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Torrance, CA, United States of America

Minoru Osada

Average Co-Inventor Count = 1.25

ph-index = 5

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 87

Minoru Osada ↔ Nobuyuki Iwamoto (2 patents)Minoru OsadaMinoru Osada (5 patents)Nobuyuki IwamotoNobuyuki Iwamoto (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Pentel of America, Ltd. (5 from 23 patents)


5 patents:

1. D368738 - Pencil

2. D358168 - Automatic pencil

3. D358170 - Grip for a writing instrument

4. D358169 - Retractable eraser

5. D353838 - Pen

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as of
12/9/2025
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