US2946158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite building unit
Assignee: Keasbey and Mattison Co
•
Filing: 1954-06-07
•
Granted: 1960-07-26
•
Expires: 1974-06-07
Abstract
No abstract record available.
Inventors
- 👤 Willard R Seipt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:31
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A COMPOSITE STRUCTURAL UNIT COMPRISING A STRENGTH ELEMENT COMPRISING HYDROUS CALCIUM SILICATE HAVING MICROPORES MAKING UP NOT MORE THAN 35% OF THE TOTAL VOLUME OF THE STRENGTH ELEMENT, AND AN INSULATING ELEMENT COMPRISING HYDROUS CALCIUM SILICATE HAVING MICROPORES MAKING UP BETWEEN 75% AND 95% OF THE TOTAL VOLUME OF THE INSULATING ELEMENT, SAID UNIT BEING FURTHER CHARACTERIZED BY AN INTER-ELEMENT BOND CONSISTING ESSENTIALLY OF HYDROUS CALCIUM SILICATE.
Claim 2
Dependent Claim
26 words
A STRUCTURAL UNIT IN ACCORDANCE WITH CLAIM 5 IN WHICH THE STRENGTH ELEMENT EXTENDS IN AT LEAST ONE DIRECTION BEYOND THE EDGE OF THE INSULATING ELEMENT.
References Cited (Backward Citations)
US1140559A
Cited
US1770767A
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US1732368A
Cited
US1804753A
Cited
US2241604A
Cited
US2237258A
Cited
US2421721A
Cited
US2446782A
Cited
US2540354A
Cited
US2544488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |