WILHELM ENV TECH INC

Overview

Total Patents

31

About

WILHELM ENV TECH INC has a total of 31 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, United Kingdom and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets chemical engineering, materials and metallurgy and environmental technology are ZONES STACEY IAN, PROIZV OB G I PRIKLADNOJ KHIM and ZAKLADY CHEMICZNE ALWERNIA SA.

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Patent filings in countries

World map showing WILHELM ENV TECH INCs patent filings in countries

#	Country	Total Patents
#1	United States	14
#2	United Kingdom	4
#3	WIPO (World Intellectual Property Organization)	3
#4	Australia	2
#5	Canada	2
#6	China	2
#7	EPO (European Patent Office)	2
#8	South Africa	2

Patent filings per year

Chart showing WILHELM ENV TECH INCs patent filings per year from 1900 to 2020

Similar Companies

ZONES STACEY IAN 91% similarity

PROIZV OB G I PRIKLADNOJ KHIM 90% similarity

ZAKLADY CHEMICZNE ALWERNIA SA 90% similarity

NANOTECH ENERGY INC 90% similarity

ARCANUM CORP 90% similarity

GAS2 LTD 89% similarity

OCI MATERIALS CO LTD 89% similarity

SABRE OXIDATION TECHNOLOGIES I 89% similarity

HUNAN ANCHUN HIGH TECH CO LTD 89% similarity

ROBINSON L F 89% similarity

Focus industries

#	Industry
#1	Chemical engineering
#2	Materials and metallurgy
#3	Environmental technology
#4	Machines

Focus technologies

#	Technology
#1	Magnetic or electrostatic solid separation
#2	Non-metallic elements
#3	Separation
#4	Chemical or physical processes
#5	Climate change mitigation in goods production
#6	Unspecified technologies

Top inventors

#	Name	Total Patents
#1	Lentz Michael J	14
#2	Battles Richard L	14
#3	Wright Robert A	12
#4	Wright Robert Allen	9
#5	Woracek David L	8
#6	Woracek David Luis	8
#7	Duncan Kent S	8
#8	Baters Richard L	1
#9	Dennis George R	1
#10	Denken Ken S Wolarthek David L	1

Latest patents

Publication	Filing date	Title
CN1223229A	1998-08-25	Sulfur dioxide generation using granulated or emulsion sulfur feedstock
US5665142A	1996-11-19	Flue gas conditioning system and method using native SO2 feedstock
US5681375A	1996-07-16	Boiler flue gas conditioning system using dilute sulfuric acid injection
US5449390A	1994-03-08	Flue gas conditioning system using vaporized sulfuric acid
CN1119429A	1994-03-04	Sulfur dioxide generation using granulated or emulsoid sulfur feedstock
US5370720A	1993-07-23	Flue gas conditioning system
GB9608089D0	1993-04-06	Flue gas conditioning system
EP0634955A1	1993-04-05	Flue gas conditioning system
US5350441A	1993-03-22	Flue gas conditioning system
US5356597A	1992-07-30	In-duct flue gas conditioning system
US5240470A	1992-07-01	In-duct flue gas conditioning system
US5288303A	1992-04-07	Flue gas conditioning system
CA2158131A1	1991-12-18	Sulfur Dioxide Generation Using Granulated or Emulsoid Sulfur Feedstock
US5032154A	1990-03-15	Flue gas conditioning system