US2680712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline zinc plating baths
Assignee: Hanson Van Winkle Munning Co
•
Filing: 1951-08-07
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Granted: 1954-06-08
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Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 Myron B Diggin
- 👤 Kardos Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22; C25D3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN AQUEOUS AKALINE CYANIDE ZINC PLATING BATH CONTAINING, IN AMOUNTS OF SUBSTANTIALLY 2.5 TO 9.5 G./LITER, AS A BRIGHTENING AGENT A CONDENSATION POLYMER OF AN ALIPHATIC ALKYLENEPOLYAMINE WITH FURFURAL-SODIUM BISULPHITE AND FORMALDEHYDE, 0 TO 50% OF THE LATTER IN THE FORM OF ITS SODIUM BISULPHITE COMPOUNDS.
Claim 2
Dependent Claim
46 words
AN AQUEOUS AKALINE CYANIDE ZINC PLATING BATH CONTAINING, IN AMOUNTS OF SUBSTANTIALLY 2.5 TO 9.5 G./LITER, AS A BRIGHTENING AGENT A CONDENSATION POLYMER OF AN ALIPHATIC ALKYLENEPOLYAMINE WITH FURFURAL-SODIUM BISULPHITE AND FORMALDEHYDE, 0 TO 50% OF THE LATTER IN THE FORM OF ITS SODIUM BISULPHITE COMPOUNDS.
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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |