Growing community of inventors

Tokyo, Japan

Hirokazu Kawabe

Average Co-Inventor Count = 1.30

ph-index = 4

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 = 71

Hirokazu KawabeKiyoshi Imai (1 patent)Hirokazu KawabeMasanobu Miyakoshi (1 patent)Hirokazu KawabeHiroshi Tanabe (1 patent)Hirokazu KawabeHirokazu Kawabe (5 patents)Kiyoshi ImaiKiyoshi Imai (9 patents)Masanobu MiyakoshiMasanobu Miyakoshi (8 patents)Hiroshi TanabeHiroshi Tanabe (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Nagaoka (4 from 8 patents)

2. Shin-etsu Chemical Co., Ltd. (1 from 5,973 patents)

3. Nagaoka Co., Ltd. (1 from 30 patents)


5 patents:

1. D288018 - Case for a compact disc surface cleaning device and compact disc

2. 4628388 - Head cleaning apparatus

3. 4569098 - Disc-cleaning device

4. 4128909 - Roller for cleaning phonograph records

5. 4089530 - Phonographic stylus

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as of
12/21/2025
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