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Inventor

Frank Xi

Inventor
Shanghai, CN

Overview

2→
Patents
2014–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

A47Lprimary
A47LDomestic washing or cleaning50%
H05BElectric heating50%
PatentTitleYear
10,980,383Water-absorbing cyclone dust cup for secondary dust-air separation and vacuum cleaner thereof20218,872,440'Open LED bypass circuit and associated methods of operation'2014

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2014Patents assigned to CHENGDU MONOLITHIC POWER SYS (1)· patent assignee history
2014Patents assigned to XI FRANK (1)· patent assignee history
2014Patents assigned to ZHANG ZHENGWEI (1)· patent assignee history
2014Based in Chengdu, CN· patent location history
2021Patents assigned to CUORI ELECTRICAL APPLIANCES GROUP CO LTD (1)· patent assignee history
2021Based in Shanghai, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHENGDU MONOLITHIC POWER SYS12014
CUORI ELECTRICAL APPLIANCES GROUP CO LTD12021
XI FRANKself12014
ZHANG ZHENGWEI12014
Locations
LocationPatentsSpan
Shanghai, CN12021
Chengdu, CN12014