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DERBY SEALERS INC

Overview
  • Total Patents
    77
About

DERBY SEALERS INC has a total of 77 patent applications. Its first patent ever was published in 1939. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets packaging and shipping, machines and electrical machinery and energy are MANDAR MARTINE, NAMEKAWA EIJIRO and SEED RUBBER CO LTD.

Patent filings in countries

World map showing DERBY SEALERS INCs patent filings in countries
# Country Total Patents
#1 United States 53
#2 United Kingdom 14
#3 Germany 9
#4 France 1

Patent filings per year

Chart showing DERBY SEALERS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Krueger Alfred P 40
#2 Erhardt Oscar P 14
#3 Krueger Alfred Paul 10
#4 Aldrich John W 3
#5 Shee William S 1
#6 Bergmark John C 1
#7 Erhardt Oscar Paul 1

Latest patents

Publication Filing date Title
GB870327A Tape-dispensing mechanism
US2861539A Tape dispenser with tape-heating means
GB807665A A bag-tying machine
GB812205A A tape-dispensing machine
GB814841A A bag-tying machine
US2841935A Bag-tying machine
US2955500A Tape dispenser having cam operated cutter
US2787102A Bag-tying machines
GB769637A Improvements in or relating to hand tape dispenser
US2777594A Hand tape dispensers
GB740328A Improvements in or relating to a tape-dispensing machine
GB734645A Improvements in or relating to a mechanism for dispensing pressure-sensitive tape
GB734646A Improvements in or relating to a machine for dispensing pressure-sensitive tape
US2725938A Dispenser for pressure-sensitive tape having a severing blade arranged to be moved away from its operative position
US2866502A Tape-dispensing mechanism
US2761503A Mechanism for progressively severing tape
GB717956A Improvements in or relating to a device for dispensing pressure-sensitive adhesive tape
GB717955A Improvements in or relating to a mechanism for dispensing pressure-sensitive adhesive tape
GB717954A Improvements in or relating to mechanism for dispensing pressure-sensitive adhesive tape
US2695057A Machine for dispensing tape