Patent US4199661A successfully refreshed from Google Patents.
Patent US3697369A successfully refreshed from Google Patents.
US3697369A
Expired / Lapsed
US
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Plastic lined receptacle or the like
Assignee: OI Glass Inc
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Filing: 1969-12-10
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Granted: 1972-10-10
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Expires: 1989-12-10
Abstract
Abstract MOLDED PULP PLATE HAVING CONTINUOUS AND UNSEAMED LINER OF POLYPROPYLENE FILM BONDE%D TO ITS INTERIOR SURFACES BY POLYETHYLENE. UNDERSIDE OF POLYPROPYLENE FILM MAY BE PRINTED WITH DECORATIVE DESIGN. METHOD INCLUDES CLAMPING A SHEET OF POLYPROPYLENE FILM, HAVING POLYETHYLENE COATING ON ITS UNDERSIDE SURFACE, AGAINST THE MOUTH RIM OF THE PLATE; HEATING THE PLATE AND FILM TO A TEMPERATURE WHICH IS ABOVE THE SOFTENING POINT TEMPERATURE OF THE POLYETHYLENE MATERIAL BUT BELOW THE SOFTENING POINT TEMPERATURE OF POLYPROPYLENE; AND DRAWING A VACUUM THROUGH THE BOTTOM OF THE PLATE TO PRESS THE FILM AGAINST THE INTERIOR OF THE PLATE.
Inventors
- 👤 Stephen W Amberg
- 👤 Ralph G Amberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:20
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/428; B29C51/04; B29C51/06; B29C51/10; B29C51/14; B29C51/16; B29C51/162; B29C63/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |