US3235529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free flowing polystyrene powders containing 10-40% plasticizer
Assignee: Dow Chemical Co
•
Filing: 1960-09-06
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Granted: 1966-02-15
•
Expires: 1980-09-06
Abstract
No abstract record available.
Inventors
- 👤 Floyd B Nagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A FINELY DIVIDED COMPOSITION OF MATTER COMPRISING A SUBSTANTIALLY UNIFORM ADMIXTURE OF FROM ABOUT 10 PERCENT TO ABOUT 40 PERCENT BY WEIGHT OF WHITE MINERAL OIL AND FROM 60 PERCENT TO ABOUT 90 PERCENT BY WEIGHT OF FINELY DIVIDED PARTICLES OF POLYSTYRENE OF SIZES BETWEEN 0.25 AND 5 MICRONS AND HAVING A BULK DENSITY OF LESS THAN ABOUT 0.5 GM./CC.
Claim 2
Dependent Claim
60 words
A FINELY DIVIDED COMPOSITION OF MATTER COMPRISING A SUBSTANTIALLY UNIFORM ADMIXTURE OF FROM ABOUT 10 PERCENT TO ABOUT 40 PERCENT BY WEIGHT OF WHITE MINERAL OIL AND FROM 60 PERCENT TO ABOUT 90 PERCENT BY WEIGHT OF FINELY DIVIDED PARTICLES OF POLYSTYRENE OF SIZES BETWEEN 0.25 AND 5 MICRONS AND HAVING A BULK DENSITY OF LESS THAN ABOUT 0.5 GM./CC.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |