Inventor

DEFU LIU

Inventor

Overview

13→

Patents

2022–2026

Patent span

LOC

Primary field

Patents· 13 as inventor

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

LOC03primary

LOC0325%

A45BWalking sticks15%

LOC1510%

B29BPreparation or pretreatment of the material to be shaped5%

B29CShaping or joining of plastics5%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts5%

B60LPropulsion of electrically-propelled vehicles5%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges5%

G09GArrangements or circuits for control of indicating devices using static means to present variable information5%

PatentTitleYear

D1111398Umbrella handle2026 D1111765Locking device2026 12,538,966Sun umbrella locking device2026 D1085691Sunshade umbrella pole2025 D1061007Umbrella skeleton2025 D1061008Sunshade armrest shell2025 12,039,915Display drive circuit and method, LED display board and display device2024 D0989146Robot2023 11,643,498Thermoplastic silicone-polyurethane elastomer and method for preparing the same2023 11,412,821Straight-pole sun umbrella hand-cranking structure2022 D0954120Robot2022 11,317,688Straight-pole sun umbrella hand-cranking device2022 11,214,162Charging module and robot having the same2022

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2022–2026Patents assigned to LINHAI GUOKANG LEISURE PRODUCTS CO LTD (8)· patent assignee history

2022–2023Patents assigned to UBTECH ROBOTICS CORP LTD (3)· patent assignee history

2022–2026Based in CN· patent location history

2023Patents assigned to MIRACLL CHEMICALS CO LTD (1)· patent assignee history

2024Patents assigned to XIAN TIBORS ELECTRONIC TECH CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LINHAI GUOKANG LEISURE PRODUCTS CO LTD	8	2022–2026
UBTECH ROBOTICS CORP LTD	3	2022–2023
MIRACLL CHEMICALS CO LTD	1	2023
XIAN TIBORS ELECTRONIC TECH CO LTD	1	2024

Locations

Location	Patents	Span
CN	13	2022–2026