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PIERCE & STEVENS CORP

Overview
  • Total Patents
    39
About

PIERCE & STEVENS CORP has a total of 39 patent applications. Its first patent ever was published in 1987. It filed its patents most often in United States, Australia and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets machines, chemical engineering and basic materials chemistry are TODA KOGYO K K, ECC AMERICA INC and COLORES HISPANIA.

Patent filings per year

Chart showing PIERCE & STEVENS CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Melber George E 37
#2 Oswald William A 19
#3 Wolinski Leon E 18
#4 Wolinski Leon 8
#5 William A Oswald 2
#6 Leon E Wolinski 2
#7 George E Melber 2
#8 Schaffer Stephen P 1
#9 Mccabe Patrick J 1
#10 Gerace Michael J 1

Latest patents

Publication Filing date Title
US5658969A Light weight plastisols and method of making same
AU658430B2 Process for drying microspheres
US5112657A Simulated marble products
US5180752A Process for making dry microspheres
CA1339247C Opacifiers for paints and coatings
AU4045989A Opacifiers for paints and coatings
US4912139A Preparation of opacifier intermediates
US4898892A Methods for preparing opaque coatings and applying the same
US4888241A Low density composite opacifiers
US5011862A Coating media containing low density composite opacifiers
US4898894A Film forming binders containing low density composite opacifiers
US4917861A Palladium alloy containing germanium and/or lithium and dental restorations utilizing same
US4902722A Expandable graphic art printing media using a syntactic foam based on mixture of unexpanded and expanded hollow polymeric microspheres
US4722943A Composition and process for drying and expanding microspheres