WARDEN WILLIAM F has a total of 17 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets chemical engineering, thermal processes and environmental technology are SICHUAN WANKANG ENERGY CONSERVATION AND ENVIRONMENTAL PROTECTION TECH CO LTD, CHINTEK INSTR & EQUIPMENT CO LTD and LIANG KEJIAN.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 11 | |
#2 | Canada | 5 | |
#3 | United Kingdom | 1 |
# | Industry | |
---|---|---|
#1 | Chemical engineering | |
#2 | Thermal processes | |
#3 | Environmental technology | |
#4 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Separation | |
#2 | Air-conditioning | |
#3 | Roof coverings | |
#4 | Water treatment |
# | Name | Total Patents |
---|---|---|
#1 | Warden William F | 17 |
Publication | Filing date | Title |
---|---|---|
CA162551A | Filter | |
US1140727A | Oil-filter. | |
US1108037A | Filter. | |
US1140726A | Filter. | |
CA138994A | Tank gauge | |
US925252A | Ventilator. | |
CA113140A | Ventilator | |
US925251A | Ventilator-clip. | |
US905255A | Ventilator. | |
US846074A | Ventilator. | |
US829817A | Ventilator. | |
US745939A | Exhaust-head. | |
CA80716A | Oil filter | |
US740957A | Oil-filter. | |
CA77263A | Oil filter | |
GB190113964A | Improvements in Oil Filters | |
US671098A | Oil-filtering apparatus. |