Patent US2643226A successfully refreshed from Google Patents.
US2932323A
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Polyethylene articles
Assignee: Individual
•
Filing: 1957-02-25
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Granted: 1960-04-12
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert S Aries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:53
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/03; B29C48/09; B29C48/16; B29C48/18; B29C48/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A STRONG POLYOLEFIN ARTICLE RESISTANT TO ENVIRONMENTAL STRESS CRACKING COMPRISING A BASE OF CRYSTALLINE POLYOLEFIN AND A LAYER OF AMORPHOUS POLYOLEFIN INTEGRALLY BONDED TO SAID BASE, SAID AMORPHOUS LAYER PREVENTING ACCESS TO THE UNDERLYING CRYSTALLINE BASE.
Claim 2
Dependent Claim
36 words
A STRONG POLYOLEFIN ARTICLE RESISTANT TO ENVIRONMENTAL STRESS CRACKING COMPRISING A BASE OF CRYSTALLINE POLYOLEFIN AND A LAYER OF AMORPHOUS POLYOLEFIN INTEGRALLY BONDED TO SAID BASE, SAID AMORPHOUS LAYER PREVENTING ACCESS TO THE UNDERLYING CRYSTALLINE BASE.
References Cited (Backward Citations)
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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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |