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CHAPMAN JOHN R

Overview
  • Total Patents
    11
About

CHAPMAN JOHN R has a total of 11 patent applications. Its first patent ever was published in 1915. It filed its patents most often in United States, Canada and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets chemical engineering, medical technology and measurement are LEACH MICHAEL D, HALCYON BIOMEDICAL INCORPORATED and HARVEST TECHNOLOGIES CORP.

Patent filings in countries

World map showing CHAPMAN JOHN Rs patent filings in countries

Patent filings per year

Chart showing CHAPMAN JOHN Rs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chapman John R 11
#2 Cinquini Brian K 4
#3 Sparks Rodney 4
#4 Kumar Vijay 4
#5 Kingsley Phillip D 4
#6 Coelho Philip H 3

Latest patents

Publication Filing date Title
US2012213754A1 Method of Preconditioning of Cell Suspensions
US2012065047A1 Centrifuge and separation vessel therefore
US2013045852A1 Centrifuge separation method and apparatus using a medium density fluid
US2010140182A1 Apparatus and method for separating and isolating components of a biological fluid
US1188151A Method and apparatus for hulling grain.
CA11909A Improvments on carriage tops