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PWT PROJECTS LTD

Overview
  • Total Patents
    18
About

PWT PROJECTS LTD has a total of 18 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United Kingdom, Japan and Australia. Its main competitors in its focus markets chemical engineering, machines and environmental technology are ZANDER AUFBEREITUNGSTECHNIK, LEOPOLD CO INC F B and FRAM IND FILTER CORP.

Patent filings in countries

World map showing PWT PROJECTS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 11
#2 Japan 3
#3 Australia 1
#4 EPO (European Patent Office) 1
#5 New Zealand 1
#6 United States 1

Patent filings per year

Chart showing PWT PROJECTS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stevenson David Gordon 4
#2 Debitsudo Goodon Suchiibunson 3
#3 Brignal William Johnson 2
#4 Weston Philip Antony 2
#5 Ian Arekusandaa Kurosurii 1
#6 Crossley Ian Alexander 1
#7 Cheetham John Harold 1
#8 Weston Philip A 1
#9 Stevenson David George 1

Latest patents

Publication Filing date Title
JPH07222903A Granular medium filter
GB9315075D0 Nozzle
GB9315076D0 Granular bed filter
GB9217097D0 Transfer of granular materials from filters
GB9214414D0 Discharge outlet for granular media filters
GB9204935D0 Filter with inclined floor
GB9024198D0 Multiport valve
GB9023302D0 Discharge of granular media from treatment vessels
GB9012502D0 Granular media biological filter
GB9008619D0 Underdrain system for use in a granular media filter
GB8920689D0 Continuous solids/liquid separator