US2553618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement bound aggregate masses
Assignee: Individual
•
Filing: 1947-12-22
•
Granted: 1951-05-22
•
Expires: 1967-12-22
Abstract
No abstract record available.
Inventors
- 👤 Corwin D Willson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:44
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/06; C04B28/065; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A STRONG LIGHTWEIGHT WEATHER-RESISTANT BOUND MASS OF AGGREGATED MATERIAL INCLUDING VEGETABLE FIBER DISPERSED IN A HARD-SET BINDER ABOVE 80 PER CENT THEREOF COMPRISING PORTLAND CEMENT AND FROM 5-15 PER CENT COMPRISING AN ADMIXTURE HAVING THE APPROXIMATE FORMULA: HIGH ALUMINA CEMENT BY WEIGHT, 5-15 PARTS OF THE ADMIXTURE; HIGH ALUMINA CLAY, 15-5 PARTS; RAW CLAY, 1-5 PARTS; CALCIUM SULPHATE, 1/2-3 PARTS; AND A CHLORIDE OF CALCIUM, 2-8 PARTS.
Claim 2
Dependent Claim
67 words
A STRONG LIGHTWEIGHT WEATHER-RESISTANT BOUND MASS OF AGGREGATED MATERIAL INCLUDING VEGETABLE FIBER DISPERSED IN A HARD-SET BINDER ABOVE 80 PER CENT THEREOF COMPRISING PORTLAND CEMENT AND FROM 5-15 PER CENT COMPRISING AN ADMIXTURE HAVING THE APPROXIMATE FORMULA: HIGH ALUMINA CEMENT BY WEIGHT, 5-15 PARTS OF THE ADMIXTURE; HIGH ALUMINA CLAY, 15-5 PARTS; RAW CLAY, 1-5 PARTS; CALCIUM SULPHATE, 1/2-3 PARTS; AND A CHLORIDE OF CALCIUM, 2-8 PARTS.
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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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |