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CROWN ZELLERBACH CORP

Overview
  • Total Patents
    1,245
About

CROWN ZELLERBACH CORP has a total of 1,245 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets packaging and shipping, machines and textiles and paper are SONOCO PRODUCTS CO, MAJER CHRISTIAN GMBH CO KG and COMBIBLOC INC.

Patent filings per year

Chart showing CROWN ZELLERBACH CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Reba Imants 89
#2 Herschler Robert J 47
#3 Hartbauer Ellsworth A 38
#4 Goheen David W 32
#5 Weis Rudolf R 26
#6 George Walter C 22
#7 Reba I 21
#8 Cisney Merle E 20
#9 Fallert Clifford D 19
#10 Hearon William M 18

Latest patents

Publication Filing date Title
US4644045A Method of making spunbonded webs from linear low density polyethylene
US4574996A Multi-cell container
US4585159A Collapsible container and frame
CA1247809A Spent pulping liquor recovery process
US4637858A Pyrolysis of black liquor at high temperatures using radiant energy
US4597573A System for handling discrete sheets
US4582555A Heatseal die
US4542842A Pneumatic conveying method for flexible webs
US4576675A System for securing a plurality of objects together with adhesive tape
US4548081A Ultrasonic softness testing system
US4539259A Laminate for making tubes
US4643775A Fabric conditioning and cleaning system
US4534399A Paper stock diffuser system
US4573633A Corner lock on paperboard baking and shipping tray
US4499801A Web slitting and grooving method
WO8402707A1 Films of linear low density polyethylene having improved impact strength
US4547349A Method of slaking lime
US4548770A Subjecting film to corona discharge prior to compression rolling
US4505412A Pneumatic conveyor system for flexible webs
US4483712A Water-borne laminating ink