Growing community of inventors

Yokohama, Japan

Ritsuko Katahira

Average Co-Inventor Count = 7.00

ph-index = 1

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 = 3

Ritsuko Katahira ↔ Yoshinori Yamashita (2 patents)Ritsuko Katahira ↔ Hirofumi Nakano (1 patent)Ritsuko Katahira ↔ Akira Asai (1 patent)Ritsuko Katahira ↔ Shiro Akinaga (1 patent)Ritsuko Katahira ↔ Tadashi Ashizawa (1 patent)Ritsuko Katahira ↔ Keiko Ochiai (1 patent)Ritsuko Katahira ↔ Tamio Mizukami (1 patent)Ritsuko Katahira ↔ Shigeru Chiba (1 patent)Ritsuko Katahira ↔ Harumi Ogawa (1 patent)Ritsuko Katahira ↔ Atsuhiro Hasegawa (1 patent)Ritsuko Katahira ↔ Toshiaki Iwasaki (1 patent)Ritsuko KatahiraRitsuko Katahira (2 patents)Yoshinori YamashitaYoshinori Yamashita (62 patents)Hirofumi NakanoHirofumi Nakano (49 patents)Akira AsaiAkira Asai (40 patents)Shiro AkinagaShiro Akinaga (40 patents)Tadashi AshizawaTadashi Ashizawa (32 patents)Keiko OchiaiKeiko Ochiai (27 patents)Tamio MizukamiTamio Mizukami (23 patents)Shigeru ChibaShigeru Chiba (15 patents)Harumi OgawaHarumi Ogawa (5 patents)Atsuhiro HasegawaAtsuhiro Hasegawa (3 patents)Toshiaki IwasakiToshiaki Iwasaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kyowa Hakko Kogyo Co., Ltd. (2 from 730 patents)


2 patents:

1. 5663298 - UCK14 compounds

2. 5656736 - Compound UCH9

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/3/2026
Loading…