Inventor

Lifeng MA

Inventor
CN

Overview

9→
Patents
2022–2025
Patent span
Performing operations
Primary field (CPC B)

Patents· 9 as inventor

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

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material14%
B21BRolling of metal10%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling10%
B08BCleaning in general5%
B21HMaking particular metal objects by rolling, e.g. screws, wheels, rings, barrels, balls5%
B22DCasting of metals5%
B62DMotor vehicles5%
B65BMachines, apparatus or devices for, or methods of, packaging articles or materials5%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables5%
E01BPermanent way5%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2022–2025Patents assigned to UNIV TAIYUAN SCIENCE & TECH (6)· patent assignee history
2022–2025Based in CN· patent location history
2023Patents assigned to HIGH END EQUIPMENT AND RAIL TRANSIT TECHNOLOGY R & D CENTER OF HAIAN TAIYUAN UNIV OF SCIENCE AND TEC (1)· patent assignee history
2023Patents assigned to HIGH END EQUIPMENT AND RAIL TRANSIT TECHNOLOGY R & D CENTER OF HARAN TAIYUAN UNIV OF SCIENCE AND TEC (1)· patent assignee history
2025Patents assigned to CHINA RAILWAY FIRST GROUP CO (1)· patent assignee history
2025Patents assigned to CHINA RAILWAY FIRST GROUP XINYUN ENG CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV TAIYUAN SCIENCE & TECH62022–2025
CHINA RAILWAY FIRST GROUP CO12025
CHINA RAILWAY FIRST GROUP XINYUN ENG CO LTD12025
HIGH END EQUIPMENT AND RAIL TRANSIT TECHNOLOGY R & D CENTER OF HAIAN TAIYUAN UNIV OF SCIENCE AND TEC12023
HIGH END EQUIPMENT AND RAIL TRANSIT TECHNOLOGY R & D CENTER OF HARAN TAIYUAN UNIV OF SCIENCE AND TEC12023
Locations
LocationPatentsSpan
CN92022–2025