Patent US1340899A successfully refreshed from Google Patents.
Patent US4718512A successfully refreshed from Google Patents.
US4151916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging materials
Assignee: ANERO AB
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Filing: 1976-02-04
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Granted: 1979-05-01
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Expires: 1996-02-04
Abstract
Abstract Foil and sheet material, packages and containers provided with an easily openable tear means. The foil or sheet construction being formed with a layer of weldable material arranged to form a flap and welded along the base line of the flap to provide a reinforced seam.
Inventors
- 👤 Sven A. Eriksson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:51
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5827; B29; B29C; B29C53/00; B29C53/36; B65D75/28; B65D75/30; B65D75/40; B65D75/42; Y; Y10; Y10S; Y10S229/00; Y10S229/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A package comprising two planar laminated sheets each having a layer of thermoplastic material combined with a second layer of non-thermoplastic material, the sheets being joined together by face-to-face heat sealing of their respective thermoplastic layers at the perimetral edges of the two sheets, one of said sheets being folded over itself along a base line parallel to and substantially spaced from an edge of said sheet to form a flap free of the surface of said sheet and welding together two portions of its internal thermoplastic layer along the peripheral edges and base line of said fold to form a seam along which said one sheet may be torn in two and said package opened by pulling the flap and adhering portion of said one sheet away from the other sheet, leaving the remaining portion of said one sheet attached to the other of said two sheets.
Claim 2
Dependent Claim
148 words
A package comprising two planar laminated sheets each having a layer of thermoplastic material combined with a second layer of non-thermoplastic material, the sheets being joined together by face-to-face heat sealing of their respective thermoplastic layers at the perimetral edges of the two sheets, one of said sheets being folded over itself along a base line parallel to and substantially spaced from an edge of said sheet to form a flap free of the surface of said sheet and welding together two portions of its internal thermoplastic layer along the peripheral edges and base line of said fold to form a seam along which said one sheet may be torn in two and said package opened by pulling the flap and adhering portion of said one sheet away from the other sheet, leaving the remaining portion of said one sheet attached to the other of said two sheets.
References Cited (Backward Citations)
US2053116A
Cited
US2973087A
Cited
US3070102A
Cited
US3214013A
Cited
US3381884A
Cited
US3456876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |