David M. Ludwig

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Solar distillation unit
- Patent number 6,797,124
- Issue date Sep 28, 2004
- David M. Ludwig
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Solar distillation unit
- Publication number 20030057084
- Publication date Mar 27, 2003
- David M. Ludwig
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Apparatus for distilling water using solar energy and method for us...
- Publication number 20020060147
- Publication date May 23, 2002
- David M. Ludwig
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL