US2868705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of electrolytically treating metal to clean, level, smooth, polish and/or protect the surfaces thereof
Assignee: Individual
•
Filing: 1955-01-19
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Granted: 1959-01-13
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Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 John J Baier
- 👤 Wodetzky Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:03
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ELECTROLYTE FOR USE IN ANODICALLY TREATING METAL SURFACES, CONSISTING ESSENTIALLY OF PHOSPHORIC ACID AND CHROMIC ACID AND CONTAINING 0.7 TO 2.7% BY WEIGHT OF SULFURIC ACID AND 0.004 TO 0.014% OF HYDROFLUORIC ACID.
Claim 2
Dependent Claim
34 words
AN ELECTROLYTE FOR USE IN ANODICALLY TREATING METAL SURFACES, CONSISTING ESSENTIALLY OF PHOSPHORIC ACID AND CHROMIC ACID AND CONTAINING 0.7 TO 2.7% BY WEIGHT OF SULFURIC ACID AND 0.004 TO 0.014% OF HYDROFLUORIC ACID.
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |