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Top 20 Key Players companies in ExpressCard
by Highest Patent Value in the United States in 2021

The ExpressCard top 20 is Discovery PatSnap’ annual ranking of the top 20 Highest Patent Value ExpressCard 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.
ExpressCard, initially called NEWCARD, is an interface to connect peripheral devices to a computer, usually a laptop computer. The ExpressCard technical standard specifies the design of slots built into the computer and of expansion cards to insert in the slots. The cards contain electronic circuits and sometimes connectors for external devices. The ExpressCard standard replaces the PC Card (also known as PCMCIA) standards.
#
Company Name
Region
Tech Topics
Total
1
Honeywell International, Inc.
Aerospace,Electronics,Market research,
...[+2]
Avg patent value: 1.39 M
2
Western Digital Corp.
Computer hardware,Navigation system,Software,
...[+2]
Avg patent value: 920,000
3
Western Digital Technologies, Inc.
Computer hardware,Peripheral,Electronics,
...[+2]
Avg patent value: 920,000
4
Intel Corp.
Semiconductor,Software,Computer hardware,
...[+2]
Avg patent value: 449,500
5
SanDisk Technologies LLC
Avg patent value: 346,666
6
Microsoft Technology Licensing LLC
Franchise agreement
Avg patent value: 170,000
7
Xerox Holdings Corp.
Computer hardware,Software,Digital document,
...[+2]
Avg patent value: 120,000
8
Xerox Corp.
Computer hardware,Electronics,Product group,
...[+2]
Avg patent value: 120,000
9
Synopsys, Inc.
Software,Information technology consulting,Electronic design automation,
...[+2]
Avg patent value: 100,000
10
Twitter, Inc.
Short Message Service,Social media,Communications system,
...[+2]
Avg patent value: 87,000
11
Dynamic Network Services, Inc.
Cloud computing,Application firewall,Software as a service,
...[+2]
Avg patent value: 78,000
12
Oracle America, Inc.
Cytidine monophosphate,Information technology consulting,Systems design
Avg patent value: 78,000
13
Apple, Inc.
Software,Computer hardware,Peripheral,
...[+2]
Avg patent value: 72,000
14
Microsoft Corp.
Software,Operating system,Cloud computing,
...[+2]
Avg patent value: 0
15
QUALCOMM, Inc.
Telecommunications,Wireless,Mobile device,
...[+2]
Avg patent value: 0
16
Socket Mobile, Inc.
Mobile device,Data collection,Computer hardware,
...[+2]
Avg patent value: 0
17
Dell USA LP
Avg patent value: 0
18
Mission Technology Group, Inc.
Magma,PCI Express
Avg patent value: 0
19
Xitron, Inc.
Software,Screen printing,Software design,
...[+2]
Avg patent value: 0
20
Round Rock Research LLC
Transistor,Semiconductor device fabrication,Semiconductor
Avg patent value: 0
Page generation time: Jul 22 2025