Patent US3214320A successfully refreshed from Google Patents.
US3214320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-tacky tear resistant material
Assignee: PRESCIENCIA Ltd
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Filing: 1961-09-11
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Granted: 1965-10-26
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Risto P Lappala
- 👤 Johan A Bjorksten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:35
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/202; B29C70/68; B29C70/685; B29C70/687; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347; Y10T428/24942; Y10T428/2495; Y10T428/24992; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
A LAMINATED FLEXIBLE FOLDABLE FILM ARTICLE COMPRISING A PLURALITY OF CONTIGUOUSLY ADHERENT POLYMERIC FILM LAMINAE AND COMPRISING THE COMBINATION OF A FIRST OUTER UPPER FILM LAMINA, A SECOND OUTER LOWER FILM LAMINA AND A PLURALITY OF STRANDS OF FIBROUS MATERIAL DISPOSED BETWEEN SAID UPPER AND LOWER LAMINAE AND DIVIDED INTO AT LEAST TWO GROUPS, SUBSTANTIALLY ALL OF THE STRANDS IN ONE GROUP BEING PARALLEL TO ONE ANOTHER AND EXTENDING SUBSTANTIALLY FROM ONE EDGE OF THE ARTICLE TO ANOTHER EDGE OF THE ARTICLE, SUBSTANTIALLY ALL OF THE STRANDS IN THE SECOND GROUP BEING PARALLEL TO ONE ANOTHER AND EXTENDING AT AN ANGLE TO THE STRANDS OF THE FIRST GROUP AND EXTENDING SUBSTANTIALLY FROM ONE EDGE OF THE ARTICLE TO ANOTHER EDGE OF THE ARTICLE, ALL STRANDS IN EACH GROUP BEING NON-INTERWOVEN WITH STRANDS IN THE OTHER GROUP, ALL OF SAID STRANDS DISPOSED ADJACENT A LAMINAR INTERFACE OF ONE OF SAID LAMINAE, SAID UPPER LAMINA BEING DISSIMILAR TO SAID LOWER LAMINA AND HAVING A LOWER RUPTURE AND BURSTING STRENGTH THAN SAID LOWER LAMINA, THE DISPOSITION OF SAID STRANDS AT SAID INTERFACE ENABLING SAID STRANDS TO BE TORN FROM SAID ARTICLE THROUGH SAID UPPER LAMINA BY RUPTURE OF SAID UPER LAMINA IN THE LIMITED AREAS ADJACENT THE STRANDS WITHOUT DESTROYING THE CONTINUITY OF THE LAMINATED ARTICLE.
Claim 2
Dependent Claim
213 words
A LAMINATED FLEXIBLE FOLDABLE FILM ARTICLE COMPRISING A PLURALITY OF CONTIGUOUSLY ADHERENT POLYMERIC FILM LAMINAE AND COMPRISING THE COMBINATION OF A FIRST OUTER UPPER FILM LAMINA, A SECOND OUTER LOWER FILM LAMINA AND A PLURALITY OF STRANDS OF FIBROUS MATERIAL DISPOSED BETWEEN SAID UPPER AND LOWER LAMINAE AND DIVIDED INTO AT LEAST TWO GROUPS, SUBSTANTIALLY ALL OF THE STRANDS IN ONE GROUP BEING PARALLEL TO ONE ANOTHER AND EXTENDING SUBSTANTIALLY FROM ONE EDGE OF THE ARTICLE TO ANOTHER EDGE OF THE ARTICLE, SUBSTANTIALLY ALL OF THE STRANDS IN THE SECOND GROUP BEING PARALLEL TO ONE ANOTHER AND EXTENDING AT AN ANGLE TO THE STRANDS OF THE FIRST GROUP AND EXTENDING SUBSTANTIALLY FROM ONE EDGE OF THE ARTICLE TO ANOTHER EDGE OF THE ARTICLE, ALL STRANDS IN EACH GROUP BEING NON-INTERWOVEN WITH STRANDS IN THE OTHER GROUP, ALL OF SAID STRANDS DISPOSED ADJACENT A LAMINAR INTERFACE OF ONE OF SAID LAMINAE, SAID UPPER LAMINA BEING DISSIMILAR TO SAID LOWER LAMINA AND HAVING A LOWER RUPTURE AND BURSTING STRENGTH THAN SAID LOWER LAMINA, THE DISPOSITION OF SAID STRANDS AT SAID INTERFACE ENABLING SAID STRANDS TO BE TORN FROM SAID ARTICLE THROUGH SAID UPPER LAMINA BY RUPTURE OF SAID UPER LAMINA IN THE LIMITED AREAS ADJACENT THE STRANDS WITHOUT DESTROYING THE CONTINUITY OF THE LAMINATED ARTICLE.
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |