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SPENGLER CHARLES W

Overview
  • Total Patents
    18
About

SPENGLER CHARLES W has a total of 18 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, Canada and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets thermal processes, chemical engineering and agriculture are SUZHOU DANKE ELECTROMECHANICAL CO LTD, DRYKOR LTD and ANDERBERG ERLING LAURITZ.

Patent filings per year

Chart showing SPENGLER CHARLES Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Spengler Charles W 18

Latest patents

Publication Filing date Title
US2007089383A1 Method of minimizing cross contamination between clean air rooms in a common enclosure
WO03100324A2 A clean room with a blower including a hepa filter and ducts
US4900342A Blower-filter assembly
US4917046A Aerosol testing method and chamber for experimental animals
US4804392A Clean air facility
US4732592A Portable clean air facility
US4781146A Aerosol testing chamber for experimental animals
US4622771A Communication display device
US4528941A Free-standing environmental chambers supported by plenum