Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Oil separation and return system for centrifugal refrigerant compressors

Oil separation and return system for centrifugal refrigerant compressors

US Patent 4213307 · Granted Jul 22, 1980

Estimated economic value: $2,479,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Facilitation of opening and closing of structures without use of hand2024
High capacity chiller compressor2015
High capacity chiller compressor2013
High capacity chiller compressor2012
Telescoping serial elastic band ligator1998
Reciprocating serial transparent elastic band ligator1997
Method and apparatus for surge detection and control in centrifugal gas compress1982
Method and apparatus for surge detection and control in centrifugal gas compress1981
Impeller and shaft assembly for high speed gas compressor1981
Refrigeration system with load balancing control for at least three centrifugal 1981