Patent US3666586A successfully refreshed from Google Patents.
US3188265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging films
Assignee: 3M Co
•
Filing: 1957-11-12
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Granted: 1965-06-08
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Robert R Charbonneau
- 👤 Joseph F Abere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A COMPOSITE LAMINATED TRANPARENT FILM HAVING A TOTAL COMPOSITE THICKNESS IN THE RANGE OF ABOUT 1 TO 10 MILS AND COMPRISING PREFORMED POLYMER LAYERS AND BEING HEATSEALABLE AT MODERATELY ELEVATED TEMPERATURES BELOW ABOUT 400*F., SAID FILM CONSISTING ESSENTIALLY OF A THIN, TOUGH, DIFFICULTY HEAT-SEALABLE ORGANIC POLYMER AS A FILM LAYER, AND A PREFORMED READILY HEAT-SEALABLE ORANIC POLYMER AS A FILM LAYER SURFACING AT LEAST ONE SIDE THEREOF AND BEING SELF-UNIFIED THEREWITH AND CHEMICALLY INTERFACIALLY BONDED THERETO, THE INTERFACIAL UNION OF THE LAYERS WITH ONE ANOTHER BEING SO STRONG THAT THE LAYERS CANNOT BE MECHANICALLY SEPARATED.
Claim 2
Dependent Claim
95 words
A COMPOSITE LAMINATED TRANPARENT FILM HAVING A TOTAL COMPOSITE THICKNESS IN THE RANGE OF ABOUT 1 TO 10 MILS AND COMPRISING PREFORMED POLYMER LAYERS AND BEING HEATSEALABLE AT MODERATELY ELEVATED TEMPERATURES BELOW ABOUT 400*F., SAID FILM CONSISTING ESSENTIALLY OF A THIN, TOUGH, DIFFICULTY HEAT-SEALABLE ORGANIC POLYMER AS A FILM LAYER, AND A PREFORMED READILY HEAT-SEALABLE ORANIC POLYMER AS A FILM LAYER SURFACING AT LEAST ONE SIDE THEREOF AND BEING SELF-UNIFIED THEREWITH AND CHEMICALLY INTERFACIALLY BONDED THERETO, THE INTERFACIAL UNION OF THE LAYERS WITH ONE ANOTHER BEING SO STRONG THAT THE LAYERS CANNOT BE MECHANICALLY SEPARATED.
References Cited (Backward Citations)
US2999772A
Cited
US2715075A
Cited
US2668133A
Cited
US2815308A
Cited
US2824026A
Cited
US2845541A
Cited
US2907675A
Cited
US2876067A
Cited
US2875092A
Cited
US2919659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |