Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Compact magnetic fluid low pressure seal

Compact magnetic fluid low pressure seal

US Patent 4772032 · Granted Sep 20, 1988

Estimated economic value: $572,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Failure indicator seal for a rotary feedthrough2013
Ferrofluid seal incorporating multiple types of ferrofluid2005
Non-bursting ferrofluid seal2003
Ferrofluid sculpting apparatus2001
Method for recycling ferrofluid constituents used in a materials separation proc2001
System for recycling ferrofluid constituents used in a materials separation proc2000
Method for manufacturing oil-based ferrofluid2000
Quiet ferrofluid solenoid1999
Low cost method for manufacturing ferrofluid1999
Quiet ferrofluid solenoid with cushion1999
Sensor employing a sliding ferrofluid mass in a coated, non-wetting, housing1999
Stable polysiloxane ferrofluid compositions and method of making same1998