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ROLLEI AMERICA

Overview
  • Total Patents
    18
About

ROLLEI AMERICA has a total of 18 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States, Canada and Japan. Its main competitors in its focus markets optics and electrical machinery and energy are TOSHIBA SHIYASHIN YOUHIN KK, MORRIS PHOTO IND and TOSHIBA PHOTO PROD.

Patent filings in countries

World map showing ROLLEI AMERICAs patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 5
#3 Japan 2
#4 France 1
#5 United Kingdom 1

Patent filings per year

Chart showing ROLLEI AMERICAs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Electrical machinery and energy

Focus technologies

# Technology
#1 Cameras
#2 Special electric heating or lighting

Top inventors

# Name Total Patents
#1 Adams Jr James R 4
#2 Ogawa Francis T 4
#3 Quinn Peter T 3
#4 Furanshisu Tsutomu Ogawa 2
#5 Wilwerding Dennis J 2
#6 Adams James R Jr 2
#7 Blecher Stephen 1
#8 Dick John D 1

Latest patents

Publication Filing date Title
US4333718A Photographic flash control circuitry having selectively operable internal sensor
US4297011A Photoflash device
US4205907A Calculator for electronic flash
US4249110A Controlled energy cut-off for an electronic flash device
US4238150A Rotatable electronic flash device with automatic light sensor tracking
US4249109A Light digitizing circuit for an electronic flash device
US4082983A Capacitor charging system for electronic flash apparatus
CA1022226A Light sensing transmitter for a remote photographic flash device
US4085353A Remote sensor trigger circuit
US4085316A Photographic flash device