B21H
Making particular metal objects by rolling
Official title: MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS (essentially from sheet metal B21D)
B21H (Making particular metal objects by rolling) appears on 1,419 US grants and 927 published applications in this corpus.
Search patents in B21H- Granted patents
- 1,419
- Published applications
- 927
- Assignees
- 806
- Inventors
- 2,600
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 36 | 0 |
| 1977 | 35 | 0 |
| 1978 | 21 | 0 |
| 1979 | 12 | 0 |
| 1980 | 23 | 0 |
| 1981 | 24 | 0 |
| 1982 | 21 | 0 |
| 1983 | 14 | 0 |
| 1984 | 22 | 0 |
| 1985 | 23 | 0 |
| 1986 | 21 | 0 |
| 1987 | 35 | 0 |
| 1988 | 32 | 0 |
| 1989 | 36 | 0 |
| 1990 | 27 | 0 |
| 1991 | 19 | 0 |
| 1992 | 20 | 0 |
| 1993 | 20 | 0 |
| 1994 | 19 | 0 |
| 1995 | 25 | 0 |
| 1996 | 26 | 0 |
| 1997 | 26 | 0 |
| 1998 | 51 | 0 |
| 1999 | 52 | 0 |
| 2000 | 44 | 0 |
| 2001 | 41 | 12 |
| 2002 | 38 | 37 |
| 2003 | 32 | 27 |
| 2004 | 21 | 42 |
| 2005 | 19 | 30 |
| 2006 | 31 | 41 |
| 2007 | 23 | 26 |
| 2008 | 11 | 38 |
| 2009 | 14 | 29 |
| 2010 | 11 | 28 |
| 2011 | 20 | 41 |
| 2012 | 19 | 32 |
| 2013 | 26 | 39 |
| 2014 | 29 | 36 |
| 2015 | 29 | 49 |
| 2016 | 24 | 52 |
| 2017 | 46 | 54 |
| 2018 | 40 | 56 |
| 2019 | 46 | 46 |
| 2020 | 41 | 50 |
| 2021 | 49 | 28 |
| 2022 | 39 | 45 |
| 2023 | 25 | 26 |
| 2024 | 32 | 25 |
| 2025 | 20 | 24 |
| 2026 | 9 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B21H 3/00Making helical bodies or bodies having parts of helical shape428
- B21H 1/00Making articles shaped as bodies of revolution420
- B21H 7/00Making articles not provided for in the preceding groups311
- B21H 5/00Making gear wheels , racks, spline shafts or worms294
- B21H 8/00Rolling metal of indefinite length in repetitive shapes specially designed for the142
- B21H 9/00Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in40
Recent patents
- Vehicle wheel rim, vehicle wheel including such a wheel rim and method for producing such a wheel rim and vehicle wheel25 Aug 2026US 12,715,242 B2Maxion Wheels Holding GmbH
- Vehicle wheel rim, vehicle wheel including such a wheel rim and method for producing such a wheel rim and vehicle wheel25 Aug 2026US 12,715,243 B2Maxion Wheels Holding GmbH
- Method for rolling a ring-shaped rolling product having an open cylindrical cross section in a ring rolling machine, and ring rolling machine for carrying out the method28 Jul 2026US 12,691,491 B2SMS group GmbH
- Ring-rolling mill and method for operating same16 Jun 2026US 12,654,220 B2SMS group GmbH
- Method for producing a hot-dip-coated steel sheet and hot-dip-coated steel sheet12 May 2026US 12,624,436 B2ThyssenKrupp Steel Europe AG
- Method for rolling a ring-shaped rolling product having an open cylindrical cross section in a ring rolling machine, and ring rolling machine for carrying out the method1 Oct 2026US 2026/0295653 A1SMS group GmbH
- Fox ear keylock insert1 Oct 2026US 2026/0298280 A1Rtx Corporation
- System and method for manufacturing reduced thread height point fasteners17 Sep 2026US 2026/0273612 A1Research Engineering & Manufacturing, Inc.
- Balance compensated screw thread and method for making the same13 Aug 2026US 2026/0232362 A1
- Process for embossing microgrooves in light-reflecting sheet metal30 Jul 2026US 2026/0216782 A1
Most cited
By later US patents
- Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article225US 5,975,987 A3M Innovative Properties Company · 1999
- Tubular structures and knurling systems and methods of manufacture and use thereof118US 9,933,092 B2Deflecto, LLC · 2018
- Wear-resistant ceramic, cermet or metallic embossing surfaces, methods for producing same, methods of embossing articles by same and novel embossed articles112US 4,787,837 AUnion Carbide Corporation · 1988
- Method and apparatus for the manufacture of threaded aluminum containers99US 5,293,765 AE. Nussbaum AG · 1994
- Wood screw and method for making same94US 4,815,909 A1989