1
Mailvaganam Mahendran, Carlos Fernando F Rodrigues, Steven Kristian Pedersen: Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate. Zenon Environmental, Alfred D Lobo, June 17, 1997: US05639373 (155 worldwide citation)

A vertical skein of "fibers", opposed terminal portions of which are held in headers unconfined in a modular shell, is aerated with a gas-distribution means which produces a mass of bubbles serving the function of a scrub-brash for the outer surfaces of the fibers. The membrane device is surprisingl ...


2
Wayne Jerald Henshaw, Mailvaganam Mahendran, Henry Behmann: Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces. Zenon Environmental, Alfred D Lobo, July 21, 1998: US05783083 (138 worldwide citation)

A gas-scrubbed vertical cylindrical skein of "fibers" has their opposed terminal portions held in headers unconfined in a modular shell, and aerated with a cleansing gas supplied by a gas-distribution means which produces a mass of bubbles serving the function of a scrub-brush for the outer surfaces ...


3
Mailvaganam Mahendran, Ake Adolf Deutschmann, Wayne Jerald Henshaw, Henry Behmann: Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers. Zenon Environmental, Alfred D Lobo, June 8, 1999: US05910250 (108 worldwide citation)

A filtration device is provided for withdrawing permeate essentially continuously from a multicomponent aqueous substrate containing growing microorganisms in a reservoir. A vertical skein of fiber is scrubbed with coarse bubbles which emanate from a conversion baffle positioned under the skein. The ...


4
Mailvaganam Mahendran, Kenneth Paul Goodboy, Luigi Fabbricino: Hollow fiber membrane and braided tubular support therefor. Zenon Environmental, Alfred D Lobo, March 12, 2002: US06354444 (108 worldwide citation)

An asymmetric membrane comprising a tubular polymer film in combination with a tubular braid on which the film is supported, requires the braid be macroporous and flexible, yet sufficiently strong to withstand continuous flexing, stretching and abrasion during use for microfiltration (MF) or ultrafi ...


5
Mailvaganam Mahendran, Ake Adolf Deutschmann, Wayne Jerald Henshaw, Henry Behmann: Potted header for hollow fiber membranes and method for making it. Zenon Environmental, Alfred D Lobo, March 28, 2000: US06042677 (95 worldwide citation)

A filtration device is provided for withdrawing permeate essentially continuously from a multicomponent aqueous substrate containing growing microorganisms in a reservoir. A vertical skein of fiber is scrubbed with coarse bubbles which emanate from a conversion baffle positioned under the skein. The ...


6
Mailvaganam Mahendran, Kenneth Paul Goodboy, Jinhua Bai: Filtration membrane with calcined .alpha.-alumina particles therein. Zenon Environmental, Alfred D Lobo, June 22, 1999: US05914039 (93 worldwide citation)

A filtration membrane for micro- or ultra-filtration is formed from a complex of PVDF and calcined .alpha.-alumina (".alpha.-Al") particles, in which complex the particles are reacted and dispersed. The suspended complex is then mixed with a hydrophilic polymer such as polyvinyl alcohol (40%-90% hyd ...


7
Mailvaganam Mahendran, Kenneth Paul Goodboy, Jinhua Bai: Method of making a dope comprising hydrophilized PVDF and .alpha.-alumina, and a membrane made therefrom. Zenon Evironmental, Alfred D Lobo, February 15, 2000: US06024872 (92 worldwide citation)

A filtration membrane for micro- or ultra-filtration is formed from a complex of PVDF and calcined .alpha.-alumina (".alpha.-Al") particles, in which complex the particles are reacted and dispersed. The suspended complex is then mixed with a hydrophilic polymer such as polyvinyl alcohol (40%-90% hyd ...


8
Henry Behmann, Mailvaganam Mahendran, Steven Khristian Pedersen, Wayne Jerald Henshaw: Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes. Zenon Enviromental, Bereskin & Parr, September 16, 2003: US06620319 (81 worldwide citation)

An apparatus for treating a multi component liquid substrate while leaving particulate matter therein as a skein of hollow fiber filtering membranes immersed in the substrate which is contained in a non-pressurized reservoir. A pumping fluid communication with the lumens of the membranes draws a com ...


9
Mailvaganam Mahendran, Ake Adolf Deutschmann, Wayne Jerald Henshaw, Henry Behmann: Potted header for hollow fiber membranes. Zenon Environmental, Alfred D Lobo, September 25, 2001: US06294039 (80 worldwide citation)

A filtration device is provided for withdrawing permeate essentially continuously from a multicomponent aqueous substrate containing growing microorganisms in a reservoir. A vertical skein of fiber is scrubbed with coarse bubbles which emanate from a conversion baffle positioned under the skein. The ...


10
Mailvaganam Mahendran, Steven Pedersen: Method of potting hollow fiber membranes. Zenon Environmental, Bereskin & Parr, February 3, 2004: US06685832 (77 worldwide citation)

A method of potting a plurality of hollow fiber membranes into a mass of solidified potting liquid is described. Open ends of a plurality of hollow fiber membranes are enclosed in a first material held in a container which may be a part of a permeate collection means, for example, a permeate pan or ...



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