Patent US3589916A successfully refreshed from Google Patents.
US3589916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autocatalytic gold plating solutions
Assignee: Kollmorgen Corp
•
Filing: 1969-11-14
•
Granted: 1971-06-29
•
Expires: 1989-11-14
Abstract
Abstract IMPROVED ELECTROLESS GOLD PLATING BATHS ARE PROVIDED BY FORMULATING IN AQUEOUS ALKALINE MEDIA, A WATER SOLUBLE GOLD SALT; A COMPLEXING AGENT FOR GOLD, A WATER SOLUBLE BOROHYDRIDE OR AMINE BORANE REDUCING AGENT FOR GOLD, AND A SMALL EFFECTIVE STABILIZING AMOUNT OF A CYANIDE COMPOUND IN AN AMOUNT OF BETWEEN ABOUT 5 MICROGRAMS AND 500 MILLIGRAMS.
Inventors
- 👤 John F Mccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:27
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40; C23C18/42; C23C18/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |