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SUROFF LEONARD W

Overview
  • Total Patents
    18
About

SUROFF LEONARD W has a total of 18 patent applications. Its first patent ever was published in 1977. It filed its patents most often in United States and EPO (European Patent Office). Its main competitors in its focus markets thermal processes, medical technology and control are MOTOYAMA HISASHI, ROBERT H HENLEY and SHIN FUJI KUCHO KK.

Patent filings in countries

World map showing SUROFF LEONARD Ws patent filings in countries
# Country Total Patents
#1 United States 17
#2 EPO (European Patent Office) 1

Patent filings per year

Chart showing SUROFF LEONARD Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kolt Stanley 15
#2 Suroff Leonard W 3

Latest patents

Publication Filing date Title
US5150492A Ultrasonic toothbrush
US5080005A Passive building vents
US4991249A Ultrasonic toothbrush
US4697736A Automatic damper assembly
US4596181A Passive building vents
US4586654A Energy saver damper assembly
US4591092A Energy saver damper assembly
US4582250A Automatic damper assembly
US4567816A Unidirectional vent
US4557183A Incrementally adjustable vent
US4466402A Automatic switch assembly
US4520959A Energy saver damper assembly
US4501389A Automatic damper assembly
US4507922A Thermostatic assembly
US4416415A Automatic damper assembly
US4402455A Automatic fluid control assembly
US4123001A Automatic ventilator