logo

For the Inventor, By the Inventor

Tokyo, Japan

Kazuo Ohtsuki

This inventor holds 6 USPTO granted patents. Top assignees: Nippon Kayaku Kabushiki Kaisha, Snow Brand Milk Products Co., Ltd.. Active years: 1991-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Ohtsuki. Retrieved from https://idiyas.com/inventor/kazuo-ohtsuki

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 19(Granted Patents)


Company Filing History:

goldMedal5 out of 799 
 
Nippon Kayaku Kabushiki Kaisha
 patents
silverMedal2 out of 200 
 
Snow Brand Milk Products Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1991-1997

Loading Chart...
6 patents (USPTO):Explore Patents
1. 5648507 - 14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate and process for (1997-07-15),
2. 5614651 - 14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate crystal and process (1997-03-25),
3. 5326753 - Freeze-dried composition containing a 2-dimethylamino etoposide (1994-07-05),
4. 5103022 - Process for producing an optically active aminoketone derivative (1992-04-07),
5. 5057535 - Derivatives of an aminoketone (1991-10-15),
6. 4997923 - Dihydrate crystals of etoposide-2-dimethylamino compound hydrochloride (1991-03-05),
Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…