US4933217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for external liquid smoke treatment of cellulosic food casings and casings produced thereby
Assignee: Viskase Corp
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Filing: 1986-10-24
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Granted: 1990-06-12
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Expires: 2006-10-24
Abstract
Abstract An aqueous natural liquid smoke impregnated food casing suitable for imparting smoke color to food products processed therein and method for making the same using an aqueous natural liquid smoke which is neutralized to a pH between about 5-9 to precipitate tar materials which are removed prior to impregnation.
Inventors
- 👤 Herman S. Chiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:11
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A casing for meat products comprising a tube, impregnated with a colorant, said colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a neutralizing agent consisting essentially of water soluble alkaline neutralizing compound, to a pH within the range of from about 5 to about 9 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 2
Dependent Claim
65 words
A casing for meat products comprising a tube, impregnated with a colorant, said colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a neutralizing agent consisting essentially of water soluble alkaline neutralizing compound, to a pH within the range of from about 5 to about 9 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 3
Dependent Claim
15 words
The casing of claim 1 wherein said casing is a tube and comprises regenerated cellulose.
Claim 4
Dependent Claim
16 words
The casing of claim 1, wherein said colorant is derived from commercially available natural liquid smokes.
Claim 5
Dependent Claim
14 words
The casing of claim 1, wherein said colorant further comprises an FDA approved colorant.
Claim 6
Dependent Claim
26 words
A food product comprising a meat product the surface of which is colored by a neutralized natural liquid smoke colorant from a casing of claim 1.
Claim 7
Dependent Claim
13 words
The food product of claim 5 wherein said food product comprises a frankfurter.
Claim 8
Independent Claim
87 words
The method of forming a regenerated cellulose casing which is capable of imparting a smoke color to a meat product cooked therein comprising providing a regenerated cellulose food casing and impregnating said casing with a neutralized natural smoke colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a neutralizing agent consisting essentially of water soluble alkaline neutralizing compound, to a pH of from about 5 to about 9 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 9
Independent Claim
87 words
The method of forming a regenerated cellulose casing which is capable of imparting a smoke color to a meat product cooked therein comprising providing a regenerated cellulose food casing and impregnating said casing with a neutralized natural smoke colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a neutralizing agent consisting essentially of water soluble alkaline neutralizing compound, to a pH of from about 5 to about 9 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 10
Dependent Claim
20 words
The method of claim 7 in which the colorant has been applied to the outside of the casing by dipping.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |