P

Inventor

MATTHEWS DAVID J

US33 patents
⚠️ This page may combine multiple inventors who share the name “MATTHEWS DAVID J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ILLINOIS TOOL WORKS

13 patents
US6138436AOct 31, 2000

Feeding of horizontal form-fill-and-seal zipper machine

ILLINOIS TOOL WORKS91 citations98
US7490451B2Feb 17, 2009

Method and apparatus for making block bottom pillow top bags

ILLINOIS TOOL WORKS24 citations92
US7261468B2Aug 28, 2007

Easy open feature for reclosable bags having a longitudinal fin seal

ILLINOIS TOOL WORKS37 citations92
US6910995B2Jun 28, 2005

Easy open feature for reclosable bags having a longitudinal fin seal

ILLINOIS TOOL WORKS27 citations92
US6874298B2Apr 5, 2005

Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines

ILLINOIS TOOL WORKS20 citations92
US6751932B1Jun 22, 2004

Method for attaching reclosable zipper strip transversely to a sheet of thermoplastic film material

ILLINOIS TOOL WORKS33 citations92
US6474045B2Nov 5, 2002

Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines

ILLINOIS TOOL WORKS19 citations92
US6428642B1Aug 6, 2002

Transverse directional zipper with a double seal flange profile configuration

ILLINOIS TOOL WORKS23 citations92
US6151868ANov 28, 2000

Transverse direction zipper attaching apparatus and method

ILLINOIS TOOL WORKS38 citations92
US7527585B2May 5, 2009

Methods of making reclosable packages for vacuum, pressure and/or liquid containment

ILLINOIS TOOL WORKS16 citations82
US7347908B2Mar 25, 2008

Leakproof zipper end crush for reclosable bag and related method of manufacture

ILLINOIS TOOL WORKS8 citations74
US6397561B1Jun 4, 2002

Transverse direction zipper with edges unsecured

ILLINOIS TOOL WORKS12 citations74
US6810639B1Nov 2, 2004

Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines

ILLINOIS TOOL WORKS7 citations72

MEI PHARMA INC

5 patents

GENENTECH INC

4 patents

KNOWLES W JEFFREY

3 patents

EXELIXIS INC

1 patent

(unassigned)

1 patent

PERKIN ELMER CORP

1 patent

BROWN S DAVID

1 patent

ANZINI DAVID J

1 patent

MTREX INC

1 patent

MCMAHON MICHAEL J

1 patent

MATTHEWS DAVID J

1 patent