Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby
US-12421462-B2 · Sep 23, 2025 · US
Method for treating spent abrasive slurry
US8940174B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940174-B2 |
| Application number | US-29901707-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 30, 2007 |
| Priority date | Oct 30, 2007 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
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A method for treating spent abrasive slurry obtained from cutting a body of a substrate material into wafer-like slices, the slurry comprising a lubricant fluid, unspent abrasive particles and fines, is disclosed, method comprising separating the spent slurry in a first sedimentation step into a solids concentrate comprising unspent abrasive particles and a solids depleted slurry; and subsequently separating the solids depleted slurry by cross-flow filtration into a fines containing fraction and a solids and fines depleted regenerated lubricant fluid.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for treating a spent abrasive slurry obtained from a process for cutting a body of a substrate material into wafer-like slices, said slurry comprising a lubricant fluid, unspent abrasive particles and fines, said method comprising separating the spent slurry in a first sedimentation step into a solids concentrate comprising unspent abrasive particles and a solids depleted slurry; and subsequently separating the solids depleted slurry by cross-f…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
- C10M175/0058Primary
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8940174B2 cover?
- A method for treating spent abrasive slurry obtained from cutting a body of a substrate material into wafer-like slices, the slurry comprising a lubricant fluid, unspent abrasive particles and fines, is disclosed, method comprising separating the spent slurry in a first sedimentation step into a solids concentrate comprising unspent abrasive particles and a solids depleted slurry; and subsequen…
- Who is the assignee on this patent?
- Berndt Rolf, Ruth Jochen, Pall Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M175/0058. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).