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CROWN OPTICAL CO

Overview
  • Total Patents
    13
About

CROWN OPTICAL CO has a total of 13 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States. Its main competitors in its focus markets optics are MAURICH EUGEN, SANO KIKO KK and CYCLOPTIC ANSTALT FUR OPTIK UN.

Patent filings in countries

World map showing CROWN OPTICAL COs patent filings in countries
# Country Total Patents
#1 United States 13

Patent filings per year

Chart showing CROWN OPTICAL COs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Optical systems
#2 Cameras

Top inventors

# Name Total Patents
#1 Stout Charles H 3
#2 Mihalyi Joseph 3
#3 Fisk Joshua T 2
#4 Mihalyi Frank 2
#5 Schleinzer John 1
#6 Zwillinger Max 1
#7 Reisinger George 1

Latest patents

Publication Filing date Title
US1290279A Binocular.
US1285775A Optical instrument.
US1267596A Optical instrument.
US1261643A View-finder for cameras.
US1267592A Optical instrument.
US1254741A Optical instrument.
US1267572A Optical instrument.
US1236895A Lens.
US1229117A Optical instrument.
US1249163A Optical instrument.
US1226026A Optical instrument.
US973021A Photographic shutter.
US973020A Photographic shutter.