Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Internal combustion engine and its piston

Internal combustion engine and its piston

US Patent 5123386 · Granted Jun 23, 1992

Estimated economic value: $104,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Composite oil-ring1991
Steel having good wear resistance1991
Steel having good wear resistance1990
Aluminum alloy piston and piston-ring assembly treated to suppress agglutination1990
Oil pan arrangement for horizontally mounted engine1989
Three-piece oil-ring with a slot1989
Light metal alloy piston1988
Oil ring structure having reduced rigidity1988
Light metal alloy piston1987
Three-piece oil-ring with an inward protrusion1987
Oil-ring including two rail rings and an expander-spacer ring which bites into t1985
Flow control device of a helically-shaped intake port1984