US3798138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper
Assignee: Shipley Co Inc
•
Filing: 1971-07-21
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Granted: 1974-03-19
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Expires: 1991-07-21
Abstract
Abstract COOPER IS ELECTRODEPOSITED FROM AN AQUEOUS ACID PLATING BATH OR SOLUTION CONTAINING AT LEASTT ONE COPPER SALT, A HETEROCYCLIC SULPHUR-NITROGEN ORGANIC COMPOUND, SUCH AS WATER SOLUBLE DERIVATIVES OF 2-THIAZOLIDINETHIONES, 2-IMIDAZOLIDINETIONES OR THEIR REACTION PRODUCTS WITH ALKYL ALDEHYDES OR DIALDEHYDES, AND A WATER SOLUBLE BRIGHTENER CONTAINING A CARBON-SULPHUR GROUP IN WHICH THE CARBON ATOM IS ATTACHED TO AT LEAST ONE OTHER HETERO-ATOM, SUCH AS SULPHUR OR NITROGEN.
Inventors
- 👤 B Ostrow
- 👤 F Nobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 0
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |