US2750334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of chromium
Assignee: Udylite Research Corp
•
Filing: 1953-01-29
•
Granted: 1956-06-12
•
Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Brown Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:35
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/04; C25D3/10; C25D3/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN A PROCESS OF ELECTROLYSIS OF AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTIONS, THE IMPROVEMENT WHICH CONSISTS IN ADDING TO THE SOLUTION A SATURATED FLUOROCARBON SULFONIC COMPOUND IN SUFFICIENT AMOUNT TO SUBSTANTIALLY DECREASE FORMATION OF SPRAY AND MIST, SAID COMPOUND HAVING 4-18 CARBON ATOMS TO EACH SULFONIC GROUP.
Claim 2
Dependent Claim
46 words
IN A PROCESS OF ELECTROLYSIS OF AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTIONS, THE IMPROVEMENT WHICH CONSISTS IN ADDING TO THE SOLUTION A SATURATED FLUOROCARBON SULFONIC COMPOUND IN SUFFICIENT AMOUNT TO SUBSTANTIALLY DECREASE FORMATION OF SPRAY AND MIST, SAID COMPOUND HAVING 4-18 CARBON ATOMS TO EACH SULFONIC GROUP.
References Cited (Backward Citations)
US2195409A
Cited
US2519983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |