Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Piston ring having hard multi-layer coating

Piston ring having hard multi-layer coating

US Patent 8033550 · Granted Oct 11, 2011

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Coating comprising layered structures of diamond like nanocomposite layers and d2012
Engine valve1995
Engine valve1993