US2592081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making containers
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1949-03-26
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Granted: 1952-04-08
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Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:42
CPC Classifications
B; B31; B31B; B31B50/00; B31B70/00; B31B70/74; B31B70/79; B31B2105/00; B31B2120/00; B31B2120/40; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/917; Y10S493/922; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/249991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A METHOD OF MAKING A BAG, THE STEPS OF FORMING A FLEXIBLE SHEET MATERIAL INTO A BAG OF THE DESIRED SHAPE; SPRAYING A RUBBER LATEX-GAS MIXTURE ONTO THE INNER WALLS OF SAID PREFORMED BAG WHEREBY A LAYER OF RUBBER FOAM IS FORMED ON SAID WALLS; PLACING AN INNER LINING OF FLEXIBLE SHEET MATERIAL ONTO SAID FOAM LAYER TO FORM A DOUBLE WALL BAG; AND APPLYING HEAT TO BOTH THE INNER AND OUTER WALLS OF SAID BAG ASSEMBLY WHEREBY SAID RUBBER FOAM IS CURED INTO A SPONGE MATERIAL AND THE INNER AND OUTER SHEET LAYERS ARE INTEGRALLY UNITED WITH SAID SPONGE.
Claim 2
Dependent Claim
101 words
IN A METHOD OF MAKING A BAG, THE STEPS OF FORMING A FLEXIBLE SHEET MATERIAL INTO A BAG OF THE DESIRED SHAPE; SPRAYING A RUBBER LATEX-GAS MIXTURE ONTO THE INNER WALLS OF SAID PREFORMED BAG WHEREBY A LAYER OF RUBBER FOAM IS FORMED ON SAID WALLS; PLACING AN INNER LINING OF FLEXIBLE SHEET MATERIAL ONTO SAID FOAM LAYER TO FORM A DOUBLE WALL BAG; AND APPLYING HEAT TO BOTH THE INNER AND OUTER WALLS OF SAID BAG ASSEMBLY WHEREBY SAID RUBBER FOAM IS CURED INTO A SPONGE MATERIAL AND THE INNER AND OUTER SHEET LAYERS ARE INTEGRALLY UNITED WITH SAID SPONGE.
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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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |