Jeffrey J. Sietsema

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Jenison, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Seal-less piston pump for liquefied gas
- Patent number 9,551,328
- Issue date Jan 24, 2017
- Delaware Capital Formation, Inc.
- Michael E Frey
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulic drive and control system for pumps using a charge pump
- Patent number 8,341,955
- Issue date Jan 1, 2013
- Daniel R. Brantley
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
SEAL-LESS PISTON PUMP FOR LIQUEFIED GAS
- Publication number 20140271262
- Publication date Sep 18, 2014
- Michael E. Frey
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Hydraulic drive and control system for pumps
- Publication number 20100329892
- Publication date Dec 30, 2010
- Daniel R. Brantley
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...