C21C 7/10
Handling in a vacuum
C21C7/10 (Handling in a vacuum) appears on 254 US grants and 223 published applications in this corpus.
Search patents in C21C- Granted patents
- 254
- Published applications
- 223
- Assignees
- 170
- Inventors
- 978
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 9 | 2 |
| 2003 | 2 | 3 |
| 2004 | 4 | 8 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 2 | 7 |
| 2008 | 1 | 5 |
| 2009 | 2 | 6 |
| 2010 | 2 | 6 |
| 2011 | 6 | 7 |
| 2012 | 8 | 10 |
| 2013 | 4 | 2 |
| 2014 | 1 | 4 |
| 2015 | 4 | 10 |
| 2016 | 1 | 7 |
| 2017 | 6 | 7 |
| 2018 | 3 | 4 |
| 2019 | 6 | 17 |
| 2020 | 7 | 6 |
| 2021 | 8 | 4 |
| 2022 | 4 | 13 |
| 2023 | 5 | 27 |
| 2024 | 10 | 27 |
| 2025 | 15 | 25 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for smelting steel for ultrafine silicon carbide sawing wire9 Jun 2026US 12,649,958 B2Baoshan Iron & Steel Co., Ltd.
- Decarburization refining method for molten steel under reduced pressure19 May 2026US 12,630,893 B2Jfe Steel Corporation
- Ultra-high phosphorus molten iron low-cost smelting method for polar steel21 Apr 2026US 12,606,877 B2Laiwu Steel Yinshan Section Co., Ltd.
- Method for preparing stainless steel seamless tube with ultra-high cleanliness for integrated circuit and IC industry preparation device, and stainless steel seamless tube14 Apr 2026US 12,601,026 B2Shengtak New Materials Co., Ltd
- Production method for non-oriented silicon steel and non-oriented silicon steel31 Mar 2026US 12,590,351 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn) China
- Method for producing molten steel1 Oct 2026US 2026/0297699 A1Jfe Steel Corporation
- Apparatus and method for refining liquid metal24 Sep 2026US 2026/0284739 A1Danieli & C. Officine Meccaniche SpA
- Production and preparation method of carburized gear shaft bars by means of converter process24 Sep 2026US 2026/0286458 A1Bengang Steel Plates Co., Ltd.
- Method for deoxidation refining of molten steel, method for producing steel material, and steel material thereof3 Sep 2026US 2026/0258518 A1Jfe Steel Corporation
- Steel strip for battery case and method for producing steel strip20 Aug 2026US 2026/0241441 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co., Ltd.
Most cited
By later US patents
- Vacuum melting/casting method to reduce inclusions31US 5,226,946 AHowmet Corporation · 1993
- Method for direct metal making by microwave energy25US 6,277,168 B12001
- Method for producing killed steels for continuous casting24US 4,152,140 ANippon Steel Corporation · 1979
- Method of desulfurization of a steel melt21US 3,980,469 AThyssen Niederrhein AG Hutten- und Walzwerke · 1976
- Method for the refining of iron-based melts19US 4,200,452 ADSO "Cherna Metalurgia" · 1980