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TWINOAK PRODUCTS INC

Overview
  • Total Patents
    18
About

TWINOAK PRODUCTS INC has a total of 18 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets civil engineering, machines and chemical engineering are W C TECHNOLOGY CORP, JOHANSEN OLE BJERKE and INT WATER SAVING SYST INC.

Patent filings in countries

World map showing TWINOAK PRODUCTS INCs patent filings in countries
# Country Total Patents
#1 United States 6
#2 Canada 4
#3 Australia 2
#4 Brazil 1
#5 Germany 1
#6 EPO (European Patent Office) 1
#7 France 1
#8 United Kingdom 1
#9 Israel 1

Patent filings per year

Chart showing TWINOAK PRODUCTS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Meloy Gilbert K 9
#2 Mcduffee Richard L 3
#3 Mcduffee R 2
#4 Mcdufee R L 1
#5 Mcduffee Reichard L 1

Latest patents

Publication Filing date Title
US4668475A Cleaning and disinfecting method and article of manufacture including color display
US4539179A Method for cleansing and disinfecting toilet tanks and bowls
US4605534A Cleaning and disinfecting systems including color display means
US4587069A Process for producing color display means
US4435857A Apparatus for cleansing and disinfecting toilet tanks and bowls
US4277853A For toilet bowl cleaning
GB2067409A Improved system for toilet bowl cleaning
CA967703A System for toilet bowl cleaning
CA933859A Absorbent pad structures for humidifiers