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Inventor

Guang Yu

Inventor
Beijing, CN

Overview

4→
Patents
2008–2019
Patent span
LOC
Primary field

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

LOC15primary
LOC1540%
G02BOptical elements, systems or apparatus20%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them20%
LOC0720%
PatentTitleYear
D0868407Cleaning pad2019D0868408Tank2019D0867701Cleaning robot20197,386,215'Projection system and light tunnel thereof'2008

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2008Patents assigned to PRODISC TECHNOLOGY INC (1)· patent assignee history
2008Based in Taipei, TW· patent location history
2019Patents assigned to BEIJING ROCKROBO TECH CO LTD (3)· patent assignee history
2019Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BEIJING ROCKROBO TECH CO LTD32019
PRODISC TECHNOLOGY INC12008
Locations
LocationPatentsSpan
Beijing, CN32019
Taipei, TW12008