Patent US3296046A successfully refreshed from Google Patents.
US3296046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of tack sealing biaxially oriented polypropylene film
Assignee: Union Carbide Corp
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Filing: 1963-04-22
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Granted: 1967-01-03
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Hillard W Pouncy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:15
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J7/00; C08J7/12; C08J7/123; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
THE METHOD OF TACK SEALING BIAXIALY ORIENTED POLYPROPYLENE FILM WHICH COMPRISES CONDITIONING THE SURFACE OF SAID FILM BY EXPOSURE TO FLAME UNTIL SIAD SURFACE CAN BE WET BY A LIQUID HAVING A SURFACE TENSION OF FROM 43 TO 70 DYNES/CM., PLACING TWO SUCH FILMS IN INTIMATE CONTACT SUCH THAT AT LEAST ONE CONTACT SURFACE IS A CONDITIONED SURFACE, AND HEATING THE CONTACTED SURFACES TO AN INTERFACE TEMPERATURE OF FROM 235*F. TO 255*F. INCLUSIVE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |