US3257338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete composition comprising cement, primary aggregate, particulate expanded polystyrene and a homogenizing agent
Assignee: Beazer East Inc
•
Filing: 1963-02-20
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Granted: 1966-06-21
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert C Sefton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A CONCRETE MIXTURE COMPRISED OF CEMENT, A PRIMARY AGGREGATE, PARTICULATE EXPANDED STRYRENE POLYMER, AND A HOMOGENIZING AGENT CONSISTING OF THE ALKALI METAL SALT OF CARBOXYMETHYL CELLULOSE, AND THE ALKALI METAL SALT OF THE ALIPHATIC INSOLUBLE PORTION OF THE AROMATIC EXTRACT OF PINEWOOD.
Claim 2
Dependent Claim
42 words
A CONCRETE MIXTURE COMPRISED OF CEMENT, A PRIMARY AGGREGATE, PARTICULATE EXPANDED STRYRENE POLYMER, AND A HOMOGENIZING AGENT CONSISTING OF THE ALKALI METAL SALT OF CARBOXYMETHYL CELLULOSE, AND THE ALKALI METAL SALT OF THE ALIPHATIC INSOLUBLE PORTION OF THE AROMATIC EXTRACT OF PINEWOOD.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |