IP Library › Granted Patent US 11,241,907
Granted Patent B2
US 11,241,907 · App. 16/315,303 · Granted Feb 8, 2022

Eraser

Inventor: Andreas Thies (Effeltrich, DE)
Assignee: STAEDTLER MARS GMBH & CO. KG
B43L19/0025C09D9/02
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,241,907
App. No.
16/315,303
Granted
Feb 8, 2022
Kind
B2
Abstract

An eraser for removing strokes of writing, painting and/or drawing implements, including at least one binder and at least one plasticizer, wherein the at least one plasticizer is a polyol ester.

Claims (16)

1. An eraser for removing marks by writing, painting and/or drawing implements, comprising: at least one binder, wherein the binder is at least one of the group consisting of: polyamide (PA), polyurethane (PU), polyolefins (PO), rubber, polyvinyl acetate (PVAc), and mixtures thereof; and, at least one plasticizer, wherein the at least one plasticizer is formed by a polyol ester.

2. The eraser according to claim 1 , wherein the eraser comprises polyol ester in a quantity of 20% to 60% by weight.

3. The eraser according to claim 1 , further comprising chalk (calcium carbonate), mineral compounds and/or organic fillers as fillers.

4. The eraser according to claim 3 , wherein the mineral compounds are at least one of the group consisting of: pumice powder, kaolin, glass powder, clay and talc.

5. The eraser according to claim 3 , wherein the organic filers are wood flour, meal and/or products derived therefrom.

6. An eraser for removing marks by writing, painting and/or drawing implements, comprising:

PVC as binder

20-60% by weight

Polyol ester as plasticizer

20-60% by weight

Organic Fillers

 0-60% by weight

Other additives

  0-10% by weight,

wherein the organic fillers are wood flour and/or products derived therefrom.

7. The eraser according to claim 6 , wherein the eraser comprises colorants, waxes, oils, emulsifiers, stabilizers, solvents and/or abrasive aggregates as the other additives.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 27, 2023
From: STAEDTLER MARS GMBH & CO. KG
To: STAEDTLER SE
Reel/Frame 065678/0156 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 4, 2019
From: THIES, ANDREAS
To: STAEDTLER MARS GMBH & CO. KG
Reel/Frame 047902/0292 →
Priority Claims (1)
DE 10 2016 008 559.2 · Jul 12, 2016 · national
Continuity (1)
Related Publication 20200180351A1 · Jun 11, 2020