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PERKINS & SON INC B F

Overview
  • Total Patents
    68
About

PERKINS & SON INC B F has a total of 68 patent applications. Its first patent ever was published in 1910. It filed its patents most often in United States, United Kingdom and Switzerland. Its main competitors in its focus markets textiles and paper, measurement and chemical engineering are NELES PAPER AUTOMATION OY, VALMET AUTOMATION INC and COLAB LAB INC.

Patent filings in countries

World map showing PERKINS & SON INC B Fs patent filings in countries
# Country Total Patents
#1 United States 63
#2 United Kingdom 3
#3 Switzerland 1
#4 Germany 1

Patent filings per year

Chart showing PERKINS & SON INC B Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Getchell Raymond E 13
#2 Shorrock James P 6
#3 Senna Samuel N 5
#4 Bidwell Paul W 4
#5 Kurt Zimmerli 3
#6 Archibald Lade 3
#7 Stevens Cyril J 3
#8 Stanley John O 2
#9 Lade Archibald C 2
#10 Wilkinson Vernon L 2

Latest patents

Publication Filing date Title
US3383749A Cotton filled calender roll and method of making
GB1113208A Heated roll
US3367262A Calender roll-out mechanism
US3244090A Calender
US2936699A Removable roll means for calender
US2941465A Removable roll means for calender
US2900747A Calender apparatus
US2869411A Turning apparatus
US2817245A Driving mechanism
US2799156A Apparatus for testing coated porous material
US2826063A Hydraulic rupture testing machine
US2753591A Apparatus for heating a thermoplastic web and feeding it to an embossing means
US2609568A Apparatus and method of embossing thermoplastic sheets
US2557184A Pressure operated rupture testing machine
US2563833A Manually operated hydraulic clamping means for testing machines
US2509143A Diaphragm construction for specimen bursting machines
US2509142A Testing machine for rupturing specimens
US2518959A Apparatus for testing the crush strength of paper
US2525345A Machine for rupturing paper and the like for testing purposes
GB651978A Improvements in and relating to fibre cleaning machines