US4684553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent plastic can
Assignee: Ajinomoto Co Inc
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Filing: 1985-12-30
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Granted: 1987-08-04
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Expires: 2005-12-30
Abstract
Abstract A transparent plastic can which comprises a transparent body formed of a laminated plastic structure, the inner surface of which is coated with a thin layer of silicon oxide.
Inventors
- 👤 Hitoshi Sasaki
- 👤 Shoji Igota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:58
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B29; B29D; B29D22/00; B29D22/003; B31; B31C; B31C3/00; B32B27/06; B32B27/08; B32B27/36; B65; B65D; B65D3/00; B65D3/22; B65D81/00; B65D81/34; B65D81/3446; B65D81/3461; C; C23; C23C; C23C14/00; C23C14/06; C23C14/10; B29C; B29C65/00; B29C65/02; B29C65/10; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/133; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4329; B29C66/49; B29C66/70; B29C66/72; B29C66/723; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83431; B29C66/83433; B32B2255/00; B32B2255/20; B32B2307/00; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/514; B32B2307/518; B32B2323/00; B32B2323/10; B32B2439/00; B32B2439/40; B32B2439/66; B32B2439/70; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31645; Y10T428/31652; Y10T428/31667; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A transparent retortable container capable of preserving foods for a long period of time, which comprises: a cylindrical body consisting of an inner cylindrical member which serves as the content-protecting layer and an outer coated plastic layer which supports the shape of said container, said inner cylindrical member being constructed of a laminated film consisting of at least three layers of a polyolefin layer, a polyester layer having silicon oxide deposited thereon and a plastic layer, the deposited silicon oxide layer being in contact with the polyolefin layer, said cylindrical body being formed by winding said laminated film around a mandrel, with said polyolefin layer facing inside and with one edge of said laminated film outwardly folded back so that the plastic layer comes into contact and bonds with itself, and joining one edge of the film to said folded edge by overlapping said edge over the folded edge and bonding the overlapped portion.
Claim 2
Dependent Claim
154 words
A transparent retortable container capable of preserving foods for a long period of time, which comprises: a cylindrical body consisting of an inner cylindrical member which serves as the content-protecting layer and an outer coated plastic layer which supports the shape of said container, said inner cylindrical member being constructed of a laminated film consisting of at least three layers of a polyolefin layer, a polyester layer having silicon oxide deposited thereon and a plastic layer, the deposited silicon oxide layer being in contact with the polyolefin layer, said cylindrical body being formed by winding said laminated film around a mandrel, with said polyolefin layer facing inside and with one edge of said laminated film outwardly folded back so that the plastic layer comes into contact and bonds with itself, and joining one edge of the film to said folded edge by overlapping said edge over the folded edge and bonding the overlapped portion.
Claim 3
Dependent Claim
21 words
The transparent plastic container of claim 1, wherein said silicon oxide layer is formed by a vacuum evaporation or sputtering operation.
Claim 4
Dependent Claim
20 words
The transparent plastic container of claim 1, wherein said silicon oxide layer is at a thickness of at least 200°.
Claim 5
Dependent Claim
23 words
The transparent plastic container of claim 3, wherein said silicon oxide layer is of a thickness ranging from 500° A to 2000° A.
Claim 6
Dependent Claim
38 words
The transparent plastic container of claim 1, wherein the transparent body of the can renders the contents thereof visible, permits the long term storage of food or beverage and is capable of being heated in a microwave oven.
Claim 7
Dependent Claim
18 words
The transparent plastic container of claim 1, wherein said cylindrical body is enclosed by fusion bonding lids thereto.
Claim 8
Dependent Claim
20 words
The transparent plastic container of claim 6, wherein said lids are metal can lids or injection molded plastic can lids.
Claim 9
Dependent Claim
17 words
The transparent plastic container of claim 1, wherein said silicon oxide is silicon monoxide or silicon dioxide.
References Cited (Backward Citations)
US4478874A
Cited
US4552791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |