PRATT DAVID W has a total of 14 patent applications. Its first patent ever was published in 2000. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets measurement, civil engineering and mechanical elements are GENESIS UK LTD, GEOSERVICES EQUIPEMENTS SAS and DYBDAHL BJOERN.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 4 | |
#2 | Canada | 3 | |
#3 | EPO (European Patent Office) | 3 | |
#4 | WIPO (World Intellectual Property Organization) | 2 | |
#5 | Germany | 1 | |
#6 | United Kingdom | 1 |
# | Industry | |
---|---|---|
#1 | Measurement | |
#2 | Civil engineering | |
#3 | Mechanical elements | |
#4 | Machines |
# | Technology | |
---|---|---|
#1 | Analysing materials | |
#2 | Earth drilling | |
#3 | Venting or aerating devices | |
#4 | Unspecified technologies |
# | Name | Total Patents |
---|---|---|
#1 | Pratt David W | 14 |
Publication | Filing date | Title |
---|---|---|
US6979033B2 | Dual function bailer | |
US6966587B1 | Self-emptying bailer | |
US7255380B1 | Bottom-emptying device for tapered bailer | |
US6989092B1 | Bailer having built-in filter | |
CA2405257A1 | Air tight bailer system | |
WO03078968A1 | Low flow bailer | |
CA2357100A1 | Anti-wobbling bailer with high speed insertion | |
CA2356448A1 | Bailer having leak-inhibiting cushioned seal | |
DE10124901A1 | Valve assembly for admitting liquid fluid into hollow interior of bailer, e.g. used for taking liquid sample in laboratory tests | |
EP1203140A1 | Anti-wobbling bailer with high speed insertion |