logo

For the Inventor, By the Inventor

Yokohama, Japan

Harumichi Watanabe

This inventor holds 5 USPTO granted patents. Top assignee: Nippon Oil Company. Active years: 1983-1991.

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 5

Forward Citations = 60(Granted Patents)


Company Filing History:

goldMedal5 out of 690 
 
Nippon Oil Company
 patents

Years Active: 1983-1991

Loading Chart...
5 patents (USPTO):Explore Patents
1. 4992150 - Process for preparing oil-soluble nitrogen-containing compounds (1991-02-12),
2. 4737297 - Synthetic lubricating oils (1988-04-12),
3. 4714794 - Synthetic oils (1987-12-22),
4. 4665275 - Thermal medium oils (1987-05-12),
5. 4392968 - Metal deactivator and composition containing same (1983-07-12),
Profile summary based on public USPTO records.
Please report any incorrect information to [email protected]
Loading…