US2662857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling bath agent
Assignee: Pennsylvania Salt Manufacturing Co
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Filing: 1948-03-26
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Granted: 1953-12-15
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Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 James W Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:35
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF REDUCING THE DELAY IN FOAM FORMATION UPON ADDITION OF A FOAMING AGENT TO A NON-OXIDIZING MINERAL ACID PICKING BATH THAT CONTAINS AT LEAST 003% OF A FOAM-DELAYING ORGANIC COLLOID SELECTED FROM THE GROUP CONSISTING OF GELATIN, STARCH AND GLUTEN, BASED ON THE WEIGHT OF THE BATH, THAT COMPRISES INCORPORATING IN THE BATH AT LEAST .00025%, BASED ON THE WEIGHT OF THE PICKLING BATH, OF A CATHIONIC WETTING AGENT CONTAINING, IN THE CATION, FROM ONE TO FOUR BASIC NITROGEN ATOMS, FROM ONE TO TWO ALIPHATIC GROUPS CONTAINING FROM 10 TO 18 CARBON ATOMS, AND FROM ONE TO FOUR HYDROXY-ETHYL GROUPS, SAID AGENT BEING AT LEAST WATER-DISPERSIBLE AT A CONCENTRATION IN WATER OF 0.1% BY WEIGHT.
Claim 2
Independent Claim
117 words
A METHOD OF REDUCING THE DELAY IN FOAM FORMATION UPON ADDITION OF A FOAMING AGENT TO A NON-OXIDIZING MINERAL ACID PICKING BATH THAT CONTAINS AT LEAST 003% OF A FOAM-DELAYING ORGANIC COLLOID SELECTED FROM THE GROUP CONSISTING OF GELATIN, STARCH AND GLUTEN, BASED ON THE WEIGHT OF THE BATH, THAT COMPRISES INCORPORATING IN THE BATH AT LEAST .00025%, BASED ON THE WEIGHT OF THE PICKLING BATH, OF A CATHIONIC WETTING AGENT CONTAINING, IN THE CATION, FROM ONE TO FOUR BASIC NITROGEN ATOMS, FROM ONE TO TWO ALIPHATIC GROUPS CONTAINING FROM 10 TO 18 CARBON ATOMS, AND FROM ONE TO FOUR HYDROXY-ETHYL GROUPS, SAID AGENT BEING AT LEAST WATER-DISPERSIBLE AT A CONCENTRATION IN WATER OF 0.1% BY WEIGHT.
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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |