List of prolific inventors
Worldwide utility patents
Table:
Inventor	# of patents	Country	Active	Main fields of invention	Ref

Shunpei Yamazaki	5426	Japan	1976-2019	Thin film transistors, Liquid crystal displays, Solar cells, Flash memory, OLED

Kia Silverbrook	4747	Australia	1994-2018	Printing, Digital paper, Internet, Electronics, CGI, Chemical, DNA, Lab-on-a-chip, MEMS, Mechanical, VLSI

Lowell L. Wood, Jr.	1848	USA	1977-2019	Various

Roderick A. Hyde	1748	USA	2001-2019	Various

Kangguo Cheng	1741	USA	2004-2019	Semiconductor device fabrication, Semiconductor memory, Semiconductor device

Jun Koyama	1372	Japan	1991-2019	Thin film transistors, Liquid crystal displays, OLED

Gurtej Sandhu	1315	India	1991-2019	Thin film processes and materials, VLSI, Semiconductor device fabrication

Paul Lapstun	1288	Australia	2000-2018	Printing, Digital paper, Internet, Electronics, CGI, VLSI

Clarence T. Tegreene	1152	USA	2000-2019	Various

Leonard Forbes	1106	Canada	1991-2019	Semiconductor Memories, CCDs, Thin film processes and materials, VLSI

Thomas Edison	1084	USA	1847(b)-1931(d)	Electric power, Lighting, Batteries, Phonograph, Cement, Telegraphy, Mining

Edward K. Y. Jung	1052	USA	1996-2019	Various

Shou-Shan Fan	1012	China	2006-2019	Carbon nanotubes and their applications

Donald E. Weder	1000	USA	1976-2017	Florist supplies

George Albert Lyon	993	Canada	1882(b)-1961(d)	Automotive, Stainless steel products

Jay S. Walker	958	USA	1998-2019	Gaming machines

John F. O'Connor	949	USA	1864(b)-1938(d)	Railway draft gearing

Michael J. Sullivan	949	USA	1977-2019	Golf balls

Rick Allen Hamilton II	926	USA	1999-2019	Various

Melvin De Groote	925	USA	1895(b)-1963(d)	Chemical de-emulsifiers

Jordin T. Kare	896	USA	1992-2019	Various

Francis H. Richards	894	USA	1850(b)-19??(d)	Mechanical, automation

Ahmadreza Rofougaran	848	USA	2002-2019	Radio Frequency Integrated Circuits

Nathan Myhrvold	846	USA	1994-2019	Various

Mark Malamud	817	USA	1997-2019	Various

Robert W. Lord	805	USA	2003-2019	Various

Royce A. Levien	801	USA	1997-2019	Various

Muriel Y. Ishikawa	789	USA	2002-2019	Various

William H. Eby	780	USA	1994-2019	Transgenic soybeans

Warren Farnworth	772	USA	1990-2017	Semiconductor packaging

Salman Akram	757	USA	1995-2019	Semiconductor packaging

Carleton Ellis	753	USA	1876(b)-1941(d)	Margarine, Polyester, Anti-knock gasoline, Paint stripper

Jeyhan Karaoguz	747	USA	1996-2019	Wireless communications, Computer networks

Hideo Ando	729	Japan	1983-2017	Optical recording

George Spector	722	USA	1976-1998	Gadgets, Toys

Austin L. Gurney	714	USA	1999-2019	Proteins, Antibodies

Elihu Thomson	696	UK	1853(b)-1937(d)	Electric power, Arc lamp, Electric motors, Lightning arrester, Arc welder

Tetsujiro Kondo	695	Japan	1987-2018	Signal processing, Image processing

Ali Khakifirooz	695	USA	2011-2019	Integrated Circuits, CMOS, Semiconductor device fabrication

William I. Wood	653	USA	1981-2016	Proteins, Antibodies

Simon R. Walmsley	651	Australia	1995-2015	Printing, Electronics, VLSI, Cryptography

Bruce B. Doris	642	USA	1995-2019	Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication

Audrey D. Goddard	625	USA	1997-2019	Proteins, Antibodies

John M. Santosuosso	624	USA	2001-2019	Various

Eric C. Leuthardt	610	USA	2006-2019	Medical devices

Edward J. Nowak	609	USA	1979-2019	Semiconductor device fabrication, Semiconductor memory, Semiconductor device

Jerome Lemelson	606	USA	1923(b)-1997(d)	Toys, Industrial robots, Cordless telephones, Fax machines, Videocassette recorders

Tadahiro Ohmi	597	Japan	1981-2018	Thin film processes and materials, Semiconductor device fabrication

Kie Y Ahn	596	USA	1976-2018	Thin film processes and materials, VLSI, Semiconductor device fabrication

Béla Barényi	595	Austria	1907(b)-1997(d)	Passive safety in automobiles

Paul J. Godowski	579	USA	1994-2014	Proteins, Antibodies

Artur Fischer	570	Germany	1976-2002	Fasteners, Construction toys

Devendra K. Sadana	570	India	1983-2019	Solar cells, OLED, Integrated Circuits, CMOS, DRAM, LEDs

Clifford A. Pickover	569	USA	1992-2019	Various

Louis L. Hsu	551	USA	1988-2016	Various

Chih-Chao Yang	548	USA	2003-2019	Integrated Circuits

Jeffrey P. Gambino	540	USA	1992-2019	MEMS, CMOS, BiCMOS, DRAM, Image Sensors, RF, Biosensors, 3D Integrated Circuits

Edwin H. Land	535	USA	1909(b)-1991(d)	Instant photography, Polarizing film

Victoria Y. H. Wood	532	USA	2009-2019	Various

Henri Dreyfus	524	Switzerland	1882(b)-1944(d)	Polymers, Synthetic fibers, Dyes

Clyde C. Farmer	513	USA	18??(b)-19??(d)	Railway air brakes

Heinz Focke	512	Germany	1976-2013	Cigarette packaging

Mark I. Gardner	511	USA	1994-2010	Consumer electronics, Energy, Computers, Semiconductors, Physics

Ravi K. Arimilli	508	India	1992-2019	Computer architecture, Semiconductor memory, Cache coherence, Symmetric multiprocessing

Anthony K. Stamper	506	USA	1998-2019	MEMS, CMOS, BiCMOS, Silicon-germanium

Louis H. Morin	503	USA	18??(b)-19??(d)	Fasteners, Locks, Bobbins

Ronald S. Cok	502	USA	1986-2019	OLED displays; image processing

Tobin A. King	501	Australia	2000-2018	Printing, Digital paper, Mechanical

Gregory J. Boss	491	USA	2008-2019	Various

Belgacem Haba	490	Algeria	1991-2019	Semiconductor manufacturing

Robert S. Langer	484	USA	1983-2019	Biotechnology, Drug delivery, Tissue engineering

James M. Hart	482	USA	1988-2019	Motor vehicle transmission

Jack A. Mandelman	481	USA	1987-2014	Various

Kai-Li Jiang	476	China	2006-2019	Carbon nanotubes and their applications

Akira Nakazawa	458	Australia	1980-2018	Printing, Mechanical

Eberhard Ammermann	451	Germany	1979-2015	Fungicides

Thomas E. Murray	449	USA	1860(b)-1929(d)	Electrical, HVAC, Wheels, Metal working, Light dimmer

Lisa Seacat DeLuca	449	USA	2009-2019	Various

Ruilong Xie	446	USA	2013-2019	Semiconductor device, CMOS, Semiconductor device fabrication

Hongyong Zhang	440	Japan	1993-2016	Thin film transistors, Liquid crystal displays

John L. Melanson	436	USA	1978-2019	Integrated circuits, semiconductors, mixed-signal products, signal processing, audio and voice components, hearing aids, LED lighting, and motor control

Scott H. Wittkopp	432	USA	2001-2017	Motor vehicle transmission

Brian M. O'Connell	426	USA	2009-2019	Various

Frederick A. Ware	423	USA	1981-2019	Chip design

John Hays Hammond, Jr.	417	USA	1888(b)-1965(d)	Radio control, Radio communications, Torpedoes

Hossein Eslambolchi	414	USA	1993-2018	Telecommunications, Network intelligence, information Technology, communications technology

Vincent J. Zimmer	412	USA	1999-2019	Computer software and firmware

Wilhelm Brandes	411	Germany	1976-2010	Fungicides

Cary L. Bates	411	USA	1994-2019	Programming tools, DBX, Memory debuggers

Xuemin (Sherman) Chen	410	USA	1997-2018	Computer networks, Integrated Circuits, Signal Processing

Stanford R. Ovshinsky	400	USA	1922(b)-2012(d)	Batteries, Solar cells, Liquid crystal displays, Hydrogen fuel cells, Computer data storage

Brent A. Anderson	395	USA	2001-2019	Semiconductor device fabrication, Semiconductor memory, Semiconductor device

Josef Theurer	388	Austria	1976-2016	Railroad maintenance machines

David V. Horak	387	USA	1992-2018	Various

Paul W. Dent	382	USA	1984-2019	Wireless communications

Sarbajit K. Rakshit	380	India	2013-2019	Various

George P. Liang	379	China	1983-2018	Gas turbine cooling

Wael W. Diab	378	USA	2003-2018	Computer networks

Hans-Joachim Santel	377	Germany	1986-2013	Herbicides, Pesticides, Organic chemistry

Gisela Lorenz	374	Germany	1990-2015	Fungicides, Organic chemistry

Garry R. Jackson	367	Australia	2001-2016	Printing, Mechanical

Pouya Hashemi	362	USA	2013-2019	Semiconductor, VLSI, CMOS logic and memory, cognitive

George Westinghouse	361	USA	1846(b)-1914(d)	Electric power, Electricity meter, Railway air brake, Steam engines

Jeffrey E. Stahmann	357	USA	1994-2019	Medical devices

William Daniel Hillis	357	USA	1986-2019	Various

Norman M. Berry	355	Australia	2006-2018	Printing, Mechanical

Mark W. Kroll	354	USA	1987-2019	Implantable medical devices

Robert R. Schmidt	350	Germany	1971-2005	Herbicides, Fungicides, Organic chemistry

Lawrence A. Clevenger	346	USA	1996-2019	Semiconductor, Cognitive, Memory, Security, Analytics

Carl J. Radens	342	USA	1994-2019	Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication

Bengt Lindoff	336	Sweden	2000-2019	Wireless communications

Ajith K. Kumar	333	India	1984-2019	Electric Power, Energy Management, Rail Transportation, Mining

Esmael H. Dinan	327	USA	2006-2019	Communication networks

Keith R. Walker	326	Saudi Arabia	2003-2019	Various

Elizabeth A. Sweeney	326	USA	2010-2019	Various

Hanson S. Gifford III	325	USA	1986-2019	Medical devices

Dean L. Kamen	325	USA	1979-2019	Battery-powered electric vehicles, Medical devices, Stirling engines, Water purification, Wheelchairs

Daniel J. Winarski	315	USA	1982-2019	Various

Liang Liu	315	China	2005-2019	Carbon nanotubes and their applications

Timothy J. Slegel	315	USA	1993-2019	Computer architecture

Steven L. Teig	314	USA	1995-2018	Integrated Circuits

Philip D. Nguyen	311	USA	1992-2019	Oilfield

Frank J. Viola	310	USA	1981-2019	Surgical instruments, Medical devices

Victor S. Moore	310	USA	1982-2019	Various

Kulvir S. Bhogal	309	USA	2003-2019	Various

Victoria Smith	308	USA	2006-2017	Proteins, Antibodies

Robert G. LeTourneau	299	USA	1888(b)-1969(d)	Earthworks (engineering), Heavy Equipment, Industrial Machinery

Michael (S.) Tsirkin	299	Israel	2012-2019	Virtual Machines, I/O Data Processing, Computer Graphics, Power Management, Computer Memory, Computer Networks, Distributed Data Processing, Fault Recovery, Data Structures

William R. Tonti	291	USA	1994-2016	Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication

Zine-Eddine Boutaghou	290	Algeria	1994-2018	Hard disk drive

Assaf Natanzon	290	Israel	2007-2019	Storage Systems, Data Protection

Adam Heller	284	Romania	1968-2019	Solar cells, Glucose meters, Lasers

Jeffrey W. Sleight	283	USA	1998-2019	Integrated Circuits, CMOS, Semiconductor device fabrication

Brent Keeth	279	USA	1994-2019	Integrated Circuits, CMOS, DRAM

Madhusudan K. Iyengar	277	India	2005-2019	Chip Cooling

Cyprian E. Uzoh	273	Nigeria	1998-2019	Semiconductor processing

Daniel C. Edelstein	273	USA	1991-2019	Semiconductor manufacturing

Michael A. Rothman	272	USA	2001-2019	Computer software and firmware

Hartley Owen	267	USA	1976-2010	Fluid catalytic cracking

Bran Ferren	259	USA	1986-2019	Computers, Consumer Electronics, Electro-Optical Systems, Medical, User Interfaces, Automotive, Vehicles & Transportation

Yoshihiro Kikuchi	257	Japan	1994-2018	Video processing

Christopher J. Dawson	256	USA	2006-2019	Various

Takeshi Chujoh	256	Japan	1995-2019	Video processing

Rajiv V. Joshi	255	USA	1986-2019	Electronics, analytics

Harry (Tom) Graef	254	USA	1976-2019	Business machines, automation

Craig E. Hampel	250	USA	1996-2019	Integrated Circuits

Dorin Comaniciu	248	USA	2003-2019	Machine Intelligence, Medical Imaging, Image-Guided Surgery, Computer Vision

Nobuyuki Taniguchi	245	Japan	1979-2015	Cameras

Sandeep R. Patil	244	India	2008-2019	Various

Johnny M. Shieh	242	USA	1996-2018	Various

Andrew J. Ouderkirk	242	USA	1989-2019	LEDs, Optic Films

Philip S. Yu	240	USA	1982-2018	Various

James E. Bostick	238	USA	1993-2019	Various

Imad Libbus	237	USA	2007-2019	Medical devices

Louis B. Rosenberg	232	USA	1995-2019	Augmented Reality, Virtual Reality, HCI

Gerald F. McBrearty	231	USA	1997-2018	Various

Zvi Or-Bach	230	USA	1982-2019	Various

Thomas J. Kennedy III	228	USA	1992-2018	Sporting Goods, Wind Turbines, Biotechnology

Mark A. Horowitz	226	USA	1993-2019	Integrated Circuits

Michael L. Fripp	226	USA	2004-2019	Oilfield

James R. Kraemer	224	USA	2008-2019	Various

Dureseti Chidambarrao	221	USA	1995-2017	Integrated Circuits, CMOS, Semiconductor device fabrication

Paul Ian Mackey	220	Australia	2008-2016	Printing, Mechanical

James W. Seaman	220	USA	2005-2019	Various

Seung H. Kang	216	USA	2002-2019	Semiconductor device technologies, MRAM, spintronics, and memory circuit design

Jonathan J. Hull	215	USA	1987-2019	Various

Stephen G. Perlman	213	USA	1989-2019	Wireless communications, Cloud gaming, Video compression

Mukta Ghate Farooq	213	India	1993-2019	Semiconductor materials and structures, packaging technology, and 3-dimensional silicon integration

Sebastian T. Ventrone	210	USA	1989-2019	Semiconductor, Logic, Architecture

Gregory McAvoy	208	Ireland	2003-2017	Printing, MEMS

Hiroshi (You) Yoshioka	205	Japan	1997-2015	Cameras

Patrick B. Usoro	205	USA	1999-2016	Motor vehicle transmission, Hybrid Powertrains, Vehicle Thermal Management

Rajarshi Gupta	205	India	2004-2019	Wireless networking, Machine Learning, Cybersecurity

Sadeg M. Faris	202	Libya	1979-2018	Various

With reference to the table that covers 'List of prolific inventors' (see 'Worldwide utility patents'), produce a single-sentence summary focused on the highlighted cells and return it as JSON: {"answer": "YOUR ANSWER"}.