US3696987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated cup and method of manufacture
Assignee: WMF Container Corp
•
Filing: 1971-02-26
•
Granted: 1972-10-10
•
Expires: 1991-02-26
Abstract
Abstract An improved package comprising an expanded plastic bead container preferably of styrene and a coating on the container comprising a saran latex material set in direct contact with the expanded plastic bead container. The improved package of the invention provides a vapor and liquid barrier and restricts the entrance of oxygen and other gases to the package as well as providing greater insulation capacity.
Inventors
- 👤 Richard William Schuff
- 👤 Edson Sheppard Harris Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0208; B05; B05D; B05D7/00; B05D7/22; B05D7/227; B65D1/00; B65D1/22; B65D1/26; B65D1/265; B65D21/00; B65D21/02; B65D21/0233; B05D1/00; B05D1/002; B05D2201/00; B05D3/00; B05D3/02; B05D3/0254; B05D3/029; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00555; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/0062; B65D2543/00629; B65D2543/00648; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/00731; B65D2543/00787; B65D2543/00796; Y; Y10; Y10S; Y10S220/00; Y10S220/12; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24521; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
18 words
An improved package according to claim 1 wherein said expanded plastic container is formed of expanded polystyrene beads.
Claim 2
Dependent Claim
19 words
An improved package according to claim 1 wherein said saran latex material comprises a high vinylidene chloride content saran.
Claim 3
Dependent Claim
14 words
An improved package according to claim 3 wherein said coating comprises a surfactant material.
Claim 4
Dependent Claim
12 words
An improved package according to claim 4 wherein said surfactant is non-ionic.
Claim 5
Dependent Claim
25 words
An improved package according to claim 4 wherein said surfactant comprises member selected from the group of a homologous series of nonyl phenoxypoly (ethyleneoxy) ethanols.
Claim 6
Dependent Claim
15 words
An improved package according to claim 4 wherein said coating further comprises an anti-blocking material.
Claim 7
Dependent Claim
15 words
An improved package according to claim 5 wherein said coating further comprises a microcrystalline wax.
Claim 8
Dependent Claim
81 words
An improved package comprising (a) an expanded polystyrene bead container; and (b) a coating on said container set in direct contact with said expanded polystyrene bead material, said coating comprising a saran latex material having a high vinylidene chloride content, a surfactant comprising a member selected from the group of a material of the homologous series of nonyl phenoxypoly (ethyleneoxy) ethanols and a microcrystalline wax said latex comprising from about 80 percent to about 95 percent by weight of said coating.
Claim 9
Independent Claim
36 words
The method of coating an expanded plastic container comprising: a. applying a flowable coating material to the interior of said container; and, b. revolving said container around a central axis thereof to evenly spread said coating.
Claim 10
Dependent Claim
24 words
The method according to claim 10 further comprising the step of drying said coating in a microwave oven following the rotation of said container.
Claim 11
Dependent Claim
22 words
The method according to claim 10 wherein the speed of rotation is iN the range of 2,000 to 3,000 revolutions per minute.
References Cited (Backward Citations)
US3049277A
Cited
US3328196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |