Patent US4408697A successfully refreshed from Google Patents.
US4408697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opening means having cutting guide
Assignee: Tokan Kogyo Co Ltd
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Filing: 1982-06-11
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Granted: 1983-10-11
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Expires: 2002-06-11
Abstract
Abstract A container for holding an article such as food comprises a container main body and a lid. The lid has a laminate structure of an aluminum foil layer exposed upon an outer surface of the lid and a synthetic resin film layer exposed upon an inner surface of the lid. Cutting means is provided for cutting at least part of the lid. The cutting means comprises a pull-tab arranged on the outer surface of the lid, a cutting guide arranged on the inner surface of the lid along at least an outer periphery of a cutting region, and a connecting portion extending through a small hole formed in said lid so as to connect said pull-tab with said cutting guide. The cutting means comprises molded bodies of a synthetic resin which can not be bonded to the aluminum foil layer and which can be bonded to the synthetic resin film layer upon molding process.
Inventors
- 👤 Tsukasa Yoshikawa
- 👤 Masuo Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:47
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011; B65D2517/00; B65D2517/0001; B65D2517/0058; B65D2517/008; B65D2517/0085; B65D2517/0088
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A container for holding an article, comprising: (a) a container main body; (b) a lid covering an opening of said container main body, said lid having a laminate structure of at least two kinds of materials, a first material being exposed upon an outer surface of said lid, and a second material being exposed upon an inner surface of said lid; and (c) cutting means for cutting at least part of said lid so as to form a cutting region, said cutting means comprising a pull-tab arranged on the outer surface of said lid, a cutting guide arranged on the inner surface of said lid along at least an outer periphery of said cutting region, and a connecting portion extending through a small hole formed in said lid so as to connect said pull-tab with said cutting guide, and said cutting means comprising molded bodies of a synthetic resin which can not be bonded to said first material and which can be bonded to said second material upon molding process thereof on said lid.
Claim 2
Dependent Claim
174 words
A container for holding an article, comprising: (a) a container main body; (b) a lid covering an opening of said container main body, said lid having a laminate structure of at least two kinds of materials, a first material being exposed upon an outer surface of said lid, and a second material being exposed upon an inner surface of said lid; and (c) cutting means for cutting at least part of said lid so as to form a cutting region, said cutting means comprising a pull-tab arranged on the outer surface of said lid, a cutting guide arranged on the inner surface of said lid along at least an outer periphery of said cutting region, and a connecting portion extending through a small hole formed in said lid so as to connect said pull-tab with said cutting guide, and said cutting means comprising molded bodies of a synthetic resin which can not be bonded to said first material and which can be bonded to said second material upon molding process thereof on said lid.
Claim 3
Dependent Claim
29 words
A container according to claim 1, wherein said container main body comprises a laminate structure of sheets or films of synthetic resins, paper, aluminum foil or a combination thereof.
Claim 4
Dependent Claim
31 words
A container according to claim 1, wherein said lid comprises a laminate structure of an aluminum foil layer as said first material and a synthetic resin film as said second material.
Claim 5
Dependent Claim
19 words
A container according to claim 3, wherein a coating is formed on a surface of said aluminum foil film.
Claim 6
Dependent Claim
77 words
A container according to claim 1, wherein said cutting region comprises a first region of a small area extending from substantially the center of said lid, and a second region of substantially the entire area of said lid surrounding said first region; and said cutting guide comprises a rib bonded to the inner surface of said lid, said rib surrounding an outer periphery of said first region and extending along an outer periphery of said second region.
Claim 7
Dependent Claim
29 words
A container according to claim 5, wherein said pull-tab is connected through said connecting portion to an end of said first region at substantially the center of said lid.
Claim 8
Dependent Claim
14 words
A container according to claim 1, wherein said pull-tab is of a ring shape.
Claim 9
Dependent Claim
17 words
A container according to claim 1, wherein said cutting means comprises a molded body of polyethylene terephthalate.
Claim 10
Dependent Claim
23 words
A container according to claim 1, wherein said container main body and said lid are sealed by heat sealing to complete said container.
References Cited (Backward Citations)
US2149308A
Cited
US4301939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |