Patent US2631954A successfully refreshed from Google Patents.
US2631954A
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Polyethylene film and method of preparing same
Assignee: Kendall Co
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Filing: 1946-01-18
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Granted: 1953-03-17
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Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 Willard M Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:34
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
THE METHOD OF PRODUCING A MOLECULARLY ORIENTED FILM OF A SOLID ETHENOID POLYMER SELECTED FROM THE GROUP CONSISTING OF ETHENOID POLYMERS EXHIBITING A CRYSTALLINE STRUCTURE BY X-RAY DIFFRACTION ANALYSIS AND HAVING THE EMPERICAL FORMULA:
Claim 2
Independent Claim
34 words
THE METHOD OF PRODUCING A MOLECULARLY ORIENTED FILM OF A SOLID ETHENOID POLYMER SELECTED FROM THE GROUP CONSISTING OF ETHENOID POLYMERS EXHIBITING A CRYSTALLINE STRUCTURE BY X-RAY DIFFRACTION ANALYSIS AND HAVING THE EMPERICAL FORMULA:
Claim 3
Dependent Claim
18 words
AS A NEW ARTICLE OF MANUFACTURE, A FILM PRODUCED IN ACCORDANCE WITH THE METHOD CLAIMED IN CLIAM 1.
Claim 4
Dependent Claim
32 words
A PRESSURE-SENSITIVE ADHESIVE SHEET COMPRISING A FILM PRODUCED IN ACCORDANCE WITH THE METHOD CLAIMED IN CLAIM 1, AND A COATING OF A PRESSURE-SENSITIVE ADHESIVE MATERIAL AFFIXED TO ONE SURFACE OF SAID FILM.
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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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |