US3082111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrective backfill composition
Assignee: Whitehead Brothers Co
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Filing: 1960-06-14
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Granted: 1963-03-19
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Expires: 1980-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Maddison
- 👤 Jr John F Loertscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:26
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A COMPOSITION OF MATTER HAVING A DRY DENSITY GREATER THAN 112.5 POUNDS PER CUBIC FOOT WHEN COMPACTED AND HAVING A THERMAL RESISTIVITY OF LESS THAN 32.5 RHOS WHEN TESTED WITH MAXIMUM MOISTURE CONTENT CONSISTING ESSENTIALLY OF 0.6-55.% SAND RETAINED ON #6 SCREEN, 6.012.8% SAND RETAINED ON #12 SCREEN, 0.6-16.6% SAND RETAINED ON #20 SCREEN, 0.2-11.4% SAND RETAINED ON #30 SCREEN, 0.2-11.4% SAND RETAINED ON #40 SCREEN, 0.49.0% SAND RETAINED ON #50 SCREEN, 1.4-17.0% SAND RETAINED ON #70 SCREEN, 3.0-11.8% SAND RETAINED ON #100 SCREEN 4.2-11.8% SAND RETAINED ON #140 SCREEN, 1.411.0% SAND RETAINED ON #200 SCREEN, 0.6-4.2% SAND RETAINED ON #270 SCREEN, 1.2-10.6% PAN, AND 4.6-11.2% CLAY ANALYSED BY SERIES SCREENING AND STANDARD CLAY ANALYSIS.
Claim 2
Dependent Claim
115 words
A COMPOSITION OF MATTER HAVING A DRY DENSITY GREATER THAN 112.5 POUNDS PER CUBIC FOOT WHEN COMPACTED AND HAVING A THERMAL RESISTIVITY OF LESS THAN 32.5 RHOS WHEN TESTED WITH MAXIMUM MOISTURE CONTENT CONSISTING ESSENTIALLY OF 0.6-55.% SAND RETAINED ON #6 SCREEN, 6.012.8% SAND RETAINED ON #12 SCREEN, 0.6-16.6% SAND RETAINED ON #20 SCREEN, 0.2-11.4% SAND RETAINED ON #30 SCREEN, 0.2-11.4% SAND RETAINED ON #40 SCREEN, 0.49.0% SAND RETAINED ON #50 SCREEN, 1.4-17.0% SAND RETAINED ON #70 SCREEN, 3.0-11.8% SAND RETAINED ON #100 SCREEN 4.2-11.8% SAND RETAINED ON #140 SCREEN, 1.411.0% SAND RETAINED ON #200 SCREEN, 0.6-4.2% SAND RETAINED ON #270 SCREEN, 1.2-10.6% PAN, AND 4.6-11.2% CLAY ANALYSED BY SERIES SCREENING AND STANDARD CLAY ANALYSIS.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |