E01H 4/023
Maintaining surfaces for ice sports
Official title: {Maintaining surfaces for ice sports, e.g. of skating rinks}
E01H4/023 (Maintaining surfaces for ice sports) appears on 47 US grants and 40 published applications in this corpus.
Search patents in E01H- Granted patents
- 47
- Published applications
- 40
- Assignees
- 19
- Inventors
- 71
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 6 |
| 2008 | 2 | 1 |
| 2009 | 2 | 2 |
| 2010 | 3 | 2 |
| 2011 | 0 | 3 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 1 | 1 |
| 2016 | 3 | 0 |
| 2017 | 0 | 3 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ice edger brush apparatus23 Jun 2026US 12,662,784 B2
- Ice leveling system10 Feb 2026US 12,546,073 B2
- Portable ice rink sprinkler4 Nov 2025US 12,460,361 B1
- Support for a snow bucket on ice resurfacing machines21 Nov 2023US 11,821,579 B2Peter McHugh
- Inclinometer-based surface profilometry10 May 2022US 11,326,879 B2Appareo Systems, LLC
- Composite blade23 Apr 2026US 2026/0109065 A1
- Ice edger brush apparatus27 Feb 2025US 2025/0067011 A1
- Sports field maintenance system and method for maintaining sports field1 Aug 2024US 2024/0251703 A1ICE guard Oy
- Method, apparatus and arrangement for repairing ice of ice field15 Feb 2024US 2024/0052587 A1Vepe-Icepro Oy
- Ice leveling system26 Oct 2023US 2023/0340739 A1Latec Machine Control Inc.
Most cited
By later US patents
- Ice edger for ice resurfacing machine32US 4,372,617 AFrank J. Zamboni & Co. · 1983
- Planing device mounted on machines for processing ice20US 6,477,794 B1Toronto GmbH · 2002
- Maintaining an ice rink adjacent a side edge17US 4,918,844 A1990
- Additive for treating water used to form ice14US 4,953,360 ASlick Ice Limited · 1990
- Water and energy recovery process for an ice rink13US 5,536,411 ABassai Limited · 1996