Patent assignee · US · COMPANY

Zip-Pak, Inc.

32Patents
0Active
32Granted
37Portfolio score

Filing activity: Dec 10, 1987 → Sep 27, 1990

Most-cited patents

PatentTitleAreaCited byStatus
US5024537A Tape carried pre-cut zipper Emerging Cross-Sectional Technologies 95 Expired
US4947525A Zipper closure with internal peel seal Emerging Cross-Sectional Technologies 83 Expired
US5085031A Transverse zipper application for horizontal form, fill and seal machine Performing Operations; Transporting 81 Expired
US4840012A Zippered film feed Performing Operations; Transporting 75 Expired
US5063639A Zippered closure for packages Emerging Cross-Sectional Technologies 75 Expired
US5096516A Method of making dual reuseable pouches Emerging Cross-Sectional Technologies 59 Expired
US4941307A Zipper guide system for form tooling Performing Operations; Transporting 58 Expired
US5063069A Zippered closure for thermoformed package Performing Operations; Transporting 55 Expired
US4896775A Zippered thermal form tray system Performing Operations; Transporting 55 Expired
US4869048A Stretcher for package forming Performing Operations; Transporting 55 Expired
US4974395A Zipper guide and spreader device for form, fill and seal machines Emerging Cross-Sectional Technologies 54 Expired
US4993212A Method and apparatus for guiding a zippered film in form, fill and seal package making machines Emerging Cross-Sectional Technologies 53 Expired
US5072571A Zippered film plural sheet strip guide system and method for zippered film for form, fill and seal package making machines Performing Operations; Transporting 51 Expired
US4949527A Method of forming a reclosable tray Performing Operations; Transporting 45 Expired
US4986054A Fill tube spreader Performing Operations; Transporting 45 Expired
US5042224A Zipper tracking in form, fill and seal package machines Emerging Cross-Sectional Technologies 44 Expired
US5067302A Sealing jaws for zippered foil or film in form, fill and seal machines Performing Operations; Transporting 34 Expired
US5015223A Hotseal jaws and cutoff knife assembly for processing thermoplastic film bag making material Performing Operations; Transporting 33 Expired
US5071689A Hinged zipper Emerging Cross-Sectional Technologies 29 Expired
USD342220S Snowmobile hood General 29 Expired
US5026563A Zippered closure for thermoformed package Performing Operations; Transporting 24 Expired
US5065899A Sectional or pre-cut zipper strips, magazine storage and feed means, and method Emerging Cross-Sectional Technologies 24 Expired
US5047002A Apparatus and method for making Z-folded zippered film Performing Operations; Transporting 21 Expired
US5014499A Stretch stress relief for bag thermo-cross-seals in vertical form, fill and seal machines Performing Operations; Transporting 19 Expired
US5054270A Bag support/spreader for vertical form, fill and seal machines Performing Operations; Transporting 18 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.