For the Inventor, By the Inventor

Enter inventor name

Youichi Imagawa

This inventor holds 4 USPTO granted patents. Top assignee: Ryobi Limited. Active years: 1993.

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 4

Forward Citations = 67(Granted Patents)

Company Filing History:

Years Active: 1993

Loading Chart...

4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5267536 - Four-stroke engine having an improved valve mechanism (1993-12-07),

2. 5243937 - Portable engine unit (1993-09-14),

3. 5213074 - Lubricating device of four-stroke cycle engine unit for portable working (1993-05-25),

4. 5176116 - Lubricating device of four-stroke cycle engine unit for portable working (1993-01-05),

Profile summary based on public USPTO records.

Please report any incorrect information to [email protected]

Loading…