US2901434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
- jl jfco
Assignee: —
•
Filing: —
•
Granted: 1959-08-25
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Expires: 1976-08-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:23
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D1/29; C11D3/042; C11D3/044; C11D3/06; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/225; C11D3/34; C11D3/3418; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE PROCESS OF CLEANING THE SURFACE OF RAILROAD ROLLING STOCK WHICH COMPRISES APPLYING TO SAID SURFACE AN AQUEOUS SOLUTION CONTAINING FOR EACH GALLON THEREOF ABOUT FOUR OUNCES OF MIXTURE CONSISTING ESSENTIALLY, ON A DRY WEIGHT BASIS, OF ABOUT 3-6% AT LEAST ONE SYNTHETIC WETTING AGENT HAVING SURFACE ACTIVITY AT A PH OF 1 AND SELECTED FROM NON-IONIC AND ANIONIC AGENTS EXCLUSIVE OF SOAP, ABOUT .25 TO 10% OF A WATER-SOLUBLE MAGNESIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM SULFATE AND MAGNESIUM CHLORIDE, A MINOR PROPORTION UP TO ABOUT 3% OF A WATER-SOLUBLE CELLULOSE DISPERSING AGENT, A MINOR PROPORTION UP TO ABOUT 5% OF THE MOLECULARLY DEHYDRATED PHOSPHATE SALT OF AN ALKALI METAL, ABOUT 1-3% BENZALDEHYDE, AND THE REMAINDER SODIUM ACID SULFATE, THE SOLUTION HAVING A PH OF ABOUT ONE.
Claim 2
Dependent Claim
130 words
THE PROCESS OF CLEANING THE SURFACE OF RAILROAD ROLLING STOCK WHICH COMPRISES APPLYING TO SAID SURFACE AN AQUEOUS SOLUTION CONTAINING FOR EACH GALLON THEREOF ABOUT FOUR OUNCES OF MIXTURE CONSISTING ESSENTIALLY, ON A DRY WEIGHT BASIS, OF ABOUT 3-6% AT LEAST ONE SYNTHETIC WETTING AGENT HAVING SURFACE ACTIVITY AT A PH OF 1 AND SELECTED FROM NON-IONIC AND ANIONIC AGENTS EXCLUSIVE OF SOAP, ABOUT .25 TO 10% OF A WATER-SOLUBLE MAGNESIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM SULFATE AND MAGNESIUM CHLORIDE, A MINOR PROPORTION UP TO ABOUT 3% OF A WATER-SOLUBLE CELLULOSE DISPERSING AGENT, A MINOR PROPORTION UP TO ABOUT 5% OF THE MOLECULARLY DEHYDRATED PHOSPHATE SALT OF AN ALKALI METAL, ABOUT 1-3% BENZALDEHYDE, AND THE REMAINDER SODIUM ACID SULFATE, THE SOLUTION HAVING A PH OF ABOUT ONE.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |