Patent US4284199A successfully refreshed from Google Patents.
US4284199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with tear-opening arrangement
Assignee: LEZARD SA
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Filing: 1979-12-06
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Granted: 1981-08-18
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Expires: 1999-12-06
Abstract
Abstract A container with tear-opening device particularly suitable for single-dose containers, obtained by the injection of thermoplastic material in opposite molds, and consisting of a closure membrane having a particularly thin tear surface as to constitute a preferential rupture zone, having a section thermically calibrated by the shrinking (on cooling after injection). A process for obtaining said containers is also disclosed and claimed.
Inventors
- 👤 Federico Bigarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/10; B65D47/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A container with a tear-opening device particularly suitable for single-dose containers, obtained by the injection of thermoplastic material into suitable molds, consisting essentially of a closure membrane having a preferential rupture section comprising a particularly thin tearing surface, wherein there is present an internal annular lip, obtained in an injection single piece, having the function of favoring the dropwise dosage of the container content.
Claim 2
Dependent Claim
64 words
A container with a tear-opening device particularly suitable for single-dose containers, obtained by the injection of thermoplastic material into suitable molds, consisting essentially of a closure membrane having a preferential rupture section comprising a particularly thin tearing surface, wherein there is present an internal annular lip, obtained in an injection single piece, having the function of favoring the dropwise dosage of the container content.
References Cited (Backward Citations)
US3858739A
Cited
US4134511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |