Patent US3301935A successfully refreshed from Google Patents.
US3301935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the forming of shaped articles of thermoplastic foam material
Assignee: Continental Can Co Inc
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Filing: 1962-09-28
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Granted: 1967-01-31
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Stoeckhert Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:55
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5618; C; C08; C08J; C08J9/00; C08J9/36; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS OF FORMING A ONE-PIECE HOLLOW BODY FROM A BODY OF CELLULAR-THERMOPLASTIC FOAM MATERIAL WHICH COMPRISES SUBJECTING AT LEAST ONE SURFACE OF SAID BODY OF FOAM MATERIAL TO A FLUID-STREAM OF SOFTENING AGENT FROM A BLOWING JET; CONTINUING SAID STREAM AGAINST THE SURFACE OF THE FOAM MATERIAL UNTIL THE CELLS THEREOF SHRINK TO FORM A HOLLOW; SAID HOLLOW CHARACTERIZED AS HAVING A NON-POROUS SKIN-LIKE SURFACE AND SAID SOFTENING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF STEAM, HOT GASES AND VAPORS OF AN ORGANIC SOLVENT.
Claim 2
Dependent Claim
86 words
A PROCESS OF FORMING A ONE-PIECE HOLLOW BODY FROM A BODY OF CELLULAR-THERMOPLASTIC FOAM MATERIAL WHICH COMPRISES SUBJECTING AT LEAST ONE SURFACE OF SAID BODY OF FOAM MATERIAL TO A FLUID-STREAM OF SOFTENING AGENT FROM A BLOWING JET; CONTINUING SAID STREAM AGAINST THE SURFACE OF THE FOAM MATERIAL UNTIL THE CELLS THEREOF SHRINK TO FORM A HOLLOW; SAID HOLLOW CHARACTERIZED AS HAVING A NON-POROUS SKIN-LIKE SURFACE AND SAID SOFTENING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF STEAM, HOT GASES AND VAPORS OF AN ORGANIC SOLVENT.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |