Assignee
STEFFENS RALF
US·3 granted patents·3 pending applications·32 citations·filing 2000–2018
Top patents by PatentIndex Score
6 records- 0186US6497563B1Dry-compressing screw pump having cooling medium through hollow rotor spindlesSTEFFENS RALF·Filed 2000·Granted Dec 24, 2002·30 cites·23 claims
- 0275US8876506B2Displacement pump with internal compressionSTEFFENS RALF·Filed 2012·Granted Nov 4, 2014·2 cites·15 claims
- 0354US10337515B2Spindle compressor using refrigerant cooling for housing and rotorSTEFFENS RALF·Filed 2015·Granted Jul 2, 2019·0 cites·12 claims
- 0446US2020309129A1Displacement compressor system for r-718STEFFENS RALF·Filed 2018·Application pending·0 cites
- 0544US2015118093A1Spindle compressorSTEFFENS RALF·Filed 2013·Application pending·0 cites
- 0644US2020386228A1Steam compressor comprising a dry positive-displacement unit as a spindle compressorSTEFFENS RALF·Filed 2018·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →