US2676153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing an aluminumcaustic soda composition
Assignee: Mathieson Chemical Corp
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Filing: 1950-04-13
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Granted: 1954-04-20
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Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Macmahon James Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PREPARING AN IMPROVED DRAIN OPENING COMPOSITION OF IMPROVED HOMOGENEITY AND STABILITY IN WHICH CAUSTIC SODA AND ALUMINUM ARE PRESENT IN INTIMATELY BOUND RELATION NOT PERMITTING SEGERGATION WHICH COMPRISES UNIFORMLY DISPERSING INTO FUSED CAUSTIC SODA MAINTAINED AT A TEMPERATURE IN THE RANGE APPROXIMATING 625* TO 800* F., GRANULES OF METALLIC ALUMINUM HAVING A PRARTICLE SIZE PASSING A 20-MESH SCREEN AND IN AN AMOUNT OF ABOUT 2 TO 10 PER CENT BASED ON THE WEIGHT OF THE CAUSTIC SODA, COOLING AND SOLIDIFYING THE MIXTURE IN THIN SHEETS, AND FINELY DIVIDING THE THIN SHEETS.
Claim 2
Independent Claim
94 words
THE METHOD OF PREPARING AN IMPROVED DRAIN OPENING COMPOSITION OF IMPROVED HOMOGENEITY AND STABILITY IN WHICH CAUSTIC SODA AND ALUMINUM ARE PRESENT IN INTIMATELY BOUND RELATION NOT PERMITTING SEGERGATION WHICH COMPRISES UNIFORMLY DISPERSING INTO FUSED CAUSTIC SODA MAINTAINED AT A TEMPERATURE IN THE RANGE APPROXIMATING 625* TO 800* F., GRANULES OF METALLIC ALUMINUM HAVING A PRARTICLE SIZE PASSING A 20-MESH SCREEN AND IN AN AMOUNT OF ABOUT 2 TO 10 PER CENT BASED ON THE WEIGHT OF THE CAUSTIC SODA, COOLING AND SOLIDIFYING THE MIXTURE IN THIN SHEETS, AND FINELY DIVIDING THE THIN SHEETS.
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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |