Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Doors and windows Patent Leaders in 2021 2021

Primary CPC class E06 · 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 575 patents in 2020.peak 5751996: 316 patents19961997: 327 patents1998: 361 patents1999: 390 patents19992000: 435 patents2001: 380 patents2002: 431 patents20022003: 363 patents2004: 348 patents2005: 304 patents20052006: 300 patents2007: 229 patents2008: 182 patents20082009: 199 patents2010: 338 patents2011: 316 patents20112012: 381 patents2013: 437 patents2014: 469 patents20142015: 439 patents2016: 471 patents2017: 480 patents20172018: 420 patents2019: 502 patents2020: 575 patents20202021: 488 patents2022: 429 patents2023: 423 patents20232024: 450 patents2025: 458 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Mark A. Flannery 13 Regalo International
2 Richard N. Anderson 10 Hunter Douglas
3 David A. Kirby 7 Lutron Technology Company
#4 Matthew A. Willms 7 Regalo International
#5 Stephen P. Hebeisen 7 Mechoshade Systems
#6 Tomasz Jaskiewicz 7 Endura Products
#7 Alex Greenspan 5 Mechoshade Systems
#8 Gary T. Schultze 5 Regalo International
#9 Joel Berman 5 Unknown
#10 Michael P. Lane 5 Regalo International
#11 Stephen P. Smith 5 Hunter Douglas
#12 Xingbang Lei 5 Leafy Windoware Co.
#13 Zhenbang Lei 5 Leafy Windoware Co.
#14 Eugene W. Thompson 4 Hunter Douglas
#15 Jorg Bohlen 4 Hunter Douglas Industries B. V.
#16 Kenneth M. Faller 4 Hunter Douglas
#17 Kevin T. MacDonald 4 Endura Products
#18 Ronald Holt 4 Hunter Douglas
#19 Stephen T. Wisecup 4 Hunter Douglas
#20 Tsung-Hsiang Wang 4 Demby Development Co.
#21 Wendell B. Colson 4 Hunter Douglas
#22 Adam Kendall 3 Endura Products
#23 Cameron Miles Wyatt 3 Wws Acquisition
#24 Donald E. Fraser 3 Hunter Douglas
#25 Duane Fier 3 Andersen
#26 Eiichi Uriu 3 Panasonic
#27 Eric Johnson 3 Endura Products
#28 Hiroyuki Abe 3 Japan Display
#29 James M. Anthony 3 Hunter Douglas
#30 James Geiger 3 Geigtech East Bay
#31 Jeffrey L. Spray 3 Hunter Douglas
#32 Kevin M. Dann 3 Hunter Douglas
#33 Keng-Hao Nien 3 Nien Made Enterprise Co.
#34 Lin Chen 3 Nien Made Enterprise Co.
#35 Michael Campagna 3 Crestron Electronics
#36 Michael S. Goldberg 3 Hunter Douglas
#37 Morgan Donohue 3 Erdman Automation
#38 Nicholas E. Beattie 3 Regalo International
#39 Norbert Marocco 3 Shade-O-Matic Limited
#40 Pierre Schneider 3 Agc Glass Europe
#41 Richard J. Mazur 3 Westinghouse Air Brake
#42 Robert C. Allen 3 Masonite
#43 Robert E. Fisher 3 Hunter Douglas
#44 Stephen R. Haarer 3 Hunter Douglas
#45 Timothy D. Gouge 3 Masonite
#46 William A. Briese 3 Ged Integrated Solutions
#47 Abderrazek Ben Trad 2 Agc
#48 Alan M. Dixon 2 Larson Manufacturing Company Of South Dakota
#49 Anoop Agrawal 2 Donnelly
#50 Antoine Dubois 2 Kinestral Technologies
#51 Brandon Nichols 2 Kinestral Technologies
#52 Bryan P. Zacher 2 Larson Manufacturing Company Of South Dakota
#53 Carsten Rud Jensen 2 Vkr Holding A/S
#54 Chien-Fong Huang 2 Teh Yor Co.
#55 Chin-Tien Huang 2 Teh Yor Co.
#56 Chien-Chih Lai 2 Comchip Technology Co.
#57 Clifford J. Weber 2 Ged Integrated Solutions
#58 Curtis Weavers 2 PepsiCo
#59 Daniel Fluckey 2 Hunter Douglas
#60 Daniel M. Fogarty 2 Hunter Douglas
#61 David R. Hall 2 Hall Labs
#62 David E. Kingman 2 Apple
#63 David McNeill 2 Kabam,
#64 David Brooks Simonton 2 —
#65 Derek C. Scott 2 Apple
#66 Edward J. Blair 2 Lutron Electronics Co.
#67 Eric Bjergaard 2 Cardinal Ig
#68 Eugene Miroshnichenko 2 Mechoshade Systems
#69 Fang Lin 2 Crestron Electronics
#70 Galen B. Rhodes 2 Hunter Douglas
#71 Gary Sprague 2 C.R. Laurence Co.
#72 Giovanni Nicolosi 2 Pellini S.P.A.
#73 Guillermo Garcia 2 Heliotrope Technologies
#74 Hsien-Te HUANG 2 Unknown
#75 Hung-Hao Chen 2 TSMC
#76 Igor Cemalovic 2 Technoform Bautec Holding Gmbh
#77 Jack Laurence Albright 2 —
#78 Jacob Blackburn 2 Wells Fargo Bank, N.A.
#79 Jason Blush 2 Guardian Glass
#80 Jason Holt 2 Heliotrope Technologies
#81 Jammey A. Rawden 2 Larson Manufacturing Company Of South Dakota
#82 Jaron E. Vos 2 Pella
#83 Jason M. Walsh 2 Masonite
#84 Jeremiah Boe 2 Andersen
#85 Jean-Luc Gentil 2 Dorel Juvenile Group
#86 John P. Cronin 2 Ajjer L.L.C.
#87 Joseph E. Kovach 2 Hunter Douglas
#88 John C. St. Clair 2 —
#89 Julien JEANFILS 2 Agc Glass Europe
#90 Kamal Alameh 2 Tropiglas Technologies
#91 Kazuya Fujino 2 Nippon Sheet Glass Company, Limited
#92 Kasey L. Pipo 2 Regalo International
#93 Kelly D. Nordgaard 2 Larson Manufacturing Company Of South Dakota
#94 Kent A. Smith 2 Hunter Douglas
#95 Khaled Ahmed 2 Intel
#96 Kraig Hoekstra 2 Wws Acquisition
#97 Lars Koop 2 Hunter Douglas Industries B. V.
#98 Lori L. Adams 2 Polyceed
#99 Lok Yung Wong 2 Gliderol Doors (S) Pte
#100 Luke A. Thompson 2 Larson Manufacturing Company Of South Dakota

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Hunter Douglas 36
2 Unknown 15
3 Endura Products 10
#4 Lutron Technology Company 10
#5 Regalo International 9
#6 Masonite 8
#7 Mechoshade Systems 7
#8 Hunter Douglas Industries B. V. 6
#9 Leafy Windoware Co. 5
#10 Andersen 4
#11 Carlson Pet Products 4
#12 Crestron Electronics 4
#13 Demby Development Co. 4
#14 Guardian Glass 4
#15 Nien Made Enterprise Co. 4
#16 Pella 4
#17 Saint-Gobain Glass France 4
#18 Somfy Activites Sa 4
#19 Vkr Holding A/S 4
#20 Apple 3
#21 Agc Glass Europe 3
#22 Cardinal Ig 3
#23 Erdman Automation 3
#24 Ged Integrated Solutions 3
#25 Geigtech East Bay 3
#26 Larson Manufacturing Company Of South Dakota 3
#27 Maxxmar 3
#28 Overhead Door 3
#29 Teh Yor Co. 3
#30 Wws Acquisition 3
#31 Panasonic 3
#32 Ching Feng Home Fashions Co. 2
#33 Core Distribution 2
#34 Dorel Juvenile Group 2
#35 E Ink Holdings 2
#36 Ensinger Gmbh 2
#37 Gliderol Doors (S) Pte 2
#38 Hall Labs 2
#39 Heliotrope Technologies 2
#40 Kinestral Technologies 2
#41 King Abdulaziz University 2
#42 Nippon Sheet Glass Company, Limited 2
#43 Polyceed 2
#44 Sheen World Technology 2
#45 Sierra Pacific Industries 2
#46 Sorrell Quarters 2
#47 Technoform Bautec Holding Gmbh 2
#48 Tropiglas Technologies 2
#49 Vitro Flat Glass 2
#50 Werner 2
#51 Wexenergy 2
#52 Wintec Korea 2
#53 Canon 2
#54 LG 2
#55 PepsiCo 2
#56 Aerovironment 1
#57 Agc 1
#58 Agc Flat Glass North America 1
#59 Agc Vidros Do Brasil Ltda 1
#60 Alcoa 1
#61 Ameristar Perimeter Security Usa 1
#62 Amesbury Group 1
#63 Assa Abloy (Schweiz) Ag 1
#64 Barrette Outdoor Living 1
#65 B/E Aerospace 1
#66 Becoflex 1
#67 Bühler Motor Gmbh 1
#68 Buckingham Manufacturing Company 1
#69 Ca 1
#70 Caltech 1
#71 Cardinal Cg 1
#72 Cooper Technologies 1
#73 Cornellcookson 1
#74 Cortex 1
#75 Crucialtec Co. 1
#76 Defender Screens International 1
#77 Dorel Home Furnishings 1
#78 Fiber Composites 1
#79 Forel S.P.A. 1
#80 Formetco 1
#81 Glass Technology 1
#82 Guangdong Kin Long Hardware Products Co. 1
#83 Hawkes Design And Consulting, Llc. 1
#84 Home Depot Product Authority 1
#85 Home Improvement Systems 1
#86 Hunter Douglas Industries Switzerland Gmbh 1
#87 Huntsman International 1
#88 Hurricane Safety Systems 1
#89 Hyundai Motor 1
#90 Ikea Supply Ag 1
#91 Innomotive Solutions Group 1
#92 Integrity Products & Supplies 1
#93 Intex Marketing 1
#94 Iveco Magirus Ag 1
#95 Johnson Controls Technology 1
#96 Kaneka 1
#97 Katch Kan Holdings 1
#98 Kia Motors 1
#99 Kidco 1
#100 Knorr-Bremse Gesellschaft Mit Beschränkter Haftung 1