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HOWLETT MACHINE WORKS

Overview
  • Total Patents
    28
About

HOWLETT MACHINE WORKS has a total of 28 patent applications. Its first patent ever was published in 1963. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering, machines and mechanical elements are MURE ETS, BRANDESTINI A and MANUF ACEROS CAUCHO SA.

Patent filings in countries

World map showing HOWLETT MACHINE WORKSs patent filings in countries
# Country Total Patents
#1 United States 21
#2 Canada 3
#3 United Kingdom 2
#4 Germany 1
#5 France 1

Patent filings per year

Chart showing HOWLETT MACHINE WORKSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Howlett James W 19
#2 Howlett George H 13
#3 Annex Richmond 1
#4 W Howlett James 1

Latest patents

Publication Filing date Title
US4752159A Tapered thread forming apparatus and method
US4047388A Method for coupling axially aligned tunnel sections and apparatus therefor
US4146951A Method and apparatus for tensioning concrete reinforcing tendons
CA1062493A Anchor member and method of forming same
US3935685A Anchor member and method of forming same
US3921353A Tendon anchorage assembly and bore mounting apparatus therefor
US3650112A Method of shoring and apparatus therefor
US3673644A Tendon anchorage
US3605361A Tendon anchorage
US3520032A Tendon anchorage
US3522682A Multiple tendon anchorage
FR1537626A Method and apparatus for prestressing concrete
GB1196491A Concrete Prestressing apparatus and method
US3460300A Concrete prestressing apparatus (tank)
US3396943A Concrete prestressing apparatus
US3504938A Concrete prestressing apparatus (split nut)
US3518748A Concrete prestressing method
US3387417A Prestressing apparatus
US3415552A Splicing metallic reinforcing rods with a threaded coupling sleeve
US3454293A Turnbuckle