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PHOTOMETRICS LTD

Overview
  • Total Patents
    18
About

PHOTOMETRICS LTD has a total of 18 patent applications. Its first patent ever was published in 1990. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Australia. Its main competitors in its focus markets audio-visual technology, measurement and computer technology are NIKON KORPOREJSHN, NANOLUX CO LTD and OLSEN RICHARD IAN.

Patent filings in countries

World map showing PHOTOMETRICS LTDs patent filings in countries

Patent filings per year

Chart showing PHOTOMETRICS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Marcus Stephen L 5
#2 Prettyjohns Keith N 4
#3 Jeng Peide 3
#4 Schempp William V 3
#5 Sagan Stephen F 3
#6 Dalton David C 2
#7 Cover Roger W 2
#8 Pfanhauser Wilhelm 1
#9 Vaughnn David 1
#10 Andelfinger Richard 1

Latest patents

Publication Filing date Title
US6388710B1 Solid state camera with separate vacuum and sieve chambers
US5818571A Apparatus with off-axis light path for characterizing the luminous intensity of lamp
US5760974A Lens system for maximizing light collection efficiency and transmission
US5774214A Multi-mode imaging apparatus for radiation-emitting or absorbing samples
US5729336A Apparatus and method for characterizing the luminous intensity of a lamp using a curved mirror and curved screen
US5594520A Low supply voltage shutter driver
US5515329A Variable-size first in first out memory with data manipulation capabilities
US5493332A Modular electronic imaging system which accepts replacement solid state images
US5338948A Charge-coupled device with open gate structure
US5386230A Charged-coupled device camera with voltage adjustment control
US5371470A Transverse filter circuit
US5252850A Apparatus for contouring a semiconductor, light responsive array with a prescribed physical profile
US5134275A Solid state exposuremeter
US5134680A Solid state imaging apparatus with fiber optic bundle
US5142557A CCD and phosphor screen digital radiology apparatus and method for high resolution mammography