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Top 20 Key Players companies in Wankel engine
by Most Patent Citation in the United States in 2022

The Wankel engine top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Citation Wankel engine Key Players in the United States. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2022, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion. All parts rotate in one direction, as opposed to the common reciprocating piston engine, which has pistons instantly and rapidly changing direction 180 degrees. In contrast to the reciprocating piston designs, the Wankel engine delivers advantages of simplicity, smoothness, compactness, high revolutions per minute, and a high power-to-weight ratio.
#
Company Name
Region
Tech Topics
Total
1
Kodiak Partners Corp.
Industrial engineering,Manufacturing engineering,Mechanical engineering,
...[+1]
patent citation: 51
2
Ford Motor Co.
Truck,Public transport,Automotive engineering,
...[+2]
patent citation: 34
3
Pure Carbon Co.
patent citation: 27
4
EMCON Technologies LLC
Automation,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 23
5
Caterpillar, Inc.
Turbine,Construction engineering,Mechanical engineering,
...[+2]
patent citation: 12
6
United Technologies
Aerospace,Public transport,Building automation,
...[+2]
patent citation: 10
7
United-Tech, Inc.
Yeast,Telecommunications,Chemical treatment,
...[+2]
patent citation: 10
8
Park-Ohio Industries, Inc.
Forging,Irone,Logistics center,
...[+2]
patent citation: 9
9
Ingersoll-Rand Co.
Automation,Mechanical engineering,Manufacturing engineering,
...[+2]
patent citation: 7
10
Litton Industries, Inc.
Electronics,Radio wave,Vacuum tube
patent citation: 4
11
General Motors Co.
Sport utility vehicle,Public transport,Enterprise software,
...[+2]
patent citation: 2
12
Tenneco, Inc.
Powertrain,Automotive engineering,Catalytic converter,
...[+2]
patent citation: 2
13
Olin Corp.
Epoxy,Chemical engineering,Ammunition,
...[+2]
patent citation: 1
14
Honeywell International, Inc.
Aerospace,Electronics,Market research,
...[+2]
patent citation: 0
15
Briggs & Stratton Corp.
Robotic lawn mower,Gasoline,Turbine,
...[+2]
patent citation: 0
16
Tecumseh Products Co. LLC
Refrigeration,Scroll compressor,Air conditioning,
...[+2]
patent citation: 0
17
Microfabrica, Inc.
Hospital bed,Semiconductor,Companion diagnostic,
...[+2]
patent citation: 0
18
Marposs Corp.
Computer hardware,Electronics
patent citation: 0
19
Bullard Co.
Construction engineering
patent citation: 0
20
BSH Home Appliances Corp.
Washer,Electronics
patent citation: 0
Page generation time: Jul 19 2025