US3411996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for brightening zinc and cadmium electroplate using an inner salt of a quaternized pyridine carboxylic acid and compositions containing the same
Assignee: EIDP Inc
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Filing: 1967-09-20
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Granted: 1968-11-19
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 John D Rushmere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:17
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C25; C25D; C25D3/00; C25D3/02; C25D3/22; C25D3/24; C25D3/26; C25D3/28; C25D3/34; C25D3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536859A
Cited
US2080520A
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US2171842A
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US2803593A
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US3317412A
Cited
US3318787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |