E05B 37/00
Permutation or combination locks
Official title: Permutation {or combination} locks ({handles with combination locks E05B13/103; keyhole guards with combination locks E05B17/145;} electric permutation locks E05B49/00); Puzzle locks
E05B37/00 (Permutation or combination locks) appears on 1,221 US grants and 862 published applications in this corpus.
Search patents in E05B- Granted patents
- 1,221
- Published applications
- 862
- Assignees
- 353
- Inventors
- 1,253
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 14 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 15 | 0 |
| 1982 | 30 | 0 |
| 1983 | 16 | 0 |
| 1984 | 14 | 0 |
| 1985 | 14 | 0 |
| 1986 | 16 | 0 |
| 1987 | 29 | 0 |
| 1988 | 29 | 0 |
| 1989 | 38 | 0 |
| 1990 | 32 | 0 |
| 1991 | 19 | 0 |
| 1992 | 15 | 0 |
| 1993 | 18 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 25 | 0 |
| 1997 | 22 | 0 |
| 1998 | 27 | 0 |
| 1999 | 32 | 0 |
| 2000 | 23 | 0 |
| 2001 | 19 | 4 |
| 2002 | 28 | 20 |
| 2003 | 29 | 21 |
| 2004 | 26 | 23 |
| 2005 | 24 | 46 |
| 2006 | 29 | 52 |
| 2007 | 26 | 35 |
| 2008 | 37 | 55 |
| 2009 | 20 | 37 |
| 2010 | 19 | 35 |
| 2011 | 21 | 31 |
| 2012 | 32 | 31 |
| 2013 | 28 | 36 |
| 2014 | 26 | 34 |
| 2015 | 26 | 32 |
| 2016 | 35 | 30 |
| 2017 | 33 | 39 |
| 2018 | 39 | 37 |
| 2019 | 37 | 36 |
| 2020 | 33 | 47 |
| 2021 | 24 | 36 |
| 2022 | 35 | 29 |
| 2023 | 13 | 27 |
| 2024 | 33 | 33 |
| 2025 | 24 | 29 |
| 2026 | 25 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E05B 37/02Permutation or combination locks: with tumbler discs or rings arranged on a635
- E05B 37/0031Locks with both permutation and key actuation246
- E05B 37/0048Permutation or combination locks: with changeable combination178
- E05B 37/08Permutation or combination locks: with tumbler discs on a single axis, all152
- E05B 37/12Permutation or combination locks: with tumbler discs on several axes125
- E05B 37/16Permutation or combination locks: with two or more push or pull knobs120
- E05B 37/0068In padlocks39
- E05B 37/20Puzzle locks34
All 17 subgroupsShow fewer
- E05B 37/0075Automatic scrambling32
- E05B 37/0003Preventing detection of the combination29
- E05B 37/0072Sign-, picture- or letter-based permutations10
- E05B 37/04Permutation or combination locks: with tumbler discs on a single axis, all10
- E05B 37/0044Permutation or combination locks: with telephone-type dial9
- E05B 37/0096Permutation or combination locks: with tumbler discs arranged on concentric axes, each9
- E05B 37/0027X-ray protection7
- E05B 37/0062Operation by feeling4
- E05B 37/0065Master combination1
Recent patents
- Dual unlock padlock with reset function29 Sep 2026US 12,747,611 B2The Sun Lock Company Ltd.
- Electromechanical locks and related methods29 Sep 2026US 12,747,614 B2Lock II, LLC
- Anti-detection combination lock8 Sep 2026US 12,729,563 B2Real Locks & Security Co., Ltd.
- Electronic lock and a method and system for controlling an electronic lock25 Aug 2026US 12,716,267 B2Igloocompany Pte. Ltd.
- Combination lock with override key25 Aug 2026US 12,716,269 B2Security People, Inc.
- Combination lock with code reset function8 Oct 2026US 2026/0308937 A1Martin Lehmann GmbH & Co. KG
- A locking device for inflatable vehicles17 Sep 2026US 2026/0275765 A1
- Combination lock with dual unlocking modes10 Sep 2026US 2026/0266092 A1Sinox Co., Ltd
- Alarm tag with combination access13 Aug 2026US 2026/0234967 A1Control Group Companies, LLC
- Cooler accessories23 Jul 2026US 2026/0208941 A1AOB Products Company
Most cited
By later US patents
- Combination lock1,028US 4,376,380 AJohn D. Brush & Co., Inc. · 1983
- Physical security system for portable computer271US 5,757,616 AHewlett-Packard Company · 1998
- Button operated combination lock148US 4,748,833 A501 Nagasawa Manufacturing Co., Ltd. · 1988
- Safes94US 4,669,394 A1987
- Privacy keypad87US 7,091,429 B2Yale Security Inc. · 2006