US3204825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply liner bag
Assignee: Union Carbide Corp
•
Filing: 1961-10-23
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Granted: 1965-09-07
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 William F Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:23
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/02; B65D77/00; B65D77/04; B65D77/06; B65D77/062; B65D77/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A FLEXIBLE, LEAKPROOF, COLLAPSIBLE MULTI-PLY LINER BAG FOR FLOWABLE FOOD PRODUCTS COMPRISING AN INNTER PLY OF FLEXIBLE POLYOLEFIN FILM CHARACTERIZED BY BEING RESISTANT TO ENVIRONMENTAL STRESS CORROSION AND FLEX FATIGUE AND BY HAVING AN ESSENTIALLY STERILE INTERIOR SURFACE, SAID INNER POLYOLEFIN FILM PLY BEING A HIGH MOLECULAR WEIGHT FILMFORMING POLYOLEFIN RESIN HAVING AN INTRINSIC VISCOSITY OF AT LEAST ABOUT 1.0; AND AN OUTER PLY OF FLEXIBLE POLYOLEFIN FILM CHARACTERIZED BY BEING RESISTANT TO PUNCTURE AND ABRASION, SAID OUTER POLYOLEFIN FILM PLY BEING A FILMFORMING POLYOLEFIN RESIN HAVING AN INTRINSIC VISCOSITYY OF NOT LESS THAN ABOUT 0.6, SAID INNTER AND OUTER PLIES BEING SEPERATE, SELF-SUPPORTING, NON-CONJOINT FILMS.
Claim 2
Dependent Claim
106 words
A FLEXIBLE, LEAKPROOF, COLLAPSIBLE MULTI-PLY LINER BAG FOR FLOWABLE FOOD PRODUCTS COMPRISING AN INNTER PLY OF FLEXIBLE POLYOLEFIN FILM CHARACTERIZED BY BEING RESISTANT TO ENVIRONMENTAL STRESS CORROSION AND FLEX FATIGUE AND BY HAVING AN ESSENTIALLY STERILE INTERIOR SURFACE, SAID INNER POLYOLEFIN FILM PLY BEING A HIGH MOLECULAR WEIGHT FILMFORMING POLYOLEFIN RESIN HAVING AN INTRINSIC VISCOSITY OF AT LEAST ABOUT 1.0; AND AN OUTER PLY OF FLEXIBLE POLYOLEFIN FILM CHARACTERIZED BY BEING RESISTANT TO PUNCTURE AND ABRASION, SAID OUTER POLYOLEFIN FILM PLY BEING A FILMFORMING POLYOLEFIN RESIN HAVING AN INTRINSIC VISCOSITYY OF NOT LESS THAN ABOUT 0.6, SAID INNTER AND OUTER PLIES BEING SEPERATE, SELF-SUPPORTING, NON-CONJOINT FILMS.
References Cited (Backward Citations)
US2664378A
Cited
US3055784A
Cited
US3007608A
Cited
US2898027A
Cited
US2932323A
Cited
US2956723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |