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HOFFMAN ENVIRONMENTAL SYSTEMS

Overview
  • Total Patents
    35
About

HOFFMAN ENVIRONMENTAL SYSTEMS has a total of 35 patent applications. Its first patent ever was published in 1994. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Canada. Its main competitors in its focus markets textiles and paper, chemical engineering and environmental technology are ENSO GUTZEIT OY, UPF CORP and LUO MENGKUI.

Patent filings per year

Chart showing HOFFMAN ENVIRONMENTAL SYSTEMSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hoffman Roger P 32
#2 Walraven Gerald O 3
#3 Hoffmann Roger P 2

Latest patents

Publication Filing date Title
WO9951810A1 Method and apparatus for countercurrent treatment of slurries
WO0043282A1 Laminated package and method of producing the same
US6207242B1 Laminated package with enhanced interior and exterior
US6071380A Method of papermaking having zero liquid discharge
US5643413A Multi-ply paper product and method of making the same
US5882746A Laminated package and method of producing the same
WO9606978A1 Method of papermaking having zero liquid discharge
US5599426A Method of washing pulp using a single endless support fabric
US5500084A Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone
US5417809A Water reuse system incorporating vacuum pump sealing water in a zero discharge process