Learn more

R O HULL & COMPANY INC

Overview
  • Total Patents
    24
About

R O HULL & COMPANY INC has a total of 24 patent applications. Its first patent ever was published in 1956. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets surface technology and coating, machines and organic fine chemistry are HPC HIGH PERFORMANCE COATING O, BLASBERG GMBH & CO KG FRIEDR and OSTROVSKY ILYA.

Patent filings in countries

World map showing R O HULL & COMPANY INCs patent filings in countries
# Country Total Patents
#1 United States 17
#2 Canada 4
#3 Australia 1
#4 Spain 1
#5 United Kingdom 1

Patent filings per year

Chart showing R O HULL & COMPANY INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Eckles William E 8
#2 Rosenberg William E 6
#3 Willis William J 5
#4 Ferguson Wilfred J 2
#5 Jackson Joseph L 2
#6 Eckles William Edward 2
#7 Zelmder Joseph A 1
#8 Beckwith Merton M 1
#9 Starinshak Thomas W 1
#10 Starinshak Thomas Walter 1

Latest patents

Publication Filing date Title
US4146442A Zinc electroplating baths and process
US4146441A Additive compositions, baths, and methods for electrodepositing bright zinc deposits
US4139425A Composition, plating bath, and method for electroplating tin and/or lead
US4134803A Nitrogen and sulfur compositions and acid copper plating baths
US4165242A Treatment of metal parts to provide rust-inhibiting coatings by phosphating and electrophoretically depositing a siccative organic coating
US4135991A Bath and method for electroplating tin and/or lead
CA1046977A Naphthalene monocarboxaldehyde brightening agents for electrolytically plating tin
US4075066A Electroplating zinc, ammonia-free acid zinc plating bath therefor and additive composition therefor
US4076600A Leveling agent for acid zinc electroplating baths and method
US4038161A Acid copper plating and additive composition therefor
US3956123A Additive for electrodeposition of bright tin and tin-lead alloy
US3862019A Composition of electroplating bath for the electrodeposition of bright nickel
US3887445A Method for the reduction of zinc ion concentration and removal of organic impurities in a neutral or acidic, aqueous zinc plating bath
US3875029A Plating bath for electrodeposition of bright tin and tin-lead alloy
CA1007594A Additive for electrodeposition of bright, stain-free zinc from aqueous acid chloride electroplating baths
US3296141A Bright dip compositions for the treatment of steel
US3298876A Process and composition for forming clear protective coatings on cadmium metal surfaces
US3121053A Analytical electroplating apparatus
US2860089A Method of electro depositing zinc