E05B 19/0023
Characterized by variation of the contact surface between the key and the
Official title: {characterized by variation of the contact surface between the key and the tumbler pins or plates}
E05B19/0023 (Characterized by variation of the contact surface between the key and the) appears on 68 US grants and 54 published applications in this corpus.
Search patents in E05B- Granted patents
- 68
- Published applications
- 54
- Assignees
- 32
- Inventors
- 85
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 2 |
| 2009 | 1 | 3 |
| 2010 | 5 | 1 |
| 2011 | 3 | 2 |
| 2012 | 4 | 3 |
| 2013 | 0 | 4 |
| 2014 | 2 | 0 |
| 2015 | 3 | 7 |
| 2016 | 4 | 6 |
| 2017 | 6 | 3 |
| 2018 | 1 | 1 |
| 2019 | 5 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 3 | 4 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Key and key blanks operable in vertically and horizontally oriented keyways22 Sep 2026US 12,742,342 B2Assa Abloy High Security Group Inc.
- Key element, lock cylinder, locking system, and method21 Apr 2026US 12,607,038 B2Dormakaba Schweiz AG
- Key and key blanks operable in vertically and horizontally oriented keyways3 Sep 2024US 12,077,983 B2Assa Abloy High Security Group Inc.
- Lock system with auxiliary pin tumbler stack25 Jun 2024US 12,018,512 B2Kaba Ilco Corp.
- Key blank and key for actuating a disk cylinder and method of manufacturing such a key blank and key21 May 2024US 11,988,017 B2ABUS August Bremicker Söhne KG
- A lock and a method for manufacturing a key12 Mar 2026US 2026/0071465 A1Henry Squire & Sons Holdings Ltd
- Key element, lock cylinder, locking system, and method21 Aug 2025US 2025/0263950 A1Dormakaba Schweiz AG
- Key and key blanks operable in vertically and horizontally oriented keyways26 Dec 2024US 2024/0426134 A1Assa Abloy High Security Group Inc.
- Locking device, unlocking key, and door12 Dec 2024US 2024/0410197 A1LIXIL Corporation
- Flat key comprising surface coding and a cylinder lock7 Nov 2024US 2024/0368919 A1EVVA Sicherheitstechnologie GmbH
Most cited
By later US patents
- Locking device and reversible key80US 4,964,288 ADOM-Sicherheitstechnik GmbH & Co. KG · 1990
- Hierarchical cylinder lock and key system31US 5,419,168 AMedeco Security Locks, Inc. · 1995
- Hierarchical cylinder lock and key system30US 5,570,601 AMedeco Security Locks, Inc. · 1996
- Lock and key system with extra code combinations30US 7,159,424 B2Winloc AG · 2007
- Pin tumblers and corresponding keys for cylinder locks28US 5,289,709 AMedeco Security Locks, Inc. · 1994