US2852447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrodepositing chromium
Assignee: Individual
•
Filing: 1955-10-21
•
Granted: 1958-09-16
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Hausner Johann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:57
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/02; C25D5/18; C25D5/60; C25D5/615; C25D5/617; C25D5/623; Y; Y10; Y10S; Y10S204/00; Y10S204/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR OBTANINING CHROMIUM FOR USE AS AN ACCELERATOR FOR THE BOILING OF LIQUIDS, WHICH COMPRISES IMPOSING A D.C FIELD OF 120 TO 320 AMPERES/DM.2 CURRENT DENSITY ON A PLATING BATH OF ELECTROLYTE CONTAINING CHROMIUM AND SUPERIMPOSING ON THE D.C. FIELD A HIGH FRE-
Claim 2
Dependent Claim
45 words
A PROCESS FOR OBTANINING CHROMIUM FOR USE AS AN ACCELERATOR FOR THE BOILING OF LIQUIDS, WHICH COMPRISES IMPOSING A D.C FIELD OF 120 TO 320 AMPERES/DM.2 CURRENT DENSITY ON A PLATING BATH OF ELECTROLYTE CONTAINING CHROMIUM AND SUPERIMPOSING ON THE D.C. FIELD A HIGH FRE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |