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BOART LONGYEAR INT HOLDING INC

Overview
  • Total Patents
    56
About

BOART LONGYEAR INT HOLDING INC has a total of 56 patent applications. Its first patent ever was published in 1996. It filed its patents most often in United States, South Africa and Australia. Its main competitors in its focus markets civil engineering, machines and mechanical elements are WEBB CHARLES T, PAGE OIL TOOLS INC and TRI STATE OIL TOOLS INC.

Patent filings per year

Chart showing BOART LONGYEAR INT HOLDING INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Marshall John C 14
#2 Able Robert E 13
#3 Drenth Christopher L 6
#4 Stephens John Thomas 5
#5 Attwater Michael O 5
#6 Novacovicci Radoie 5
#7 Morin Daniel H 5
#8 Langan Patrick Joseph 4
#9 Silay Louis E 3
#10 Mckinley Raymond B 3

Latest patents

Publication Filing date Title
KR20090007420A Drill rod handler
BR0201084A Drilling Rig and Operation
US6719303B2 Drill string chuck
US6564885B2 Up-hole overshot and safety drilling apparatus
US6425449B1 Up-hole pump-in core barrel apparatus
US6371205B1 Bore hole grouting apparatus and method
ZA9900767B Closed loop control system for diamond core drilling.
US6089335A Positive latch core barrel apparatus
US6109373A Cable overshot apparatus
US6029758A Retractable core barrel valving apparatus
US5934393A Core barrel apparatus
US5788401A Rod joint