Learn more

HAMILTON WATCH CO

Overview
  • Total Patents
    496
About

HAMILTON WATCH CO has a total of 496 patent applications. Its first patent ever was published in 1904. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets measurement, machines and basic communication technologies are WESTERN CLOCK CO, BULOVA WATCH CO INC and TIMEX CORP.

Patent filings in countries

World map showing HAMILTON WATCH COs patent filings in countries
# Country Total Patents
#1 United States 321
#2 Canada 40
#3 Germany 38
#4 United Kingdom 35
#5 Switzerland 33
#6 France 29

Patent filings per year

Chart showing HAMILTON WATCH COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Reese James H 24
#2 Horn John A Van 23
#3 Biemiller Philip E 22
#4 Walton Richard S 21
#5 Bennett Jr William Ogle 20
#6 Bergey John M 12
#7 Fred Koehler 12
#8 Detwiler Harry S 10
#9 Daniel Fritsch 8
#10 Haaften Egbert Van 8

Latest patents

Publication Filing date Title
US3721084A Solid state watch incorporating large-scale integrated circuits
US3760584A Integrated circuit solid state watch
US3714867A Solid state watch incorporating largescale integrated circuits
US3701249A Solid state timepiece with liquid crystal display
US3707071A Solid state timepiece
US3664118A Electronically controlled timepiece using low power mos transistor circuitry
US3676993A Electronic watch
US3651340A Current limiting complementary symmetry mos inverters
US3641761A Watch transducer
US3657571A Solid state timer
US3672155A Solid state watch
US3609954A Rapid set mechanism for calendar timepieces
US3590575A Oilless shockproof bearing for timepieces
US3657568A Pulse shaping circuit using complementary mos devices
US3600760A Release mechanism
US3621313A Electronic timepiece construction employing a flat step-by-step electromechanical energy converter
CA920847A Ultrasonic displacement drilling of pivot holes in a plastic plate
US3618522A Dual safety grenade fuze
US3620165A Self-compensating barometric fuze
US3596116A Piezoelectric-fluid electromechanical transducer