US3196195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing tearable laminates
Assignee: Kendall Co
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Filing: 1961-10-12
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Granted: 1965-07-20
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Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 Tritsch Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C43/00; B29C43/22; B29C43/30; B29C43/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS WHEREBY A LOW DENSITY POLYETHYLENE SHEET IS PRODUCED CAPABLE OF BEING TORN IN A SUBSTANTIALLY STRAIGHT LINE WHICH COMPRISES FORMING A SHEET OF A UNIDIRECTIONALLY MOLECULARLY ORIENTED, LINEAR, CRYSTALLINE POLYALKENE FROM A MOLTEN BULK OF SAID POLYALKENE AND, WHILE THE SURFACE OF SAID SHEET POYALKENE IS THERMALLY SOFTENED AFTER FORMATION THEREOF, FORMING A LAYER OF LOW DENSITY
Claim 2
Dependent Claim
59 words
THE PROCESS WHEREBY A LOW DENSITY POLYETHYLENE SHEET IS PRODUCED CAPABLE OF BEING TORN IN A SUBSTANTIALLY STRAIGHT LINE WHICH COMPRISES FORMING A SHEET OF A UNIDIRECTIONALLY MOLECULARLY ORIENTED, LINEAR, CRYSTALLINE POLYALKENE FROM A MOLTEN BULK OF SAID POLYALKENE AND, WHILE THE SURFACE OF SAID SHEET POYALKENE IS THERMALLY SOFTENED AFTER FORMATION THEREOF, FORMING A LAYER OF LOW DENSITY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |