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D AND D COMPANY INC

Overview
  • Total Patents
    19
About

D AND D COMPANY INC has a total of 19 patent applications. Its first patent ever was published in 1958. It filed its patents most often in Denmark, United Kingdom and United States. Its main competitors in its focus markets optics are EVERPRO TECHNOLOGIES COMPANY LTD, EDGE SCIENT INSTR CORP and CANZEK LUDVIK.

Patent filings in countries

World map showing D AND D COMPANY INCs patent filings in countries
# Country Total Patents
#1 Denmark 7
#2 United Kingdom 5
#3 United States 4
#4 France 3

Patent filings per year

Chart showing D AND D COMPANY INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Optical systems

Top inventors

# Name Total Patents
#1 Albert Goldhammer 4
#2 Del Riccio Lorenzo 4
#3 Dowling Robert W 3
#4 Whittle Dowling Robert 1

Latest patents

Publication Filing date Title
US3247763A Binocular having externally accessible filter guide
US3250176A Focusing mechanism for a binocular telescope
US3266367A Binocular focusing mechanism having indexing detent
GB884389A Improvements in lens arrangement for a binocular telescope
GB880826A Improvements in automatic lens casings focusing means for a binocular telescope
GB884213A Improvements in automatic lens covers for a binocular telescope
GB900555A Improvements in binocular telescope focusing means
GB849763A Improvements in binocular telescope