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Inventor

KEFENG YANG

Inventor
CN

Overview

4→
Patents
2022–2025
Patent span
LOC
Primary field

Patents· 4 as inventor

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

LOC13primary
LOC1360%
C09KMaterials for miscellaneous applications, not provided for elsewhere20%
E21BEarth or rock drilling20%
PatentTitleYear
12,319,871Application of naphthenic imidazoline in inhibiting formation of natural gas hydrates and composition containing same2025D0991884Uninterruptible power supply2023D0986829Uninterruptible power supply2023D0942398Uninterruptible power supply2022

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2022–2023Patents assigned to EATON INTELLIGENT POWER LTD (3)· patent assignee history
2022–2025Based in CN· patent location history
2023Patents assigned to EATON INTELLECTUAL POWER LTD (1)· patent assignee history
2025Patents assigned to CHINA PETROLEUM & CHEM CORP (1)· patent assignee history
2025Patents assigned to SINOPEC EXPLORATION & PROD RES INST (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EATON INTELLIGENT POWER LTD32022–2023
CHINA PETROLEUM & CHEM CORP12025
EATON INTELLECTUAL POWER LTD12023
SINOPEC EXPLORATION & PROD RES INST12025
Locations
LocationPatentsSpan
CN42022–2025