Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Locks keys and doors Patent Leaders in 2020 2020

Primary CPC class E05 · Section E

Rankings count each patent once by its primary Cooperative Patent Classification. All-time pages aggregate the full database; year pages use patent grant year.

Recent years: 2016201720182019202020212022202320242025

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 1,223 patents in 2025.peak 1,2231996: 592 patents19961997: 594 patents1998: 697 patents1999: 687 patents19992000: 769 patents2001: 636 patents2002: 746 patents20022003: 799 patents2004: 658 patents2005: 621 patents20052006: 681 patents2007: 589 patents2008: 563 patents20082009: 545 patents2010: 617 patents2011: 634 patents20112012: 763 patents2013: 893 patents2014: 925 patents20142015: 847 patents2016: 840 patents2017: 931 patents20172018: 825 patents2019: 1,155 patents2020: 1,106 patents20202021: 964 patents2022: 1,117 patents2023: 1,052 patents20232024: 1,190 patents2025: 1,223 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Francesco Cumbo 11 Magna Closures
2 Jordan R. Fountain 8 Whirlpool
3 Matthias Hucker 8 Geze Gmbh
#4 Donald Michael Perkins 7 Inteva Products
#5 John H. Martin 7 Level Home
#6 Kenneth D. Goto 7 Level Home
#7 Michael Scholz 7 Kiekert Ag
#8 Thomas E. King 7 Level Home
#9 Bryan Farris 6 Gecom
#10 David Chen 6 Vision Industries Group
#11 Holger Schiffer 6 Kiekert Ag
#12 Katsuyuki Ishiguro 6 Mitsui Kinzoku Act
#13 Kosta Papanikolaou 6 Ford
#14 Luke Liang 6 Vision Industries Group
#15 Brian Kepler 5 Gecom
#16 Calin Roatis 5 Triteq Lock And Security
#17 Dongjeong Kim 5 LG
#18 Larry Dean Elie 5 Ford
#19 Luciano Salice 5 Arturo Salice S.P.A.
#20 Stuart C. Salter 5 Ford
#21 Timothy J. Potter 5 Ford
#22 William Denison 5 Triteq Lock And Security
#23 Atsushi Muramatsu 4 Tokai Rubber Industries
#24 Christian Herrmann 4 Bauer Maschinen Gmbh
#25 Christopher Matthew Radjewski 4 Ford
#26 David Brian Glickman 4 Ford
#27 David R. Hall 4 Hall Labs
#28 Glen Paesano 4 Vision Industries Group
#29 Hisashi Nakasone 4 Piolax
#30 Howard Paul Tsvi Linden 4 Ford
#31 Jerome Miles 4 Hall Labs
#32 Jeff A. Wallace 4 Ford
#33 J. Clayton Miller 4 Cm Tech Co.
#34 Joseph W. Baumgarte 4 Schlage Lock Company
#35 John Wayne Jaranson 4 Ford
#36 Kenton H. Barker 4 Schlage Lock Company
#37 Matthias HEPPNER 4 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft
#38 Marco Taurasi 4 Magna Closures
#39 Michael M. Azzouz 4 Ford
#40 Olivier Gerardiere 4 Continental Automotive France
#41 Paul Kenneth Dellock 4 Ford
#42 Peter Malenkovic 4 Schlage Lock Company
#43 Robert F. Novak 4 Ford
#44 Satoshi Shibayama 4 Aisin Seiki Kabushiki Kaisha
#45 Tarakorn Soonthornwinate 4 Toyota
#46 Takashi Takizawa 4 Honda Motor Co.
#47 Yoshiki Ishikawa 4 Toyota
#48 Aaron Martin 3 Intel
#49 Adam M. Litwinski 3 Schlage Lock Company
#50 Adithya G. Shetty 3 Schlage Lock Company
#51 Alan M. Dixon 3 Larson Manufacturing Company Of South Dakota
#52 Ali Y. Duale 3 IBM
#53 Allen E. Lee 3 Larson Manufacturing
#54 Amir Raz 3 Dan Raz
#55 Asmahan Ali 3 IBM
#56 Asil T. Gokcebay 3 Digilock Asia
#57 Brian C. Eickhoff 3 Schlage Lock Company
#58 Brian K. Lickfelt 3 Honda Motor Co.
#59 Brian Edward Walls 3 Schlage Lock Company
#60 Bryan P. Zacher 3 Larson Manufacturing Company Of South Dakota
#61 Carsten Fuchs 3 Kiekert Ag
#62 Cedric Ketels 3 Faurecia Automotive Seating
#63 Daniel H. Kindstrand 3 Schlage Lock Company
#64 David Rosales 3 Brose Schließsysteme Gmbh & Co. Kommanditgesellschaft
#65 Douglas John Criddle 3 Amesbury Group
#66 Douglas A. Holmes 3 Schlage Lock Company
#67 Dominik Scheffler 3 Hanchett Entry Systems
#68 Ehab Kamal 3 Huf North America Automotive Parts Manufacturing
#69 Enpin Xia 3 Qingdao Haier Joint Stock Co.
#70 Francis Colligan 3 Accurate Lock & Hardware Co.
#71 Frank A. Richards 3 Toyota
#72 Gary E. Tagtow 3 Amesbury Group
#73 Hao Zhang 3 Qingdao Haier Joint Stock Co.
#74 Ian J. Dow 3 Inteva Products
#75 Ioan Dorin Ilea 3 Magna Closures
#76 James J. Collene 3 Mansfield Engineered Components
#77 James J. Ferri 3 Magna Closures
#78 James J. Fitzgibbon 3 The Chamberlain Group
#79 Jack R. Lehner, Jr. 3 Schlage Lock Company
#80 James N. Nelsen 3 General Motors
#81 James C. O'Kane 3 General Motors
#82 Jeffrey A. Grant 3 Invue Security Products
#83 Jia Sen Qiu 3 Cmech (Guangzhou)
#84 John R. Rice 3 Npf Limited
#85 Jordan A. Richter 3 Larson Manufacturing Company Of South Dakota
#86 Joseph Scheuring 3 Magna Closures
#87 Julien Rea 3 Faurecia Interior Systems
#88 Kevin Lamm 3 Honda Motor Co.
#89 Kelly D. Nordgaard 3 Larson Manufacturing Company Of South Dakota
#90 Livianu Dorin Puscas 3 Ford
#91 Louis David Thomas 3 Quintel Technology Limited
#92 Luciano Bacchetti 3 In & Tec S.R.L.
#93 Lynn D. Da Deppo 3 Huf North America Automotive Parts Manufacturing
#94 Manuel Griesmann 3 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft
#95 Manjunatha Ramakrishna 3 Schlage Lock Company
#96 Michael Lee Anderson 3 Amesbury Group
#97 Michael W. Kondratuk 3 Larson Manufacturing Company Of South Dakota
#98 Mitsuhiro Okada 3 Tokyo Electron Limited
#99 Michael A. Webb 3 Hanchett Entry Systems
#100 Mustafa Y. Mah 3 IBM

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Schlage Lock Company 46
2 Ford 45
3 Kiekert Ag 28
#4 Magna Closures 20
#5 General Motors 18
#6 Toyota 17
#7 Aisin Seiki Kabushiki Kaisha 16
#8 Hyundai Motor 14
#9 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft 12
#10 Kia Motors 12
#11 Mitsuba 12
#12 Mitsui Kinzoku Act 11
#13 Gecom 10
#14 Illinois Tool Works 10
#15 Inteva Products 10
#16 Unknown 9
#17 Geze Gmbh 8
#18 Honda Motor Co. 8
#19 Huf Huelsbeck & Fuerst GmbH & Co. KG 8
#20 Amesbury Group 7
#21 Level Home 7
#22 Hanchett Entry Systems 6
#23 Julius Blum Gmbh 6
#24 Pyeong Hwa Automotive Co. 6
#25 Spectrum Brands 6
#26 Vision Industries Group 6
#27 IBM 6
#28 LG 6
#29 Alcoa 5
#30 Arturo Salice S.P.A. 5
#31 Cmech (Guangzhou) 5
#32 Magna Closures S.P.A. 5
#33 Shiroki 5
#34 The Boeing 5
#35 Triteq Lock And Security 5
#36 BMW 4
#37 Continental Automotive France 4
#38 Continental Automotive Gmbh 4
#39 Dewalch Technologies 4
#40 Hall Labs 4
#41 Larson Manufacturing Company Of South Dakota 4
#42 Overhead Door 4
#43 Pella 4
#44 Piolax 4
#45 Sargent Manufacturing 4
#46 Sugatsune Kogyo Co. 4
#47 The Chamberlain Group 4
#48 Acco Brands 3
#49 Accurate Lock & Hardware Co. 3
#50 Andersen 3
#51 Assa Abloy Accessories And Door Controls Group 3
#52 Caldwell Manufacturing Company North America 3
#53 Dan Raz 3
#54 Denso 3
#55 Digilock Asia 3
#56 Faraday & Future 3
#57 Faurecia Interior Systems 3
#58 Fca Us Llc. 3
#59 Grass Gmbh 3
#60 Haier Us Appliance Solutions 3
#61 Huf North America Automotive Parts Manufacturing 3
#62 Invue Security Products 3
#63 Lock Ii 3
#64 Mansfield Engineered Components 3
#65 Multimatic 3
#66 Qingdao Haier Joint Stock Co. 3
#67 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. 3
#68 The Eastern 3
#69 Titus D.O.O. Dekani 3
#70 Truth Hardware 3
#71 U-Shin Italia S.P.A 3
#72 Westinghouse Air Brake 3
#73 Won-Door 3
#74 Lockheed Martin 3
#75 Amazon 2
#76 Apple 2
#77 Adac Plastics 2
#78 Airbus Helicopters Deutschland Gmbh 2
#79 Alpha 2
#80 Ami Industries 2
#81 A. Raymond Et Cie 2
#82 Assa Abloy Limited 2
#83 Austin Hardware & Supply 2
#84 Axtuator Oy 2
#85 Ballogy 2
#86 Barrette Outdoor Living 2
#87 Brose Fahrzeugteile Gmbh & 2
#88 Brose Fahrzeugteile Gmbh & Co. Kg, Hallstadt 2
#89 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt 2
#90 Brose Schliessysteme 2
#91 Brose Schließsysteme Gmbh & Co. Kommanditgesellschaft 2
#92 Commscope Technologies 2
#93 Compal Electronics 2
#94 Dell Products 2
#95 Delta Lock Company 2
#96 Dr. Ing. H.C. F. Porsche Ag 2
#97 Hampton Products International 2
#98 Harper Engineering 2
#99 Havenlock 2
#100 Hi-Lex 2