US4311250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container having internal wall surfaces modified to reduce carbonation loss
Assignee: Continental Group Inc
•
Filing: 1980-05-12
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Granted: 1982-01-19
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Expires: 2000-05-12
Abstract
Abstract A container is provided for liquid carbonated beverages having applied to the internal wall surfaces a layer of an inert, water insoluble polymeric material comprised of a predominant amount of hydrophilic groups, the presence of such hydrophilic groups in the polymer being effective to reduce carbon dioxide bubble nucleation and accompanying carbonation loss from carbonated beverages packaged therein.
Inventors
- 👤 Abraham Ravve
- 👤 Paxton M. Wilt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:47
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/22; B65; B65D; B65D25/00; B65D25/14; C; C09; C09D; C09D129/00; C09D129/02; C09D129/04; C09D133/00; C09D133/02; C09D133/04; C09D133/14; C09D151/00; C09D151/003; Y; Y10; Y10S; Y10S220/00; Y10S220/906; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1379
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
94 words
A container for liquid carbonated bverages comprising a hollow body having applied to the internal liquid contacting internal wall surfaces thereof a layer of an inert, water insoluble organic polymeric material wherein at least about 75% by weight of the layer being formed from a monomer containing hydrophilic chemical groups, the layer covering at least a major portion of the internal liquid contacting wall surfaces and present in an amount both effective to reduce carbon dioxide bubble nucleation on the internal walls of the container and accompanying carbonation loss from the beverage packaged therein.
Claim 2
Dependent Claim
94 words
A container for liquid carbonated bverages comprising a hollow body having applied to the internal liquid contacting internal wall surfaces thereof a layer of an inert, water insoluble organic polymeric material wherein at least about 75% by weight of the layer being formed from a monomer containing hydrophilic chemical groups, the layer covering at least a major portion of the internal liquid contacting wall surfaces and present in an amount both effective to reduce carbon dioxide bubble nucleation on the internal walls of the container and accompanying carbonation loss from the beverage packaged therein.
Claim 3
Dependent Claim
13 words
The container of claim 1 wherein the container is formed from a metal.
Claim 4
Dependent Claim
12 words
The container of claim 2 wherein the container is formed from aluminum.
Claim 5
Dependent Claim
12 words
The container of claim 1 wherein the container is formed from steel.
Claim 6
Dependent Claim
13 words
The container of claim 1 wherein the container is formed from polyethylene terephthalate.
Claim 7
Dependent Claim
22 words
The container of claim 1 wherein the layer is formed of a copolymer of a hydrophilic containing monomer and a second monomer.
Claim 8
Dependent Claim
25 words
The container of claim 1 wherein the layer is formed of a hydrophobic polymer modified by graft polymerization with the monomer containing hydrophilic chemical groups.
Claim 9
Dependent Claim
12 words
The container of claim 7 wherein the hydrophobic polymer is polyvinyl chloride.
Claim 10
Dependent Claim
16 words
The container of claim 7 wherein the hydrophobic polymer is a vinyl chloride/vinyl acetate/vinyl alcohol copolymer.
Claim 11
Dependent Claim
31 words
The container of claim 7 wherein the film weight of the graft polymerized hydrophilic monomer ranges from 0.10 to 2.0 milligrams of monomer grafted per square inch of container wall surface.
Claim 12
Dependent Claim
13 words
The container of claim 10 wherein the polyvinyl alcohol is insolubilized with glyoxal.
Claim 13
Dependent Claim
31 words
The container of claim 7 wherein the film weight of the graft polymerized hydrophilic monomer ranges from 0.75 to 2.0 milligrams of monomer grafted per square inch of container wall surface.
Claim 14
Dependent Claim
12 words
The container of claim 1 wherein the hydrophilic monomer is acrylic acid.
Claim 15
Dependent Claim
12 words
The container of claim 1 wherein the hydrophilic monomer is hydroxyethyl acrylate.
Claim 16
Dependent Claim
18 words
The container of claim 1 wherein the layer is a water soluble polymer insolubilized with a cross-linking agent.
Claim 17
Dependent Claim
11 words
The container of claim 15 wherein the polymer is polyvinyl alcohol.
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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) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |