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L A DREYFUS COMPANY

Overview
  • Total Patents
    11
About

L A DREYFUS COMPANY has a total of 11 patent applications. Its first patent ever was published in 1927. It filed its patents most often in United States and Canada. Its main competitors in its focus markets foods and drinks, macromolecular chemistry and polymers and organic fine chemistry are ISERNIA AG, DANDY AS and WALTER HOERNLEIN METALLWARENFA.

Patent filings in countries

World map showing L A DREYFUS COMPANYs patent filings in countries
# Country Total Patents
#1 United States 10
#2 Canada 1

Patent filings per year

Chart showing L A DREYFUS COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Overberger Charles G 2
#2 Dyckman Richard P 2
#3 Tyler Walter A 2
#4 Giardina John C 1
#5 Alfrey Jr Turner 1
#6 Phillips Michael 1
#7 De Angelis Frank T 1
#8 Stark Raymond 1
#9 Raymond Stark 1
#10 Fore Earl 1

Latest patents

Publication Filing date Title
US5248228A Apparatus for conveying powder
US4717404A Dust separator
US4117645A Method for handling and transporting thermoplastic materials
US2802812A P-alkyl styrenes and their polymers
US2687422A P-acyloxystyrenes and intermediates therefor
US2740772A Side-chain crystalline copolymers from polymerizable monomers having a substituent crystallizable organic group and having no substituent crystallizable group respectively
US2284804A Chewing gum base and method of preparing same
US2198865A Gum and process of treating same
US2060461A Bubble chewing gum and process of making same
US1714331A Filter press
CA295764A Filter press