Top 50 Key Players companies in Housekeeping by Most Patent Citation in the United States in 2021 – Discovery

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The Housekeeping top 50 is Discovery PatSnap’ annual ranking of the top 50 Most Patent Citation Housekeeping Key Players in the United States. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

1	Rovi Guides, Inc.	California, United States	Advertising,Digital media,Publishing	patent citation: 472
2	SanDisk Technologies LLC	Texas, United States		patent citation: 463
3	MannKind Corp.	California, United States	Medicine,Health care,Inhaler, ...[+2]	patent citation: 368
4	Microsoft Technology Licensing LLC	Washington, United States	Franchise agreement	patent citation: 359
5	International Business Machines Corp.	New York, United States	Software,Computer hardware,Enterprise software, ...[+2]	patent citation: 336
6	Apple, Inc.	California, United States	Software,Computer hardware,Peripheral, ...[+2]	patent citation: 302
7	Syniverse Technologies LLC	United States	Roaming,Revenue management,Telecommunications, ...[+2]	patent citation: 273
8	Intel Corp.	California, United States	Semiconductor,Software,Computer hardware, ...[+2]	patent citation: 231
9	Lucent Technologies, Inc.	New Jersey, United States	Software,Telecommunications,Private network, ...[+2]	patent citation: 209
10	McNeil Corp.	United States	Chemical engineering	patent citation: 161
11	Sun Microsystems, Inc.	California, United States	Software,Semiconductor,Microprocessor, ...[+2]	patent citation: 147
12	Enseo, Inc.	Texas, United States	Adventure tourism,Digital signage,Electronics, ...[+2]	patent citation: 129
13	Micron Technology, Inc.	Idaho, United States	Semiconductor,Computer hardware,Solid-state drive, ...[+2]	patent citation: 126
14	U.S. Philips Corp.	Pennsylvania, United States		patent citation: 118
15	Nokia, Inc.	Texas, United States	Mobile phone,Telecommunications	patent citation: 110
16	Roche Molecular Systems, Inc.	California, United States	Health care,Blood Screening,Polymerase chain reaction, ...[+2]	patent citation: 106
17	Unisys Corp.	Pennsylvania, United States	Software,Information technology consulting,Systems design, ...[+2]	patent citation: 101
18	AT&T, Inc.	Texas, United States	Wireless,Telecommunications,Mobile device, ...[+2]	patent citation: 98
19	AT&T IPM Corp.	United States		patent citation: 98
20	Telecom Wireless Solutions, Inc.	United States		patent citation: 91
21	Harris Intertype Corp.	United States	Automation,Mechanical engineering,Manufacturing engineering, ...[+1]	patent citation: 83
22	Dynamic Network Services, Inc.	New Hampshire, United States	Cloud computing,Application firewall,Software as a service, ...[+2]	patent citation: 79
23	Oracle America, Inc.	California, United States	Cytidine monophosphate,Information technology consulting,Systems design	patent citation: 79
24	Johnson & Johnson	New Jersey, United States	Health care,Medical equipment,Risperidone, ...[+2]	patent citation: 78
25	Mitronics, Inc.	United States		patent citation: 73
26	News America Publications, Inc.	Texas, United States		patent citation: 73
27	Tele-Communications of Colorado, Inc.	Colorado, United States		patent citation: 73
28	Google LLC	California, United States	Advertising,Enterprise software,Search engine, ...[+2]	patent citation: 68
29	NCR Corp.	Georgia, United States	Software,Peripheral,Self-service, ...[+2]	patent citation: 65
30	General Electric Co.	Massachusetts, United States	Energy management,Turbine,Electronics, ...[+2]	patent citation: 62
31	Powerware Corp.	North Carolina, United States	Electronics,Power quality	patent citation: 60
32	Xerox Holdings Corp.	Connecticut, United States	Computer hardware,Software,Digital document, ...[+2]	patent citation: 55
33	Xerox Corp.	Connecticut, United States	Computer hardware,Electronics,Product group, ...[+2]	patent citation: 55
34	PDL BioPharma, Inc.	Nevada, United States	Patent portfolio,Health care,Drug discovery, ...[+2]	patent citation: 50
35	Fluor Daniel Hanford, Inc.	Washington, United States		patent citation: 49
36	Hewlett-Packard Development Co. LP	Texas, United States	Peripheral,Graphics processing unit,Information technology management, ...[+2]	patent citation: 48
37	NXP USA, Inc.	Texas, United States	Semiconductor,Resistor,Electron, ...[+2]	patent citation: 48
38	PayPal, Inc.	California, United States	Mobile payment,E-commerce,Software, ...[+2]	patent citation: 47
39	Mercury Systems, Inc.	Massachusetts, United States	Backplane,Product design,Electronics, ...[+2]	patent citation: 43
40	American Express Travel Related Services Co., Inc.	New York, United States	Tourist attraction,Adventure tourism,Business travel	patent citation: 43
41	Premise Development Corp.	United States		patent citation: 42
42	Caelum Research Corp.	United States	Program management,Robotics,Software, ...[+1]	patent citation: 40
43	CTB, Inc.	Indiana, United States	Automation,Food industry,Poultry product	patent citation: 39
44	Fujitsu Microelectronics America, Inc.	California, United States	Semiconductor,Microelectronics,Electronic component, ...[+2]	patent citation: 35
45	Sundisk Corp.	California, United States	Peripheral,Information technology management,Graphics processing unit	patent citation: 27
46	Chevron Corp.	California, United States	Lubricant,Petroleum,Petroleum industry, ...[+2]	patent citation: 25
47	Chevron U.S.A., Inc.	California, United States	Gasoline,Petroleum industry,Petroleum, ...[+2]	patent citation: 25
48	Celera Corp.	United States	Human variability,Hospitality industry,Health care, ...[+2]	patent citation: 21
49	TEC, Inc.	Virginia, United States	Environmental consulting,Contamination,Information technology, ...[+2]	patent citation: 15
50	fleeteyes LLC	New York, United States	Software,Health department,Software as a service, ...[+2]	patent citation: 11