Back to results
US 12,103,329 B2Granted
Eraser
AssigneeStaedtler SE
InventorTanja Maderer
Life of this patent
Estimating the term…
Abstract
An eraser for removing strokes of writing, painting and/or drawing tools, including at least one binder and at least one plasticizer. The eraser includes at least one plasticizer in the form of pentaerythritol tetravalerate.
Claims5
An eraser for removing strokes from writing, painting and/or drawing tools, comprising:
- at least one binder;
- and at least one plasticizer, wherein, the at least one plasticizer includes pentaerythritol tetravalerate as a first plasticizer component and epoxidized soybean oil (ESBO) as a second plasticizer component, wherein the eraser is composed of:
- Binder
- 20-60%
- by weight,
- pentaerythritol tetravalerate
- 10-30%
- by weight,
- epoxidized soybean oil
- 10-30%
- by weight,
- Fillers
- 0-60%
- by weight,
- Additives
- 0-10%
- by weight.
14 more elements
Dependencies are inferred from the claim text.