US3187982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming coated uniaxially oriented films and the product formed thereby
Assignee: Union Carbide Corp
•
Filing: 1960-07-21
•
Granted: 1965-06-08
•
Expires: 1980-07-21
Abstract
No abstract record available.
Inventors
- 👤 William F Underwood
- 👤 George R Cotten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/66; B65D75/68; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/09; B29C48/14; B29C48/147; B29C48/1472; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/32; B29C48/335; B29C48/337; B29C48/338; B29C2791/00; B29C2791/004; B29C2791/007; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A TEAR TAPE FOR PRODUCING A UNIFORM TEAR IN A THERMOPLASTIC PACKAGING FILM COMPRISING A BACKING FILM OF HIGHLY UNIAXIALLY ORIENTED CRYSTALLINE POLYOLEFIN FILM STRETCHED AT LEAST 700% IN THE LONGITUDINAL DIRECTION, AND A THERMOPLASTIC COATING BONDED TO A SURFACE OF SAID BACKING FILM AND HEAT SEALED TO SAID THERMOPLASTIC PACKAGING FILM AT A TEMPERATURE LESS THAN THE MELTING POINT OF SAID BACKING FILM, SAID TEAR TYPE BEING CHARACTERIZED IN THAT WHEN A TEAR IS INITIATED WITHIN BOUNDARIES OF SAID BACKING FILM AND IN THE DIRECTION OF ORIENTATION IT WILL UNIFORMLY TEAR ALONG A SUBSTANTIALLY STRAIGHT LINE PARALLEL TO THE DIRECTION OF ORIENTATION.
Claim 2
Dependent Claim
103 words
A TEAR TAPE FOR PRODUCING A UNIFORM TEAR IN A THERMOPLASTIC PACKAGING FILM COMPRISING A BACKING FILM OF HIGHLY UNIAXIALLY ORIENTED CRYSTALLINE POLYOLEFIN FILM STRETCHED AT LEAST 700% IN THE LONGITUDINAL DIRECTION, AND A THERMOPLASTIC COATING BONDED TO A SURFACE OF SAID BACKING FILM AND HEAT SEALED TO SAID THERMOPLASTIC PACKAGING FILM AT A TEMPERATURE LESS THAN THE MELTING POINT OF SAID BACKING FILM, SAID TEAR TYPE BEING CHARACTERIZED IN THAT WHEN A TEAR IS INITIATED WITHIN BOUNDARIES OF SAID BACKING FILM AND IN THE DIRECTION OF ORIENTATION IT WILL UNIFORMLY TEAR ALONG A SUBSTANTIALLY STRAIGHT LINE PARALLEL TO THE DIRECTION OF ORIENTATION.
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |