Patent US4081580A successfully refreshed from Google Patents.
US4081580A
Expired / Lapsed
US
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Paper wrapper for wrapping refrigerated meat
Assignee: Individual
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Filing: 1975-08-25
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Granted: 1978-03-28
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Expires: 1995-08-25
Abstract
Abstract A paper wrapper is provided for wrapping refrigerated meats, which is characterized by a paper board for prevention of strength loss due to moisture pick-up during usage, and also for prevention of drying for good preservation and for easy separation of the meat from the box.
Inventors
- 👤 Eiji Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; Y; Y10; Y10S; Y10S206/00; Y10S206/819; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/24; Y10T428/2419; Y10T428/24273; Y10T428/24298; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24488; Y10T428/24521; Y10T428/24628; Y10T428/24777; Y10T428/26; Y10T428/266; Y10T428/27
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
A paper wrapper for wrapping refrigerated meat comprising single or multi-ply paper board having a thickness of 20/100-80/100 mm, and coated on both sides for imparting water-proofing properties, embossed with rugose patterns having a side length of 1-8 mm, with a depth of 40-130 % of the thickness of the paper at intervals of 0.5-8 mm, and at a density of 2-11/cm 2 , having after embossing, a water resistance 30-350 g/m 2 at the rugose surface, an air permeability of 50-200 seconds/100 cc and a bursting strength of 3.5-14 kg/cm 2 , and having fine cracking in the water-resistant coating at the rugose surface.
Claim 2
Dependent Claim
105 words
A paper wrapper for wrapping refrigerated meat comprising single or multi-ply paper board having a thickness of 20/100-80/100 mm, and coated on both sides for imparting water-proofing properties, embossed with rugose patterns having a side length of 1-8 mm, with a depth of 40-130 % of the thickness of the paper at intervals of 0.5-8 mm, and at a density of 2-11/cm 2 , having after embossing, a water resistance 30-350 g/m 2 at the rugose surface, an air permeability of 50-200 seconds/100 cc and a bursting strength of 3.5-14 kg/cm 2 , and having fine cracking in the water-resistant coating at the rugose surface.
Claim 3
Dependent Claim
26 words
A paper wrapper according to claim 1, wherein said rugose patterns are in the form of semi-elliptic recesses said recesses being arranged in a zig-zag manner.
Claim 4
Dependent Claim
26 words
A paper wrapper according to claim 1, wherein said rugose patterns are in the form of spherical recesses, said recesses being arranged in a zig-zag manner.
References Cited (Backward Citations)
GB469145A
Cited
US2912152A
Cited
US3003884A
Cited
US3292619A
Cited
US3337114A
Cited
US3659772A
Cited
US3902650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |