US3255286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of shaped articles from cellular thermoplastic materials
Assignee: LES PRODUITS SYNTHETIQUES APPLIQUES
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Filing: 1962-10-16
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Granted: 1966-06-07
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Luc-Belmont Stephane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:12
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/232; B; B29; B29C; B29C44/00; B29C44/02; B29C44/10; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C65/00; B29C65/02; B29C66/00; B29C66/70; B29C66/71; B29C67/00; B29C67/20; C08J9/16; C08J9/20; B29C44/3415; B29C44/3426; B29C65/14; B29C65/1403; B29C65/1412; Y; Y10; Y10S; Y10S264/00; Y10S264/07; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE METHOD OF PRODUCING SHAPED CELLULAR ARTICLES FROM ELEMENTS MADE OF CELLULAR POLYSTYRENE WHICH COMPRISES CAUSING DISCRETE PARTICLES OF CELLULAR POLYSTYRENE TO BE EXPANDED IN FREE AIR AND FREED OF RESIDUAL EXPANSION AGENT, AND WELDING SAID PARTICLES TOGETHER BY HEAT-
Claim 2
Independent Claim
40 words
THE METHOD OF PRODUCING SHAPED CELLULAR ARTICLES FROM ELEMENTS MADE OF CELLULAR POLYSTYRENE WHICH COMPRISES CAUSING DISCRETE PARTICLES OF CELLULAR POLYSTYRENE TO BE EXPANDED IN FREE AIR AND FREED OF RESIDUAL EXPANSION AGENT, AND WELDING SAID PARTICLES TOGETHER BY HEAT-
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |