Patent US902850A successfully refreshed from Google Patents.
US3553085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing surfaces of plastic for electro-deposition
Assignee: Bayer Pharma AG
•
Filing: 1967-11-28
•
Granted: 1971-01-05
•
Expires: 1987-11-28
Abstract
Abstract THE SPECIFICATION DISCLOSES A METHOD AND COMPOSITIONS FOR PREPARING PLASTIC SURFACES TO RECEIVE A METALLIC DEPOSIT. A SOLUTION COMPRISING A NOBLE METAL SALT AND SULFURIC ACID IS USED TO ACHIEVE SIMULTANEOUS ROUGHENING AND ACTIVATION OF THE SURFACE. IN A PREFERRED EMBODIMENT, THE SOLUTION ALSO CONTAINS AN OXIDIZING AGENT.
Inventors
- 👤 Kurt Heymann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:14
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/31; C23C18/38; C23C18/40; C23C18/405; Y; Y10; Y10S; Y10S205/00; Y10S205/924; Y10S205/928
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |