Patents by Inventor Joseph P. Portsmouth

Joseph P. Portsmouth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4441648
    Abstract: A hermetically sealed carton formed from a single die cut blank of laminated or coated paperboard stock having a uniquely configured bottom seal die cut requiring a minimum of seals at folded miters during setting up of the carton. The die cut blank comprises a bottom panel and first and second opposed side wall panels attached to opposed first and second edges thereof. Third and fourth opposed side wall panels are attached to opposed edges of the first side wall panel, while overlapping side sealing flaps are attached to opposed edges of the second side wall panel. The third and fourth opposed edges of the bottom and the bottom edges of the third and fourth side wall panels are formed with contiguous truncated triangular sealing flaps which are folded against the bottom of the carton during set up thereof.
    Type: Grant
    Filed: April 8, 1982
    Date of Patent: April 10, 1984
    Assignee: Nabisco Brands, Inc.
    Inventor: Joseph P. Portsmouth