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SHIELDS JOHN

Overview
  • Total Patents
    17
About

SHIELDS JOHN has a total of 17 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets measurement, machines and environmental technology are GREAT LAKES INSTRUMENTS INC, WILKS SCIENTIFIC CORP and SHIELDS INSTR LTD.

Patent filings in countries

World map showing SHIELDS JOHNs patent filings in countries
# Country Total Patents
#1 United States 7
#2 United Kingdom 5
#3 Canada 3
#4 Japan 2

Patent filings per year

Chart showing SHIELDS JOHNs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Shields John 15
#2 Jiyon Shiiruzu 2

Latest patents

Publication Filing date Title
US5241178A Infrared grain analyzer with controllable measurement wavelength
CA1278701C Quantitative measurement of fat in dairy products
CA1160864A Electro-optical analyzer for measuring percentage by weight of fat, protein and lactose in milk
US4415809A Electro-optical analyzer for measuring percentage by weight of fat, protein and lactose in milk
CA1147161A Electro-optical analyzer for measuring percentage by weight of fat, protein and lactose in milk
US4310763A Electro-optical analyzer for measuring percentage by weight of fat, protein and lactose in milk
US793745A Means for removing dust from gases.
GB190416354A Improved Means for Removing Dust from Gases.
GB190416353A Improvements in the Treatment of the Gases Issuing from Pyrites Burners.
US740383A Adjustable brace for doors or gates and cover for same.
GB190207790A Improvements in and relating to Sofas Couches and such like Articles.
GB190202693A Improvements connected with the Manufacture of Lace Window Blinds, Curtains and all similar Goods Made on a Lace Curtain Machine.
GB189809829A Improvements in or relating to the Construction of Bridges and the like.