US3172801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sealable waxed packaging mate- rial and process of making the same
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:42
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31714; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A COMPOSITE PACKAGING SHEET COMPRISING A SHEET OF PAPER, AN ALUMINUM FOIL, AND AN INTERMEDIATE HEAT-SEALED FILM ADHESIVELY UNITING SAID PAPER SHEET AND FOIL, SAID FILM COMPRISING ESSENTIALLY A WAX COMPOSITION CONTAINING FROM 0.01 TO 20% BY WEIGHT BASED ON SAID COMPOSITION OF A PARTLY OXIDIZED POLYETHYLENE, SAID FILM BEING PRESENT IN AN AMOUNT SUFFICIENT TO PRODUCE A STRONG BOND RESISTANT TO DELAMINATION BETWEEN SAID PAPER SHEET AND SAID FOIL AT A HEAT-SEALING TEMPERATURE OF SAID FILM, SAID PARTLY OXIDIZED POLYETHYLENE RESULTING FROM THE OXIDATION OF POLYETHYLENE ALONE.
References Cited (Backward Citations)
GB581279A
Cited
US2471102A
Cited
US2582037A
Cited
US2601109A
Cited
GB713634A
Cited
US2773045A
Cited
US2698309A
Cited
US2943069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |