Growing community of inventors

Tokyo, Japan

Takeshi Ohnuma

Average Co-Inventor Count = 2.88

ph-index = 3

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 = 29

Takeshi OhnumaTakayuki Naito (4 patents)Takeshi OhnumaHideo Kamei (4 patents)Takeshi OhnumaHideaki Hoshi (2 patents)Takeshi OhnumaRika Obata (2 patents)Takeshi OhnumaTetsuro Yamasaki (1 patent)Takeshi OhnumaTakeshi Ohnuma (6 patents)Takayuki NaitoTakayuki Naito (52 patents)Hideo KameiHideo Kamei (13 patents)Hideaki HoshiHideaki Hoshi (11 patents)Rika ObataRika Obata (2 patents)Tetsuro YamasakiTetsuro Yamasaki (20 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Bristol-myers Squibb Compnay (3 from 3,684 patents)

2. Bristol-myers Company (3 from 637 patents)


6 patents:

1. 5081234 - 4'-demethylepipodophyllotoxin glycosides

2. 5066645 - Epipodophyllotoxin altroside derivatives

3. 5036055 - Acylated derivatives of etoposide

4. 5034380 - Alkoxymethylidene epipodophyllotoxin glucosides

5. 4997931 - Epipodophyllotoxin glycosides

6. 4912204 - Fluoro-substituted epipodophyllotoxin glucosides

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/28/2025
Loading…