023US 2023/0313466 A1SAPPI Netherlands Services B.V.
- Decay-resistant paper20 Oct 2022US 2022/0333311 A1Nippon Beet Sugar Manufacturing Co., Ltd.
- Vaporizable anticorrosive coating paper and manufacturing method therefor7 Oct 2021US 2021/0309000 A1Sambu Tech Co., Ltd.
Most cited
By later US patents
- Sanitary paper8US 7,300,544 B2Daio Paper Corporation · 2007
- Pulp packing material and method for producing the same5US 6,797,119 B2Seiko Epson Corporation · 2004
- Aromatized and flavored paper products3US 11,346,051 B2IIW ENTOURAGE DELIVERY SYSTEMS Ltd. · 2022
- Reinforced polymer sheet3US 4,861,428 AShell Oil Company · 1989
- Inhibition of corrosion in aqueous systems3US 6,187,262 B1BetzDearborn Inc. · 2001