Patent US3224896A successfully refreshed from Google Patents.
US3224896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sealable polyolefin packaging film
Assignee: Avisun Corp
•
Filing: 1963-01-08
•
Granted: 1965-12-21
•
Expires: 1983-01-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Quinn
- 👤 Barkis Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/052; C08J2323/00; C08J2323/02; C08J2425/00; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A HEAT-SEALABLE PACKAGING FILM COMPRISING A POLYOLEFIN BASE FILM SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE WHICH HAS BEEN SUBJECTED TO AN ADHESION-PROMOTING PRETREATMENT, AND A HEAT-SEALABLE COATING ON AT LEAST ONE SIDE OF SAID BASE FILM CONTAINING AT LEAST A MAJOR PROPORTION OF A RESINOUS COPOLYER OF FROM 80-92% BY WEIGHT OF STYRENE AND FROM 20-8% BY WEIGHT OF BUTADIENE-1,3 PREPARED IN THE PRESENCE OF FROM 0.2 PART TO ABOUT 3.0 PARTS PER 100 PARTS OF MONOMERS OF A MERCAPTAN MODIFIER CONTAINING AT LEAST 6 CARBON ATOMS.
Claim 2
Dependent Claim
90 words
A HEAT-SEALABLE PACKAGING FILM COMPRISING A POLYOLEFIN BASE FILM SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE WHICH HAS BEEN SUBJECTED TO AN ADHESION-PROMOTING PRETREATMENT, AND A HEAT-SEALABLE COATING ON AT LEAST ONE SIDE OF SAID BASE FILM CONTAINING AT LEAST A MAJOR PROPORTION OF A RESINOUS COPOLYER OF FROM 80-92% BY WEIGHT OF STYRENE AND FROM 20-8% BY WEIGHT OF BUTADIENE-1,3 PREPARED IN THE PRESENCE OF FROM 0.2 PART TO ABOUT 3.0 PARTS PER 100 PARTS OF MONOMERS OF A MERCAPTAN MODIFIER CONTAINING AT LEAST 6 CARBON ATOMS.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |