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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | Canada | 3 | |
#3 | WIPO (World Intellectual Property Organization) | 3 | |
#4 | Australia | 2 | |
#5 | EPO (European Patent Office) | 2 |
# | Industry | |
---|---|---|
#1 | Thermal processes | |
#2 | Chemical engineering | |
#3 | Agriculture | |
#4 | Medical technology | |
#5 | Audio-visual technology | |
#6 | Machines | |
#7 | Furniture and games |
# | Technology | |
---|---|---|
#1 | Air-conditioning | |
#2 | Chemical or physical laboratory devices | |
#3 | Animal care | |
#4 | Veterinary instruments or methods | |
#5 | Unspecified technologies | |
#6 | Toys | |
#7 | Advertising | |
#8 | Separation |
# | Name | Total Patents |
---|---|---|
#1 | Spengler Charles W | 18 |
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 |