Patent US3227569A successfully refreshed from Google Patents.
US3227569A
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US
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Method of upgrading sand
Assignee: PRODUCTS DEV Co
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Filing: 1963-12-16
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Granted: 1966-01-04
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:29
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B14/00; C04B14/02; C04B14/04; C04B14/06; C04B26/00; C04B26/02; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF UPGRADING SAND WHICH COMPRISING ADMIXING WITH SAND, IN THE PRESENCE OF MOISTURE, FROM ABOUT 0.00% TO ABOUT 0.25% BY WEIGHT OF A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GLUTELINS, CASEIN, GELATIN, GLUE, GLUTEN, SOYBEAN PROTEIN, AND MIXTURES THEREOF, BASED UPON THE DRY WEIGHT OF THE SAND; AND FROM ABOUT 0.05 TO ABOUT 10% BY WEIGHT OF AN ALKALINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN ALKALINE EARTH METAL HYDROXIDE, AN ALKALINE EARTH METAL OXIDE, PORTLAND CEMENT, AND MIXTURE THEREOF, BASED UPON THE DRY WEIGHT OF THE SAND; THE WEIGHT RATIO OF THE ALKALINE MATERIAL TO THE PROTEIN BEING AT LEAST 1:1.
Claim 2
Independent Claim
106 words
A METHOD OF UPGRADING SAND WHICH COMPRISING ADMIXING WITH SAND, IN THE PRESENCE OF MOISTURE, FROM ABOUT 0.00% TO ABOUT 0.25% BY WEIGHT OF A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GLUTELINS, CASEIN, GELATIN, GLUE, GLUTEN, SOYBEAN PROTEIN, AND MIXTURES THEREOF, BASED UPON THE DRY WEIGHT OF THE SAND; AND FROM ABOUT 0.05 TO ABOUT 10% BY WEIGHT OF AN ALKALINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN ALKALINE EARTH METAL HYDROXIDE, AN ALKALINE EARTH METAL OXIDE, PORTLAND CEMENT, AND MIXTURE THEREOF, BASED UPON THE DRY WEIGHT OF THE SAND; THE WEIGHT RATIO OF THE ALKALINE MATERIAL TO THE PROTEIN BEING AT LEAST 1:1.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |