Learn more

ROTARY OIL TOOL COMPANY

Overview
  • Total Patents
    23
About

ROTARY OIL TOOL COMPANY has a total of 23 patent applications. Its first patent ever was published in 1951. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering and machines are DrawWorks LP, RALPH SPEAROW and PETROQUIP ENERGY SERVICES LLP.

Patent filings in countries

World map showing ROTARY OIL TOOL COMPANYs patent filings in countries
# Country Total Patents
#1 United States 16
#2 Canada 5
#3 United Kingdom 2

Patent filings per year

Chart showing ROTARY OIL TOOL COMPANYs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Kammerer Jr Archer W 12
#2 Kammerer Archer W Jr 5
#3 Kammerer Archer W 4
#4 Johnson Gary R 1
#5 Lamphere David E 1

Latest patents

Publication Filing date Title
US2976927A Rotary drill bits and cutters
US2941785A Expansible rotary drill bit
US2922627A Rotary drill bits and cutters
US2822149A Rotary expansible drill bits
US2758819A Hydraulically expansible drill bits
US2814463A Expansible drill bit with indicator
US2755071A Apparatus for enlarging well bores
US2755070A Hydraulically expansible rotary drill bits
US2719701A Rotary expansible drill bits
US2754089A Rotary expansible drill bits
US2754090A Stage expansible rotary drill bits
US2754088A Rotary expansible drill bits
US2710172A Expansible drill bits for enlarging well bores
US2758820A Expansible rotary drill bits
US2799477A Expansible drill bits
US2719700A Apparatus for enlarging well bores
CA857584A Method of and apparatus for installing reinforcing members in boreholes
CA900951A Expansible rotary drill bit with hydraulic lock
CA890739A Method and apparatus for cementing casing sections in well bores
CA833328A Apparatus for recovering formation wall samples from a bore hole