US5123554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retortable plastic containers
Assignee: Abbott Laboratories
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Filing: 1991-06-13
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Granted: 1992-06-23
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Expires: 2011-06-13
Abstract
Abstract A multi-layer co-extrusion blow molded plastic container adapted to be filled with a heat-sensitive nutrient and then retorted at relatively high temperatures to sterilize the contents thereof, the contents being agitated by rotating the container while it is being retorted and certain of the side walls being ribbed to both increase the surface area of the container and thus the heat transfer properties thereof and to aid in agitation of the contents whereby to minimize the time period the heat-sensitive contents must be exposed to such high temperatures for sterilization thereof, and the method of providing such a sterile container of heat-sensitive nutrient.
Inventors
- 👤 Russell A. Arvidson
- 👤 Thomas A. Vandewalle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:13
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0207; B65D1/0215; B65D23/00; B65D23/003; B65D2501/00; B65D2501/0009; B65D2501/0018; B65D2501/0036
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
A plastic container for a heat-sensitive nutritional product, comprising a retortable multilayer plastic bottle, said bottle being generally rectangular in configuration and having a front wall, a rear wall, a pair of side walls and a bottom wall the front and side walls only are characterized by a plurality of horizontally extending rib formations which extend partially thereacross, the thickness of the walls in said rib formations being substantially constant, said front wall being joined to said side walls by corners which are free of said rib formations, and hanger means on said bottom wall.
Claim 2
Dependent Claim
95 words
A plastic container for a heat-sensitive nutritional product, comprising a retortable multilayer plastic bottle, said bottle being generally rectangular in configuration and having a front wall, a rear wall, a pair of side walls and a bottom wall the front and side walls only are characterized by a plurality of horizontally extending rib formations which extend partially thereacross, the thickness of the walls in said rib formations being substantially constant, said front wall being joined to said side walls by corners which are free of said rib formations, and hanger means on said bottom wall.
Claim 3
Dependent Claim
19 words
A plastic container as recited in claim 1 wherein said hanger means is removably attachable to said bottom wall.
Claim 4
Dependent Claim
72 words
A plastic container as recited in claim 1 wherein the container comprises six layers which comprise from the exterior of the container to the interior of the container; (a) a layer of food-grade polypropylene, (b) a layer of regrind material, (c) a layer of a high temperature adhesive, (d) a layer comprising an oxygen barrier of ethyl-vinyl-alcohol, (e) a layer of a high temperature adhesive, and (f) a layer of food-grade polyethylene.
Claim 5
Dependent Claim
29 words
A plastic container as recited in claim 1 wherein said front, back and side walls have upper portions which converge to define inclined portions communicating with a neck portion.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |