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HEYDEN CHEMICAL CORP

Overview
  • Total Patents
    94
About

HEYDEN CHEMICAL CORP has a total of 94 patent applications. Its first patent ever was published in 1928. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and basic materials chemistry are PINKOS ROLF, MOSSI & GHISOLFI OVERSEAS SA and WANXIANG TECH CO LTD.

Patent filings in countries

World map showing HEYDEN CHEMICAL CORPs patent filings in countries
# Country Total Patents
#1 United States 68
#2 Canada 18
#3 France 4
#4 United Kingdom 3
#5 Germany 1

Patent filings per year

Chart showing HEYDEN CHEMICAL CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barth Robert H 21
#2 Harry Burrell 11
#3 Bowman Philip I 8
#4 Klein David X 8
#5 Cake William R 7
#6 Burrell Harry 6
#7 Snow John E 6
#8 Herman Sokol 4
#9 Hammond Philip D 4
#10 Harris Robert W 3

Latest patents

Publication Filing date Title
US2766249A Production of stilbene derivatives and products
US2763679A Production of pentaerythritol chlorides
US2766173A Alkylamino 2-oxy-3-naphthoamide anesthetic compositions
US2719867A Purification of pentaerythritol
US2773908A Separation and purification of phloroglucinol
US2749362A Process for the decolorization and purification of p-hydroxybenzoic acid
US2696507A Pentaerythritol crystallization process
US2743231A Process for the dyeing of nylon fibers and fabrics with 5-chlorosalicylic acid
US2658920A Process for the manufacture of benzil
US2723290A Process for the crystallization of 2-hydroxy-3-naphthoic acid
US2775622A 2, 2-dimethylol-1, 5-dihydroxypentane and derivatives thereof
US2692203A Softener and flame-resistant coating composition, method of its application to cellulosic materials and the article produced thereby
US2611753A Process for producing synthetic rubbers containing tackifiers and softeners and product thereof
US2611752A Tackifiers and softeners for synthetic rubbers and compositions containing the same
US2608660A Apparatus for halogenation
US2653151A Purification of streptomycin
US2542971A Procaine urea salicylate and process of obtaining the same
US2657186A Composition comprising a polyvinyl chloride resin, a plasticizer and a viscosity controlling agent
US2548433A Plastisols containing nitrogenous viscosity controlling agents
US2640054A Process of crystallizing dihydrostreptomycin sulfate