Forward Citations = 33

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4 inventors (with patents filed for the assignee):

Hans-Dieter Rosel (2 out of 3 patents)

Bernhard Endres (1 out of 2 patents)

Klaus Glombitza (1 out of 1 patent)

4. Engelbert Brunner (1 out of 2 patents)

4 patents: Sort by Forward Citations

1. 4538934 - Automatic lead advancing mechanism for a mechanical pencil (1985-09-03),

2. 4423429 - Writing medium unit for writing or drawing machines (1983-12-27),

3. 4392147 - Apparatus for supplying and regulating a writing medium to the writing (1983-07-05),

4. 4380403 - Closure cap for a writing instrument (1983-04-19),

J.S. Staedtler KG is a German-based company that specializes in manufacturing writing instruments and art supplies. With over 180 years of experience, Staedtler is known for producing high-quality products such as pencils, pens, markers, and colored pencils. The company is committed to innovation, sustainability, and creativity, making Staedtler a trusted brand among artists, students, and professionals worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

4 Patents

#37 in Nuremberg

#6,929 in Germany

Nuremberg, Germany

J.s. Staedtler K.g.

Forward Citations = 33

4 inventors:

Hans-Dieter Rosel (2 out of 3 patents)

Bernhard Endres (1 out of 2 patents)

Klaus Glombitza (1 out of 1 patent)

4. Engelbert Brunner (1 out of 2 patents)

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