US3060138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable polystyrene particles containing isopentane and paraffinic hydrocarbon and process of making same
Assignee: Beazer East Inc
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Filing: 1960-05-19
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Granted: 1962-10-23
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:06
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/16; C08J9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A FOAMABLE POLYSTYRENE PARTICLE CONTAINING SUBSTANTIALLY UNIFROMLY DISTRIBUTED THROUGHOUT ISOPENTANE AND FROM ABOUT .5 TO 2% OF A PARAFFINICHYDROCARBON HAVING BETWEEN 16 TO 46 CARBON ATOMS WHICH STYRENE PARTICLE UPON HEATING WILL EXPAND TO A STRUCTURE OF LESS THAN ONE POUND PER CUBIC FOOT DENSITY HAVING UNIFORMLY SMALL CELLS.
Claim 2
Dependent Claim
49 words
A FOAMABLE POLYSTYRENE PARTICLE CONTAINING SUBSTANTIALLY UNIFROMLY DISTRIBUTED THROUGHOUT ISOPENTANE AND FROM ABOUT .5 TO 2% OF A PARAFFINICHYDROCARBON HAVING BETWEEN 16 TO 46 CARBON ATOMS WHICH STYRENE PARTICLE UPON HEATING WILL EXPAND TO A STRUCTURE OF LESS THAN ONE POUND PER CUBIC FOOT DENSITY HAVING UNIFORMLY SMALL CELLS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |