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US3214320A Expired / Lapsed US ⏱️ 0.0 years remaining

Non-tacky tear resistant material

Assignee: PRESCIENCIA Ltd
•
Filing: 1961-09-11
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Granted: 1965-10-26
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Expires: 1981-09-11
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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.

References Cited (Backward Citations)

US2281635A Cited
US2650184A Cited
US2886481A Cited
GB848917A Cited
US2851389A Cited
US3017302A Cited
US2983704A Cited

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

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