Walter H. Donnellan

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Jessup, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Heat sealed paperboard carton having a patterned solvent-based poly...
- Patent number 5,415,340
- Issue date May 16, 1995
- Westvaco Corporation
- Barry G. Calvert
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Product and process for heat sealing a paperboard carton having pol...
- Patent number 5,228,272
- Issue date Jul 20, 1993
- Westvaco Corporation
- Barry G. Calvert
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Heat sealed paperboard carton having polymer coating on one side only
- Patent number 5,217,159
- Issue date Jun 8, 1993
- Westvaco Corporation
- Barry G. Calvert
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL