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BELL & HOWELL JAPAN

Overview
  • Total Patents
    106
About

BELL & HOWELL JAPAN has a total of 106 patent applications. Its first patent ever was published in 1972. It filed its patents most often in Japan, United States and United Kingdom. Its main competitors in its focus markets optics, audio-visual technology and electrical machinery and energy are OPTIGON RESEARCH AND DEV CORP, RINGPRISM PTY LTD and HANS PANDER.

Patent filings in countries

World map showing BELL & HOWELL JAPANs patent filings in countries
# Country Total Patents
#1 Japan 35
#2 United States 31
#3 United Kingdom 21
#4 Germany 12
#5 Austria 4
#6 France 2
#7 Canada 1

Patent filings per year

Chart showing BELL & HOWELL JAPANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Isono Tadao 19
#2 Abe Masao 7
#3 Suwa Michiyoshi 7
#4 Katahira Yukio 6
#5 Mizuki Yoshiaki 5
#6 Oosawa Noriaki 5
#7 Saito Fumio 5
#8 Saito Seiichi 3
#9 Ishibashi Takao 3
#10 Osawa Noriaki 3

Latest patents

Publication Filing date Title
US4531819A Device for storing exposed film for photographing and developing apparatus
ATA376679A Camera
US4233503A Automatic focus adjusting system
US4159868A Film loop forming device
GB1595838A Automatic focusing apparatus
JPS54155834A Large aperture ratio zoom lens
JPS54151825A Module system camera
JPS54126026A Automatic focus control device for cine camera
JPS54108630A Method and apparatus for controlling film loop of cinecamera
JPS54105919A Photoelectric image detecting cartridge
JPS54105546A Moving picture camera
JPS5485321A Motor control indicator
GB1596925A Control circuit for a movie camera
US4142785A Exposure control circuit for camera
JPS5477174A Method of measuring pulse width by using microcomputer
DE2753436A1 Automatic focussing system for camera - uses mirror rangefinder with photoelectric cell in compensating network including monostable multivibrator
JPS5420726A Automatic focus adjusting device
JPS5414733A Automatic focus adjusting device
US4143952A Aperture assembly
JPS53149027A Automatic focal point adjusting device