Inventor

FRITZSCHE ALFRED K

5 patents

⚠️ This page may combine multiple inventors who share the name “FRITZSCHE ALFRED K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PERMEA INC

2 patents

US4880441ANov 14, 1989

Asymmetric gas separation membranes having graded density skins

PERMEA INC74 citations93

US4871494AOct 3, 1989

Process for forming asymmetric gas separation membranes having graded density skins

PERMEA INC34 citations91

MONSANTO CO

2 patents

US4369605AJan 25, 1983

Methods for preparing tube sheets for permeators having hollow fiber membranes

MONSANTO CO132 citations90

US4323454AApr 6, 1982

Tube sheets for permeators

MONSANTO CO38 citations87

PARKER HANNIFIN CORP

1 patent

US6260709B1Jul 17, 2001

Membrane filter element for chemical-mechanical polishing slurries

PARKER HANNIFIN CORP12 citations70