1
William V Collentro, Andrew W Collentro: Production of high purity water using reverse osmosis. Zenon Environmental, Andrew Alexander, June 16, 1998: US05766479 (111 worldwide citation)

A process for purifying water by removing dissolved materials therefrom, the process capable of producing purified water having a resistivity in the range of 2 to 10 megohm-cm. The process comprises providing a water feed stream to be purified and adjusting the pH of the water feed stream to a basic ...


2
William V Collentro, Andrew W Collentro: Purification of gases from water using reverse osmosis. Zenon Environmental, Andrew Alexander, September 23, 1997: US05670053 (110 worldwide citation)

A process for purifying water including removing cations, anions and carbon dioxide and/or ammonia from water feed stream to produce high purity water having a resistivity of greater than 1 megohm-era comprising the steps of providing a water feed stream to be purified, the stream containing cations ...


3
Riad A Al Samadi, Andrew Benedek: Microfiltration enhanced reverse osmosis for water treatment. Zenon Environmental, Andrew Alexander, March 26, 1996: US05501798 (90 worldwide citation)

Disclosed is an improved method for extending the useful life of a reverse osmosis membrane having a high pressure side and a low pressure side, the membrane used for separating soluble and sparingly soluble inorganic materials from an aqueous solution, the process comprising introducing an aqueous ...


4
Raymond Joffre Claxton, Joseph Raymond Herrick: Method and apparatus for circulating a molten media. Aluminum Company of America, Andrew Alexander, Carl R Lippert, October 5, 1976: US03984234 (84 worldwide citation)

A method and apparatus for moving molten media such as molten metal or molten salt through a metal treating system utilizing a vaned disc immersed in the media and located in a cylindrical portion of an open-ended volute so as to provide above the disc a body of the media having an unconfined surfac ...


5
Hidayat Husain, Henry Behmann, Fernando A Tonelli, Ming Gang Liu: Shipboard wastewater treatment system. Zenon Environmental, Andrew Alexander, March 26, 2002: US06361695 (84 worldwide citation)

A method and system for treating wastewater in an onboard ship sewage treatment system having controlled suspended solids, the method comprising the steps of collecting wastewater in a collection tank and transferring the wastewater to a bioreactor to oxidize organic material contained in the wastew ...


6
Jan H L van Linden, Joseph R Herrick, Michael J Kinosz: Metal scrap melting system. Aluminum Company of America, Andrew Alexander, December 14, 1976: US03997336 (83 worldwide citation)

A system for melting metal scrap in a molten melting media comprises a housing having an upper portion wherein the melting media and scrap are brought together to initiate melting. The housing also has a lower portion in which a volute is located. An impeller, having a central hub, a circumferential ...


7
Jan H L van Linden, Raymond J Claxton, Joseph R Herrick, Robert J Ormesher: Aluminum scrap reclamation. Aluminum Company of America, Andrew Alexander, December 5, 1978: US04128415 (83 worldwide citation)

An improved system for melting metal scrap in a molten melting media includes a housing generally cylindrical in cross section and having upper and lower portions. Metal scrap is introduced to a body of molten melting media contained in the upper portion of the housing. A supply of molten melting me ...


8

9
Darren P Lawrence, Theo A A Hellenkamp: Apparatus and method for membrane filtration with enhanced net flux. Zenon Environmental, Andrew Alexander, September 28, 1999: US05958243 (77 worldwide citation)

A membrane filtration system which uses pump speed controllers to control flow rate and pressure during both the filtration cycle and the backwash cycle. The pump speed controllers operate by changing the frequency of AC current delivered to the pump motors, which changes the flow rate by changing t ...


10
Christian Gungerich, Pierre Lucien Côté, Robert Langerak, Denis Guibert, Hamid Rabie: Aerated immersed membrane system. Zenon Environmental, Andrew Alexander, December 2, 2003: US06656356 (76 worldwide citation)

An element of immersed, suction driven, filtering membranes has a plurality of hollow fiber membranes suspended between upper and lower headers. The lower header is movable between a first position in which the fibers are substantially elongated and second position in which the two headers are close ...



Click the thumbnails below to visualize the patent trend.