LexDanaLexDanabeta
Inventor

Wenfang Ran

Inventor
Xi'an, CN

Overview

3→
Patents
2019–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H04Nprimary
H04NPictorial communication, e.g. television50%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems25%
H05BElectric heating25%
PatentTitleYear
11,006,490Electronic ballast interface circuit202110,645,387Predictive quantization coding method and video compression system202010,491,927Quadtree-based bandwidth compression prediction method and system thereof2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019–2020Patents assigned to XIAN CREATION KEJI CO LTD (2)· patent assignee history
2019–2020Based in Xi'an, CN· patent location history
2021Patents assigned to SIGNIFY HOLDING BV (1)· patent assignee history
2021Based in Eindhoven, NL· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
XIAN CREATION KEJI CO LTD22019–2020
SIGNIFY HOLDING BV12021
Locations
LocationPatentsSpan
Xi'an, CN22019–2020
Eindhoven, NL12021