Learn more

POLYGRAM CASTING CO LTD

Overview
  • Total Patents
    41
About

POLYGRAM CASTING CO LTD has a total of 41 patent applications. Its first patent ever was published in 1947. It filed its patents most often in United Kingdom, Canada and United States. Its main competitors in its focus markets materials and metallurgy, macromolecular chemistry and polymers and basic materials chemistry are FORDATH ENGINEERING COMPANY LT, ASHLAND SUEDCHEMIE KERNFEST and PREC METALSMITHS.

Patent filings in countries

World map showing POLYGRAM CASTING CO LTDs patent filings in countries

Patent filings per year

Chart showing POLYGRAM CASTING CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Taylor George William 5
#2 Worthington John Edward 5
#3 Fallows John 4
#4 Woodhead James Seward 4
#5 Worthington John E 4
#6 Hopkins Jack Rowland 3
#7 Edward Worthington John 3
#8 Worthington J E 2
#9 Worthington J 2
#10 Jenkins Gwynville 2

Latest patents

Publication Filing date Title
US3741276A Method of making shell moulded articles therefor
GB1336714A Methods of making shell-moulded articles and apparatus therefor
US3613769A Shell-molding machine with pivotable investment bin
GB1098661A Improvements in or relating to methods and apparatus for manufacturing shell moulds and cores
ES264297A1 Procedure for the preparation of a thermostable composition (Machine-translation by Google Translate, not legally binding)
GB979991A Improvements in or relating to thermosetting compositions based on carbohydrates
GB923499A Improvements in or relating to methods of and apparatus for producing shell moulds
GB928451A Improvements in thermosetting material
GB923771A Improvements in and relating to thermosetting products prepared from syrups and tannins
GB826966A Apparatus for replenishing with pulverulent material a receptacle in which such material is kept under air pressure for delivery into core boxes, mould patterns or the like
GB821611A Improvements in or relating to methods of making shell moulds
GB798161A Improvements in or relating to a method for producing hollow cores for foundry purposes
GB798162A Improvements in or relating to apparatus for producing hollow cores for foundry purposes
GB795441A Improvements in or relating to apparatus for producing hollow cores for foundry purposes
GB795442A Improvements in or relating to apparatus for producing hollow cores for foundry purposes
GB795443A Improvements in or relating to apparatus for producing hollow cores for foundry purposes
US2844853A Apparatus for producing shell molds
GB748085A Improvements in methods of and apparatus for producing shell moulds
GB773684A Improvements in or relating to lubricants for use in making shell moulds and cores
GB668821A Improvements in or relating to methods of casting moulded articles