Patent US5497782A successfully refreshed from Google Patents.
Patent US3204825A successfully refreshed from Google Patents.
US3204825A
Expired / Lapsed
US
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Multi-ply liner bag
Assignee: Union Carbide Corp
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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 15:48
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)
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Cited
US3055784A
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US3007608A
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US2898027A
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US2932323A
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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) | 1968-09-06 | 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 |