Patent US3227638A successfully refreshed from Google Patents.
US3227638A
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Alkali cyanide bath and process for electroplating therewith
Assignee: Individual
•
Filing: 1964-06-19
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Granted: 1966-01-04
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H Burnson
- 👤 Rucins Laimons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:35
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/12; C07D487/18; C25; C25D; C25D3/00; C25D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN AQUEOUS ALKALI-CYANIDE BATH FOR USE IN ELECTROPLATING, SAID BATH CONTAINING METAL IONS AND A BRIGHTENING AGENT WHICH IS THE PRODUCT RESULTING FROM THE HEATING OF A MIXTURE CONTAINING APPROXIMATELY EQUIMOLAR AMOUNTS OF HEXAMETHYLENETETRAMINE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLORHYDRIN AND ALPHACHLORGLYCEROL, IN THE PRESENCE OF ABOUT 1 TO 2 PARTS BY WEIGHT OF WATER BASED ON THE WEIGHT OF THE HEXAMETHYLENETETRAMINE TO A TEMPERATURE OF FROM ABOUT 25*C. TO REFLUXING TEMPERATURE FOR A PERIOD OF ABOUT 15 MINUTES TO 4 HOURS.
Claim 2
Dependent Claim
86 words
AN AQUEOUS ALKALI-CYANIDE BATH FOR USE IN ELECTROPLATING, SAID BATH CONTAINING METAL IONS AND A BRIGHTENING AGENT WHICH IS THE PRODUCT RESULTING FROM THE HEATING OF A MIXTURE CONTAINING APPROXIMATELY EQUIMOLAR AMOUNTS OF HEXAMETHYLENETETRAMINE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLORHYDRIN AND ALPHACHLORGLYCEROL, IN THE PRESENCE OF ABOUT 1 TO 2 PARTS BY WEIGHT OF WATER BASED ON THE WEIGHT OF THE HEXAMETHYLENETETRAMINE TO A TEMPERATURE OF FROM ABOUT 25*C. TO REFLUXING TEMPERATURE FOR A PERIOD OF ABOUT 15 MINUTES TO 4 HOURS.
References Cited (Backward Citations)
US2844490A
Cited
US2828252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |