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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Locks keys and doors

Locks keys and doors Patent Leaders in 2018 2018

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 Kosta Papanikolaou 9 Ford
2 John Wayne Jaranson 8 Ford
3 Larry Dean Elie 8 Ford
#4 Michael M. Azzouz 8 Ford
#5 Robert F. Novak 8 Ford
#6 Thorsten Bendel 8 Kiekert Ag
#7 Jeff A. Wallace 7 Ford
#8 Timothy J. Potter 7 Ford
#9 Donald Michael Perkins 5 Inteva Products
#10 Gerald J. Heath 5 Ford
#11 Luciano Bacchetti 5 In & Tec S.R.L.
#12 Simone Ilardo 5 U-Shin Italia S.P.A
#13 Andreas Beck 4 Huf Huelsbeck & Fuerst GmbH & Co. KG
#14 Daniel Carl Bejune 4 Ford
#15 David Chen 4 Vision Industries Group
#16 David Rosales 4 Brose Schließsysteme Gmbh & Co. Kommanditgesellschaft
#17 Donald P. Iacovoni 4 Ford
#18 Luke Liang 4 Vision Industries Group
#19 Paul L. Heirtzler, Jr. 4 Ford
#20 Rajesh K. Patel 4 Ford
#21 Tong Liang 4 Vision Industries Group
#22 Vittorio Giaccone 4 U-Shin Italia S.P.A
#23 Amir Raz 3 Dan Raz
#24 Boris Kruedener 3 Grass Gmbh
#25 Brian Westgarth 3 Ford
#26 Dennis McGregor 3 Hardware Resources
#27 Dustin Lawhon 3 Assa Abloy Accessories And Door Controls Group
#28 Francisco Javier Vazquez 3 Inteva Products
#29 Guenther Zimmer 3 Basf Se
#30 Hidefumi Katayama 3 Aisin Seiki Kabushiki Kaisha
#31 Hiroyuki Kouzuma 3 Kabushiki Kaisha Honda Lock
#32 Ian J. Dow 3 Inteva Products
#33 I-Ting Shen 3 Perfect
#34 James J. Fitzgibbon 3 The Chamberlain Group
#35 Jay Sofianek 3 Caldwell Manufacturing Company North America
#36 Jeffrey A. Grant 3 Invue Security Products
#37 Joseph Scheuring 3 Magna Closures
#38 Karsten Barth 3 Kiekert Ag
#39 Katsumi Chono 3 Aisin Seiki Kabushiki Kaisha
#40 Karl Lai 3 The Sun Lock Company Limited
#41 Larry Gene Corwin, Jr. 3 Hanchett Entry Systems
#42 Lucas Jeffrey Stanton 3 Hampton Products International
#43 Martin Witte 3 Huf Huelsbeck & Fuerst GmbH & Co. KG
#44 Martin Zimmer 3 Liebherr-Elektronik Gmbh
#45 Michael Wittelsbuerger 3 Brose Schliessysteme
#46 Mohammed Maksood Ali 3 Schlage Lock Company
#47 Paul W. Alexander 3 General Motors
#48 Peter E. Zasowski 3 Whirlpool
#49 Roger Herbert Culver 3 General Motors
#50 Robert Dallos, Jr. 3 General Motors
#51 Samuel C. Medawar 3 —
#52 Alfredo Martinez 2 Inteva Products
#53 AN SZU HSU 2 First Dome
#54 Andrew Marsden 2 Elbee Pty
#55 Andrew Warburton 2 Jaguar Land Rover Limited
#56 Andy Wu 2 Quanzhou Yida Home Appliance Industry Co.
#57 Armin Handke 2 Kiekert Ag
#58 Arne Liebscher 2 Dorma Gmbh + Co. Kg
#59 Aragorn Zolno 2 General Motors
#60 Axel Julio Ramm 2 Whirlpool
#61 Bernd Ette 2 Volkswagen
#62 Bok Eng Cheah 2 Intel
#63 Brian Bitz 2 Microsoft
#64 Brian R. Fournier 2 Sargent Manufacturing
#65 Brian White 2 Mansfield Engineered Components
#66 Christian Barmscheidt 2 Kiekert Ag
#67 Christian Carrier 2 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government
#68 Chia-Hui Chen 2 TSMC
#69 Chih-Yuan Chen 2 Anpec Electronics
#70 Christopher J. Fawcett 2 Invue Security Products
#71 Chung Peng Jackson Kong 2 Intel
#72 Chean Wang Ng 2 Multimatic
#73 Chun-Chiang Wang 2 King Slide Works Co.
#74 David Frank Borenstein 2 Unknown
#75 David McAllister Bradley 2 Uatc
#76 Danijel Kozlovic 2 Titus D.O.O. Dekani
#77 David Purdy 2 Uber Technologies
#78 Damond Maurice Smalls 2 Assa Abloy Accessories And Door Controls Group
#79 Daniel A. Wright 2 IBM
#80 Dirk Müller 2 Huf Huelsbeck & Fuerst GmbH & Co. KG
#81 Douglas G. Broadhead 2 Warren Industries
#82 Edwin Dizon Manalang 2 Unknown
#83 Ehab Kamal 2 Huf North America Automotive Parts Manufacturing
#84 Elias Karnutsch 2 Hoppe Holding Ag
#85 Eric A. Eckberg 2 IBM
#86 Erik Schattenmann 2 Magna Closures
#87 Evangelos P. Skoures 2 Ford
#88 Francesco Cumbo 2 Magna Closures
#89 Gabrijel Rejc 2 Efaflex Inzeniring D.O.O. Ljubljana
#90 Glenn Ford 2 Warminster Fiberglass
#91 Goro Nakamura 2 Yazaki
#92 Gregory A. Header 2 Unknown
#93 Grace Show-Yin Wang 2 Weider Metal
#94 Gregory Waugh 2 —
#95 Guo Hua Liu 2 Hampton Products International
#96 Han Gui Xiao 2 Hampton Products International
#97 Hiroto Fujiwara 2 Kabushiki Kaisha Honda Lock
#98 Hirokazu Suzumura 2 Aisin Seiki Kabushiki Kaisha
#99 H. Paul Tsvi Linden 2 Ford
#100 Howe Yin Loo 2 Intel

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Ford 49
2 Kiekert Ag 19
3 Aisin Seiki Kabushiki Kaisha 18
#4 Schlage Lock Company 15
#5 Hyundai Motor 13
#6 Unknown 11
#7 Magna Closures 10
#8 Huf Huelsbeck & Fuerst GmbH & Co. KG 9
#9 Inteva Products 9
#10 General Motors 9
#11 Honda Motor Co. 8
#12 Caldwell Manufacturing Company North America 6
#13 Hanchett Entry Systems 6
#14 Kabushiki Kaisha Honda Lock 6
#15 Mitsui Kinzoku Act 6
#16 Brose Schließsysteme Gmbh & Co. Kommanditgesellschaft 5
#17 Hampton Products International 5
#18 Robert Bosch Gmbh 5
#19 Taiwan Fu Hsing Industrial Co. 5
#20 IBM 5
#21 LG 5
#22 Toyota 5
#23 Denso 4
#24 Sargent Manufacturing 4
#25 Shiroki 4
#26 Spectrum Brands 4
#27 The Chamberlain Group 4
#28 Uber Technologies 4
#29 U-Shin Italia S.P.A 4
#30 Vision Industries Group 4
#31 Yale Security 4
#32 Samsung 4
#33 Abus August Bremicker Söhne Kg 3
#34 Alpha 3
#35 Amesbury Group 3
#36 Dan Raz 3
#37 Dormakaba Deutschland Gmbh 3
#38 Fanuc 3
#39 Fca Us Llc. 3
#40 Grass Gmbh 3
#41 Grass Gmbh & Co. Kg 3
#42 Hardware Resources 3
#43 In & Tec S.R.L. 3
#44 Invue Security Products 3
#45 Julius Blum Gmbh 3
#46 Kia Motors 3
#47 Mitsubishi Electric 3
#48 Nifco 3
#49 Overhead Door 3
#50 Sinox Company 3
#51 The Boeing 3
#52 Valeo S.P.A. 3
#53 Volkswagen 3
#54 Westinghouse Air Brake 3
#55 Whirlpool 3
#56 Xiamen Make Security Technology Co. 3
#57 Google 3
#58 Apple 2
#59 Asmo Co. 2
#60 Assa Abloy Accessories And Door Controls Group 2
#61 Ballogy 2
#62 B/E Aerospace 2
#63 Cmech (Guangzhou) 2
#64 Delta Lock Company 2
#65 Dormakaba Canada 2
#66 Dura Operating 2
#67 Dynalloy 2
#68 Dynamic Closures 2
#69 Elbee Pty 2
#70 Elfa International Ab 2
#71 Filobe Co. 2
#72 Fireking Security Products 2
#73 First Dome 2
#74 Hanwit Precision Industries 2
#75 Henry Squire & Sons Holdings 2
#76 Hoppe Holding Ag 2
#77 Huf North America Automotive Parts Manufacturing 2
#78 John Evans' Sons, Incorporated 2
#79 Kem Hongkong Limited 2
#80 King Slide Technology Co. 2
#81 King Slide Works Co. 2
#82 Kyocera Document Solutions 2
#83 Magna Closures S.P.A. 2
#84 Mansfield Engineered Components 2
#85 Milgard Manufacturing 2
#86 Miller Edge 2
#87 Mitsuba 2
#88 Multimatic 2
#89 Nidec Sankyo 2
#90 Nuova Star S.P.A. 2
#91 Pemko Manufacturing Company 2
#92 Reflection Window Company 2
#93 Rite-Hite Holding 2
#94 Southco 2
#95 Sugatsune Kogyo Co. 2
#96 The Eastern 2
#97 The Sun Lock Company Limited 2
#98 Trimark 2
#99 Tti (Macao Commercial Offshore) Limited 2
#100 Warren Industries 2