found 2 in 341ms
patent
score
priority
expiry  
expired
references
current assignee
title
5030713441989-11-292009-11-2915Quantum Chemical Corp…;  QUANTUM CHEMICAL CORP…;  Process for fractionating polymers
4427547461982-01-252002-01-25114QUANTUM SYSTEMS CORPORATION, C O J P AMBROS…;  Backwashing-type filtering apparatus with filter support grid of ring-like segments