US2890552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of packaging
Assignee: Union Carbide Corp
•
Filing: 1955-02-04
•
Granted: 1959-06-16
•
Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Henderson William Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/001; B65B25/06; B65B25/065; B65B25/067; Y; Y10; Y10S; Y10S264/00; Y10S264/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN A METHOD OF PROVIDINGA PROTECTIVE SKIN TIGHT COVERING THE STEPS WHICH COMPRISE INSERTING THE ITEM TO BE PACKAGED IN A BAG FORMED FO POLYETHYLENE FILM AND SUDDENLY SUBJECTING THE PACKAGE TO A TEMPERATURE OF MORE THAN 100*C. AND LESS THAN THE MELING POINT OF THE POLYETHYLENE CONSTITUTING THE FILM FOR A SHORT INTERVAL OF TIME.
Claim 2
Dependent Claim
56 words
IN A METHOD OF PROVIDINGA PROTECTIVE SKIN TIGHT COVERING THE STEPS WHICH COMPRISE INSERTING THE ITEM TO BE PACKAGED IN A BAG FORMED FO POLYETHYLENE FILM AND SUDDENLY SUBJECTING THE PACKAGE TO A TEMPERATURE OF MORE THAN 100*C. AND LESS THAN THE MELING POINT OF THE POLYETHYLENE CONSTITUTING THE FILM FOR A SHORT INTERVAL OF TIME.
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US2420310A
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |