Doors and windows Patent Leaders

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: 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Patents per Year

Top Inventors

Rank ↑	Inventor ↕	Patents ↕	Primary Company ↕
1	Wendell B. Colson	143	Hunter Douglas
2	Richard N. Anderson	141	Hunter Douglas
3	Mark A. Flannery	101	Regalo International
#4	Willis Jay Mullet	74	Wayne-Dalton
#5	Ren Judkins	72	Hunter Douglas
#6	David A. Kirby	69	Lutron Technology Company
#7	Stephen P. Hebeisen	64	Mechoshade Systems
#8	N. Ryan Moss	60	Wing Enterprises, Incorporated
#9	Peter Lisec	50	—
#10	Paul G. Swiszcz	48	Hunter Douglas
#11	Ming Nien	47	Nien Made Enterprise Co.
#12	Donald E. Fraser	46	Hunter Douglas
#13	Ralph G. Jelic	42	Hunter Douglas
#14	David R. Hall	40	Hall Labs
#15	Lin Chen	40	Nien Made Enterprise Co.
#16	Eugene Miroshnichenko	39	Mechoshade Systems
#17	Brian B. Russell	38	Wing Enterprises, Incorporated
#18	Stephen T. Wisecup	38	Hunter Douglas
#19	Chin-Tien Huang	37	Teh Yor Co.
#20	Thomas W. Parker	37	Werner
#21	Xi Ming Liarno	37	Mechoshade Systems
#22	Edward J. Blair	36	Lutron Electronics Co.
#23	James V. Miller	36	Qualitas Manufacturing Incorporated
#24	Bernard Kraeutler	35	Nergeco
#25	James M. Anthony	35	Hunter Douglas
#26	Joel Berman	35	Unknown
#27	Jorg Bohlen	35	Hunter Douglas Industries B. V.
#28	Joseph E. Kovach	35	Hunter Douglas
#29	Li-Ming Cheng	35	Zipshade Industrial (B.V.I.)
#30	Robert C. Allen	35	Masonite
#31	Norbert Marocco	34	Shade-O-Matic Limited
#32	Steven R. Haarer	34	Hunter Douglas
#33	Steven K. Lynch	34	Masonite
#34	Emily Brimhall	33	Hall Labs
#35	Timothy B. McGlinchy	33	Ged Integrated Solutions
#36	Tomasz Jaskiewicz	33	Endura Products
#37	Daniel M. Fogarty	32	Hunter Douglas
#38	Stephen P. Smith	32	Hunter Douglas
#39	Sean R. Peterson	31	Wing Enterprises, Incorporated
#40	Stephen Clark Brown	31	View
#41	Robert E. Fisher	30	Hunter Douglas
#42	Gary M. Jonas	29	Wing Enterprises, Incorporated
#43	Kevin M. Dann	29	Hunter Douglas
#44	Kenneth M. Faller	29	Hunter Douglas
#45	Ronald Holt	29	Hunter Douglas
#46	John Grismer	28	Ged Integrated Solutions
#47	Luc Lafond	28	Tremco Incorporated
#48	William A. Briese	28	Ged Integrated Solutions
#49	Austin Carlson	27	Hall Labs
#50	Peter W. Ogden, Jr.	27	Lutron Technology Company
#51	Po-Yu Chen	27	Sheen World Technology
#52	Samuel F. Chambers	27	Lutron Electronics Co.
#53	Stephen Lundy	26	Lutron Technology Company
#54	Eiichi Uriu	25	Panasonic
#55	Jason M. Walsh	25	Masonite
#56	Tser Wen Chou	25	Unknown
#57	Yu-Che Wen	25	Nien Made Enterprise Co.
#58	Alex Greenspan	24	Mechoshade Systems
#59	Eric Lagarde	24	Somfy Sas
#60	Eugene W. Thompson	24	Hunter Douglas
#61	Fu-Lai Yu	24	Teh Yor Co.
#62	Karl Lenhardt	24	Lenhardt Maschinenbau Gmbh
#63	Michael Campagna	24	Crestron Electronics
#64	Paul Trpkovski	24	Ravin Crossbows
#65	Porter R. Million	24	Carlson Pet Products
#66	Richard Scott Hand	24	Current Products Company
#67	Andrew J. Toti	23	Unknown
#68	Kyle G. Astor	23	Werner
#69	Robert D. Beggs	23	Werner
#70	Terrence M. Drew	23	Hunter Douglas
#71	David P. Hartman	22	Hunter Douglas
#72	Keng-Hao Nien	22	Nien Made Enterprise Co.
#73	Matthew A. Willms	22	Regalo International
#74	Chung-Hsien Hsieh	21	Htc
#75	Darrin W. Brunk	21	The Watt Stopper
#76	Hiroyuki Abe	21	Japan Display
#77	Jerry G. Crittenden	21	Masonite International
#78	John D. Rupel	21	Hunter Douglas
#79	Karine Luetgert	21	Masonite
#80	Philip Ng	21	AMD
#81	Scott V. Thomsen	21	Guardian Industries
#82	Timothy D. Gouge	21	Masonite
#83	Charles E. Schiedegger	20	Tapco International
#84	Lars Koop	20	Hunter Douglas Industries B. V.
#85	Michael P. Lane	20	Regalo International
#86	Tai-Ping Liu	20	—
#87	Tzong-Fu Lin	20	Whole Space Industries
#88	Utku Ahmet Özden	20	Vkr Holding A/S
#89	Vijayen S. Veerasamy	20	Guardian Industries
#90	Wen Ying Liang	20	Ching Feng Home Fashions Co.
#91	Gerhard Reichert	19	Edgetech I.G.
#92	Justin M. Zernhelt	19	Lutron Technology Company
#93	Mario M. Marocco	19	Maxxmar
#94	Roger Palmer	19	Newell Window Furnishings
#95	Steven B. Swartzmiller	19	Masonite
#96	Duane Fier	18	Andersen
#97	Gary T. Schultze	18	Regalo International
#98	Jason T. Throne	18	Hunter Douglas
#99	Kent A. Smith	18	Hunter Douglas
#100	Masataka Nonaka	18	Panasonic

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Hunter Douglas	495
2	Unknown	312
3	Nien Made Enterprise Co.	136
#4	Masonite	131
#5	Werner	102
#6	Hunter Douglas Industries B. V.	92
#7	Andersen	81
#8	Vkr Holding A/S	79
#9	Saint-Gobain Glass France	77
#10	Lutron Technology Company	75
#11	Overhead Door	74
#12	Endura Products	68
#13	Lutron Electronics Co.	68
#14	Guardian Industries	67
#15	Mechoshade Systems	67
#16	Pella	67
#17	Rite-Hite Holding	65
#18	Hunter Douglas International N.V.	62
#19	Crestron Electronics	49
#20	Carlson Pet Products	48
#21	Guardian Glass	46
#22	Teh Yor Co.	45
#23	Newell Window Furnishings	43
#24	Wing Enterprises, Incorporated	43
#25	Regalo International	41
#26	Ged Integrated Solutions	40
#27	Somfy Sas	39
#28	Milgard Manufacturing	37
#29	Nippon Sheet Glass Company, Limited	37
#30	Odl, Incorporated	37
#31	Wayne-Dalton	36
#32	Cardinal Ig	35
#33	Newell Operating	35
#34	Ching Feng Home Fashions Co.	33
#35	Ching Feng Blinds Ind. Co.	32
#36	Somfy Activites Sa	32
#37	View	32
#38	Springs Window Fashions	31
#39	Jeld-Wen	30
#40	Marvin Lumber And Cedar Company	29
#41	Won-Door	29
#42	Comfortex	28
#43	Tapco International	28
#44	Whole Space Industries	28
#45	Yoshida Kogyo K.K.	28
#46	Panasonic	28
#47	Kawneer Company	27
#48	Cosco Management	26
#49	Alcoa	25
#50	Nergeco	25
#51	Ppg Industries	25
#52	Somfy	25
#53	Assa Abloy Entrance Systems Ab	24
#54	Little Giant Ladder Systems	24
#55	Ppg Industries Ohio	24
#56	Schlegel	24
#57	The Boeing	24
#58	Black & Decker	23
#59	Agc Glass Europe	22
#60	Cornellcookson	22
#61	Hall Labs	22
#62	Rolscreen	22
#63	Rytec	22
#64	Verosol Usa	22
#65	Nan Ya Plastics	21
#66	Nichibei Co.	21
#67	3M	19
#68	Dorma Gmbh + Co. Kg	19
#69	Levolor	19
#70	Springs Window Fashions Division	19
#71	LG	19
#72	Harmonic Design	18
#73	Levolor Lorentzen	18
#74	Quanex	18
#75	ITRI	17
#76	Louver-Lite Limited	17
#77	The Watt Stopper	17
#78	Emerson Electric	16
#79	Saint-Gobain Vitrage	16
#80	V. Kann Rasmussen Industri A/S	16
#81	Ykk Architectural Products	16
#82	Graber Industries	15
#83	Guardian-I	15
#84	Lenhardt Maschinenbau Gmbh	15
#85	Lisec Austria Gmbh	15
#86	Qmotion, Incorporated	15
#87	Rollease	15
#88	Tachikawa	15
#89	Therma-Tru	15
#90	Tricam Industries	15
#91	General Motors	15
#92	Core Distribution	14
#93	Edgetech I.G.	14
#94	Geigtech East Bay	14
#95	Glass Equipment Development	14
#96	Maxxmar	14
#97	Mckeon Rolling Steel Door Co.	14
#98	Metaco	14
#99	Plastpro 2000	14
#100	Qualitas Manufacturing Incorporated	14

Doors and windows Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies