US4192904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular packaging material
Assignee: Hoechst AG
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Filing: 1978-01-26
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Granted: 1980-03-11
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Expires: 1998-01-26
Abstract
Abstract Disclosed is a packaging material suitable for manufacturing synthetic sausage casings, comprised of a cellulose hydrate base layer and a layer of vinylidene chloride containing copolymer on the base layer, as well as several methods for preparing the packaging material.
Inventors
- 👤 Gunter Gerigk
- 👤 Wolfgang Klendauer
- 👤 Horst Pietruck
- 👤 Klaus-Dieter Hammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/048; C08J2301/00; C08J2301/06; C08J2427/00; Y; Y10; Y10S; Y10S206/00; Y10S206/802; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324; Y10T428/1334; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A tube based on regenerated cellulose containing a portion of water and plasticizer and having on its surface a coating composed of a mixture of a first and a second copolymer in a ratio of 1:1 to 4:1, the first copolymer consisting of 90 percent by weight of vinylidene chloride, 1 percent by weight of acrylic acid, and 9 percent by weight of acrylic acid methyl ester, and the second copolymer consisting of 85 percent by weight of vinylidene chloride, 2 percent by weight of acrylic acid, 6 percent by weight of acrylic acid methyl ester, and 7 percent by weight of acrylic acid butyl ester.
Claim 2
Dependent Claim
106 words
A tube based on regenerated cellulose containing a portion of water and plasticizer and having on its surface a coating composed of a mixture of a first and a second copolymer in a ratio of 1:1 to 4:1, the first copolymer consisting of 90 percent by weight of vinylidene chloride, 1 percent by weight of acrylic acid, and 9 percent by weight of acrylic acid methyl ester, and the second copolymer consisting of 85 percent by weight of vinylidene chloride, 2 percent by weight of acrylic acid, 6 percent by weight of acrylic acid methyl ester, and 7 percent by weight of acrylic acid butyl ester.
Claim 3
Dependent Claim
17 words
The tube as defined by claim 1, wherein the mixture is defined by a ratio of 1:1.
Claim 4
Dependent Claim
17 words
The tube as defined by claim 1, wherein the mixture is defined by a ratio of 4:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |