US2820713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortar compositions
Assignee: Tile Council of America Inc
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Filing: 1956-03-02
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Granted: 1958-01-21
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Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Herman B Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:23
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B22/00; C04B22/08; C04B22/14; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A COMPOSITION CAPABLE OF BEING MIXED WITH WATER TO FORM A MORTAR AND COMPRISING PORTLAND CEMENT AS ITS PRINCIPAL INGREDIENT AND THE FOLLOWING INGREDIENTS IN PERCENTAGES BASED ON THE WEIGHT OF THE CEMENT: METHYL CELLULOSE HAVING A VISCOSITY BETWEEN ABOUT 80 AND 6,000 CENTIPOISE IN 2% SOLUTION, ABOUT 0.25% TO 2.2% AND A MIXTURE OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ARYL ESTERS OF AN ALKALI METAL THIOSULFURIC ACID AND AN ALKALINE EARTH METAL POLYSULFIDE ABOUT 2% TO 10%, THE RATIO OF SAID ESTER TO POLYSULFIDE IN SAID MIXTURE BEING BETWEEN ABOUT 1.8:1 AND ABOUT 3:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |