US3211675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular concrete and its preparation
Assignee: Ethyl Corp
•
Filing: 1962-01-03
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Granted: 1965-10-12
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B24/00; C04B24/04; C04B24/12; C04B24/24; C04B24/28; C04B24/32; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S264/00; Y10S264/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A COMPOSITION SUITABLE FOR PRODUCING CELLULAR CONCRETE COMPRISING (1) HYDRAUIC CEMENT (2) A RESIN SELECTED FROM THE GROUP CONSISTING OF (A) A POLYURETHANE RESIN DERIVED FROM A POLYISOCYANATE AND AN ORGANIC COMPOUND HAVING AT LEAST ONE LABILE HYDROEN ATOM AND (B) AN EPOXY RESIN DERIVED FROM EPICHLOROHYDRIN AND A POLYHYDROXY HYDROCARBON, AND (3) A METAL HYDROXIDE, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, SAID CEMENT AND SAID RESIN BEING EMPOLYED IN A WEIGHT RATIO OF CEMENT TO RESIN OF ABOUT 1:1 TO ABOUT 50:1.
Claim 2
Dependent Claim
96 words
A COMPOSITION SUITABLE FOR PRODUCING CELLULAR CONCRETE COMPRISING (1) HYDRAULIC CEMENT, (2) A RESIN SELECTED FROM THE GROUP CONSISTING OF (A) A POLYURETHANE RESIN DERIVED FROM A POLYISOCYANATE AND AN ORGANIC COMPOUND HAVING AT LEAST ONE LABILE HYDROEN ATOM AND (B) AN EPOXY RESIN DERIVED FROM EPICHLOROHYDRIN AND A POLYHYDROXY HYDROCARBON, (3) A METALLIC HYDROXIE WHEREIN SAID METAL IS SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, AND (4) A METALLIC EXPANDING AGNT; SAID CEMENT AND SAID RESIN BEING EMPLOYED INA WEIGHT RATIO OF CEMENT TO RESIN OF ABOUT 1:1 TO ABOUT 50:1.
Claim 3
Dependent Claim
16 words
FOAMED CELLUALAR CONCRETE OBTAINED BY ADMIXING WATER WITH THE INGREDIENTS OF THE COMPOSITION OF CLAIM 5.
Claim 4
Dependent Claim
20 words
THE PROCESS OF PRODUCING FOAMED CELLULAR CONCRETE WHICH COMPRISES ADMIXING WATER WITH THE INGREDIENTS OF THE COMPOSITION OF CLAIM 5.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |