David D. Friese

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Orinda, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Piping manifold for pulsating flow
- Patent number 10,843,950
- Issue date Nov 24, 2020
- APTwater, LLC
- David D. Friese
- G05 - CONTROLLING REGULATING
Information Patent Grant
Modules for use in and operation of a membrane biofilm reactor with...
- Patent number 9,902,634
- Issue date Feb 27, 2018
- McWong Environmental Technology
- David D. Friese
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Removal of selenium in contaminated wastewater streams
- Patent number 8,323,497
- Issue date Dec 4, 2012
- Aptwater Inc.
- Charles Borg
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Removal of selenium in contaminated wastewater streams
- Patent number 7,815,801
- Issue date Oct 19, 2010
- APT Water, Inc.
- Charles Borg
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Chemical process
- Patent number 6,143,899
- Issue date Nov 7, 2000
- Zeneca Limited
- Alexander Pai-Yung Fung
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PIPING MANIFOLD FOR PULSATING FLOW
- Publication number 20200031696
- Publication date Jan 30, 2020
- APTwater, LLC
- David D. Friese
- G05 - CONTROLLING REGULATING
Information Patent Application
DESIGN OF MODULES FOR USE IN AND OPERATION OF A MEMBRANE BIOFILM RE...
- Publication number 20130105391
- Publication date May 2, 2013
- APTwater, Inc.
- David D. Friese
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
REMOVAL OF SELENIUM IN CONTAMINATED WASTEWATER STREAMS
- Publication number 20090152194
- Publication date Jun 18, 2009
- Applied Process Technology, Inc.
- Charles Borg
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Water treatment bioreactor using hollow filaments
- Publication number 20090095675
- Publication date Apr 16, 2009
- Applied Process Technology
- Antonius J. Runneboom
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL