US2851639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically-conductive ceramic floortile units and floors composed of such conductive units
Assignee: Mosaic Tile Co
•
Filing: 1952-03-27
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Granted: 1958-09-09
•
Expires: 1972-03-27
Abstract
No abstract record available.
Inventors
- 👤 George D Ford
- 👤 Otto T Kauffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:38
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02; H05F3/025; C; C04; C04B; C04B33/00; C04B33/02; H01; H01B; H01B1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A CONDUCTIVE CERAMIC FLOOR-TILE UNIT COMPRISING A TILE BODY COMPOSED OF A PLURALITY OF EARTHEN MATERIALS THAT ARE HARDENED BY FIRING UNDER A SUITABLE TEMPERATURE AND COMPRISING A QUANTITY OF FERROSFERRIC OXIDE (FE3O4), AMOUNTING TO BETWEEN 29% AND 60% OF THE TILE BODY BY WEIGHT, IN COMBINATION WITH A BALANCING AMOUNT OF CLAY SUITABE FOR USE IN CERAMIC TILE MANUFACTURE.
Claim 2
Dependent Claim
60 words
A CONDUCTIVE CERAMIC FLOOR-TILE UNIT COMPRISING A TILE BODY COMPOSED OF A PLURALITY OF EARTHEN MATERIALS THAT ARE HARDENED BY FIRING UNDER A SUITABLE TEMPERATURE AND COMPRISING A QUANTITY OF FERROSFERRIC OXIDE (FE3O4), AMOUNTING TO BETWEEN 29% AND 60% OF THE TILE BODY BY WEIGHT, IN COMBINATION WITH A BALANCING AMOUNT OF CLAY SUITABE FOR USE IN CERAMIC TILE MANUFACTURE.
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |