US2613218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum neutralization of detergents
Assignee: Purex Corp Ltd
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Filing: 1950-06-12
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Granted: 1952-10-07
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Expires: 1970-06-12
Abstract
No abstract record available.
Inventors
- 👤 Alan C Stoneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:16
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD OF NEUTRALIZING AN ACIDIC STOCK OF THE CLASS CONSISTING OS SULFONATED AND SULFATED ORGANIC COMPOUNDS HAVING AN ALIPHATIC RADICAL CONTAINING BETWEEN ABOUT 8 TO 18 CARBON ATOMS AND THE ALKALI METAL SALTS OF WHICH HAVE DETERGENT PROPERTIES, THAT INCLUDES CONVERTING SAID STOCK TO A SLURRY OF A WATER DISPERSABLE ALKALI METAL SALT THEREOF BY DISCHARGING A MIXTURE OF SAID STOCK AND AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE IN FINELY DIVIDED FORM OPENLY AND THROUGH AN EXTENDED PATH WITHIN THE ATMOSPHERE OF A ZONE MAINTAINED AT AN ABSOLUTE PRESSURE BETWEEN ABOUT 9 TO 88 MM. OF MERCURY AND AT A TEMPERATURE BETWEEN ABOUT 50* TO 120* F., LIMITING DEHYDRATION OF THE MIXTURE TO PRODUCE A FLOWABLE SLURRY, AND FLOWING THE SLURRY FROM SAID ZONE.
Claim 2
Independent Claim
127 words
THE METHOD OF NEUTRALIZING AN ACIDIC STOCK OF THE CLASS CONSISTING OS SULFONATED AND SULFATED ORGANIC COMPOUNDS HAVING AN ALIPHATIC RADICAL CONTAINING BETWEEN ABOUT 8 TO 18 CARBON ATOMS AND THE ALKALI METAL SALTS OF WHICH HAVE DETERGENT PROPERTIES, THAT INCLUDES CONVERTING SAID STOCK TO A SLURRY OF A WATER DISPERSABLE ALKALI METAL SALT THEREOF BY DISCHARGING A MIXTURE OF SAID STOCK AND AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE IN FINELY DIVIDED FORM OPENLY AND THROUGH AN EXTENDED PATH WITHIN THE ATMOSPHERE OF A ZONE MAINTAINED AT AN ABSOLUTE PRESSURE BETWEEN ABOUT 9 TO 88 MM. OF MERCURY AND AT A TEMPERATURE BETWEEN ABOUT 50* TO 120* F., LIMITING DEHYDRATION OF THE MIXTURE TO PRODUCE A FLOWABLE SLURRY, AND FLOWING THE SLURRY FROM SAID ZONE.
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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |