4. Stock material or miscellaneous articles
  5. Web or sheet containing structurally defined element or...
  6. Composite having voids in a component

Robert F. Zepf

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Highly assymetric, hydrophilic, microfiltration membranes having

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent

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Highly asymmetric, hydrophilic, microfiltration membranes...

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate

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Highly asymmetric, hydrophilic, microfiltration membranes...

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate

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Highly asymmetric, hydrophilic, microfiltration membranes...

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Reexamination Certificate

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Ultraporous and microporous integral membranes

Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent

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Profile ID: LFUS-PAI-P-581924

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