US2846380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium electroplating
Assignee: Udylite Research Corp
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Filing: 1956-05-07
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Granted: 1958-08-05
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Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Brown Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:51
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04; C25D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A PROCESS OF ELECTRODEPOSITING CHROMIUM FROM AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTIONS, THE IMPROVEMENT WHICH CONSISTS IN ADDING TO THE SOLUTION A COMPOUND HAVING THE FORMULA RFMSO3X, WHERE RF REPRESENTS A SATURATED FLUOROCARBON CHAIN OF 3 TO 12 CARBON ATOMS, M IS A CARBON LINKAGE GROUP CONTAINING FROM 1 TO 4 CARBON ATOMS AND POSITIONED BETWEEN THE RF GROUP AND THE SULFUR OF THE SULFONIC GROUP, THE CARBON ATOMS IN SAID LINKAGE GROUP CARRYING AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, OXYGEN AND NITROGEN AND X IS A CATION, SAID COMPOUND CONTAINING IN THE RF SUBSTITUENT A NUMBER OF ATOMS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE WHICH NUMBER IS MINOR RELATIVE TO THE NUMBER OF FLUORINE ATOMS PRESENT IN SAID RF SUBSTITUENT SAID COMPOUND BEING ADDED IN SUFFICIENT AMOUNT TO SUBSTANTIALLY DECREASE FORMATION OF SPRAY AND MIST.
Claim 2
Dependent Claim
144 words
IN A PROCESS OF ELECTRODEPOSITING CHROMIUM FROM AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTIONS, THE IMPROVEMENT WHICH CONSISTS IN ADDING TO THE SOLUTION A COMPOUND HAVING THE FORMULA RFMSO3X, WHERE RF REPRESENTS A SATURATED FLUOROCARBON CHAIN OF 3 TO 12 CARBON ATOMS, M IS A CARBON LINKAGE GROUP CONTAINING FROM 1 TO 4 CARBON ATOMS AND POSITIONED BETWEEN THE RF GROUP AND THE SULFUR OF THE SULFONIC GROUP, THE CARBON ATOMS IN SAID LINKAGE GROUP CARRYING AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, OXYGEN AND NITROGEN AND X IS A CATION, SAID COMPOUND CONTAINING IN THE RF SUBSTITUENT A NUMBER OF ATOMS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE WHICH NUMBER IS MINOR RELATIVE TO THE NUMBER OF FLUORINE ATOMS PRESENT IN SAID RF SUBSTITUENT SAID COMPOUND BEING ADDED IN SUFFICIENT AMOUNT TO SUBSTANTIALLY DECREASE FORMATION OF SPRAY AND MIST.
References Cited (Backward Citations)
US2750334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |