Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Carbon black pair with different particle size and improved rubber stock

Carbon black pair with different particle size and improved rubber stock

US Patent 5430087 · Granted Jul 4, 1995

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

High water and brine swell elastomeric compositions and method for making and us2020
Enhanced oilfield swellable elastomers and methods for making and using same2017
Swellable material using soy spent flakes2014
Fibrous seal for blowout preventer1998
Fibrous seal for blowout preventer1998
Free flow low energy pipe protector1996
Variable diameter pipe protector1995
Safety sub with asymmetrical wall elastomeric closure for retaining drilling flu1994
Safety sub for retaining drilling fluids1994
Carbon black system and improved rubber stock1994
Carbon black system and improved rubber stock1994
Ram type blowout preventer having improved ram front packings1993