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PRESBY DAVID W

Overview
  • Total Patents
    16
About

PRESBY DAVID W has a total of 16 patent applications. Its first patent ever was published in 1996. It filed its patents most often in Canada, United States and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets environmental technology, chemical engineering and mechanical elements are EM & C KOREA CO LTD, SHIN MYEONG CONSTRUCTION ENG CO LTD and OCEANSAVER AS.

Patent filings in countries

World map showing PRESBY DAVID Ws patent filings in countries

Patent filings per year

Chart showing PRESBY DAVID Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Presby David W 15
#2 Presby David 1

Latest patents

Publication Filing date Title
US7288190B2 Method, apparatus and system for removal of contaminants from water
US7270532B2 Skimmer tab former
CA2415194A1 Method, apparatus and actuatable perforator for creating apertures in pipe and pipe produced thereby
CA2365453A1 An end cap for a corrugated conduit
CA2359255A1 Means for coupling conduit
CA2300535A1 Plastic sewage pipe
CA2286995A1 Multi-level leaching system
CA2187126A1 Apparatus and method for producing pipe and pipe produced thereby
CA2185087A1 Using multi-layer material in processing of septic effluent and waste water