Method for removing rare earth impurities from nickel-electroplating solution
US-2016002814-A1 · Jan 7, 2016 · US
Method for removing rare earth impurities from nickel-electroplating solution
US9771664B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9771664-B2 |
| Application number | US-201414771330-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 17, 2014 |
| Priority date | Mar 25, 2013 |
| Publication date | Sep 26, 2017 |
| Grant date | Sep 26, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method for removing rare earth impurities from a nickel-electroplating solution by keeping a nickel-electroplating solution containing rare earth impurities and having pH of 4.0-5.1 at 60° C. or higher for a certain period of time, and then removing precipitate generated by the heating from the nickel-electroplating solution by sedimentation and/or filtration.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for removing rare earth impurities from a nickel-electroplating solution, consisting essentially of keeping a nickel-electroplating solution containing rare earth impurities and having pH of 4.0-4.5 without pH adjustment with heating at 60° C. or higher for 6 hours or more; and then removing a precipitate generated by said heating from said nickel-electroplating solution by sedimentation and/or filtration. 2. The method for removing rare earth impurities from a nickel-electroplating solution according to claim 1 , wherein said nickel-electroplating solution is stirred while heating. 3. The method for removing rare earth impurities from a nickel-electroplating solution according to claim 2 , wherein the solution is stirred by air, rotating stirring blades, or circulation by a pump.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9771664B2 cover?
- A method for removing rare earth impurities from a nickel-electroplating solution by keeping a nickel-electroplating solution containing rare earth impurities and having pH of 4.0-5.1 at 60° C. or higher for a certain period of time, and then removing precipitate generated by the heating from the nickel-electroplating solution by sedimentation and/or filtration.
- Who is the assignee on this patent?
- Hitachi Metals Ltd
- What technology area does this patent fall under?
- Primary CPC classification C25D21/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 26 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).