Learn more

HARPER & TUNSTALL LTD

Overview
  • Total Patents
    22
About

HARPER & TUNSTALL LTD has a total of 22 patent applications. Its first patent ever was published in 1963. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets optics, packaging and shipping and machine tools are METEOR SIEGEN APPARAT SCHMECK, E & H T ANTHONY & COMPANY and HIRAKAWA KOGYOSHA KK.

Patent filings per year

Chart showing HARPER & TUNSTALL LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ashburner Adi Kaikhushiroo 7
#2 Ashburner Adi Kaikhushroo 3
#3 Ashburner Adi K 2
#4 Ashburner A 1
#5 Kaikhushroo Ashburner Adi 1
#6 Ashburner Adi 1

Latest patents

Publication Filing date Title
GB8330872D0 Dielectric film
EP0037650A1 Zig-zag folding machines
WO8102881A1 Zig-zag folding machines
US4228992A Sheet selecting and dispensing apparatus
US4000671A Transport guide for pliable sheet material
GB1434583A Monitoring of web or sheet feeding apparatus
GB1381779A Transport guide for pliable sheet material
GB1192644A Liquid Developer Unit for Developing Photosensitive Materials
DE1259703B Diazo copier
GB1026518A Improvements relating to filing cabinets
GB1001125A Diazotype printing machine