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PFIZER CHARLES & CO

Overview
  • Total Patents
    53
About

PFIZER CHARLES & CO has a total of 53 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and machines are MERCKLE KG LUDWIG, QUIM SINTETICA S A and BERGER FRANK M.

Patent filings in countries

World map showing PFIZER CHARLES & COs patent filings in countries
# Country Total Patents
#1 United States 42
#2 United Kingdom 10
#3 Germany 1

Patent filings per year

Chart showing PFIZER CHARLES & COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Richard Pasternack 36
#2 Regna Peter P 7
#3 Ralph Giles William 5
#4 Brown Ellis V 5
#5 Davenport John L 3
#6 Currie James N 3
#7 Ammerman Clinton P 3
#8 Alexander Finlay 2
#9 Arthur Patelski Ray 2
#10 Kane Jasper H 2

Latest patents

Publication Filing date Title
GB559302A Improvements in or relating to ª‡-galacturonic acid and ª•-galactonic acid and derivatives thereof
US2308385A Preparation of carboxylic acid esters and lactone
US2332666A Acetylated sugar compound
US2363108A Laxatives
US2324800A Purification of riboflavin
GB551491A Improvements in or relating to the preparation of tetraacylated n-aryl ribitylamines
GB545471A Improvements in or relating to the preparation of stable magnesium acid citrate
GB545360A Improvements in or relating to the preparation of tetraacylated ribonyl derivatives
GB547594A Improvements in or relating to production of fumaric acid
US2277872A Products from tartaric acid
US2250999A Acylated nu-aryl glucamines
US2237263A Process of preparing aldehydo acylated ribose, and product thereof
GB538945A Improvements in or relating to the preparation of d-tartaric acid
US2260004A Stable soluble magnesium acid citrate
GB534746A Improvements in or relating to the preparation of salts or esters of 2-keto aldonic acids
US2207991A Preparation of esters of 2-ketoaldonic acids by oxidation of aldonic acids, their lactones and esters
US2203923A Preparation of salts of 2-ketoaldonic acids
GB530822A Improvements in or relating to the production of a mixture of calcium d-gluconate and calcium l-idonate, and to the production of l-idonic acid and salts thereof
GB521831A Improvements in or relating to the production of ascorbic acids
US2168879A Preparation of stable concentrated solutions of therapeutically useful calcium compounds