US3705116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of light building elements
Assignee: Societa Italiana Resine SpA SIR
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Filing: 1970-12-10
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Granted: 1972-12-05
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Expires: 1990-12-10
Abstract
Abstract LIGHTWEIGHT CONCRETE BUILDING ELEMENTS ARE MADE BY A PROCESS IN WHICH THE POLYSTYRENE GRANULES USED ARE ASSOCIATED WITH A BINDER CONTAINING BOTH A POLYEPOXY COMPOUND AND A MONOEPOXY COMPOUND.
Inventors
- 👤 Silvio Vargiu
- 👤 Mario Pitzalis
- 👤 Pierluigi Abruzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:37
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/236; C04; C04B; C04B20/00; C04B20/10; C04B20/1018; C04B20/1029; C04B20/1037; C04B28/00; C04B28/02; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |