Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Direct-injection type spark-ignition internal combustion engine

Direct-injection type spark-ignition internal combustion engine

US Patent 5720253 · Granted Feb 24, 1998

Estimated economic value: $167,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Supported metal catalyst, method for producing same, and method for producing ca2025
Supported metal catalyst and electrochemical cell2025
Carrier metal catalyst, manufacturing method thereof, and fuel cell2024
Supported metal catalyst and method for producing same2023
Carrier powder, method for producing same, carrier metal catalyst, and method fo2023
Carrier metal catalyst, manufacturing method thereof, and fuel cell2022
Alloy electrode catalyst and fuel cell using the same2019
Fuel cell system and method for its operation2019
Fuel cell system and fuel cell operating method2009
Fuel cell system and related method2008
Fuel cell system2008
Fuel cell drive system2006