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Inventor

Rentai Liu

Inventor
Jinan, CN

Overview

2→
Patents
2021
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E02Dprimary
E02DFoundations25%
E21BEarth or rock drilling25%
G10LSpeech analysis techniques or speech synthesis25%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers25%
PatentTitleYear
11,085,244Anti-collapse jet grouting drill bit with bi-directional rib wings, grouting consolidation system and method202110,902,853Electronic device and voice command identification method thereof2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021Patents assigned to UNIV SHANDONG (1)· patent assignee history
2021Patents assigned to WISTRON CORP (1)· patent assignee history
2021Based in Jinan, CN· patent location history
2021Based in New Taipei, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV SHANDONG12021
WISTRON CORP12021
Locations
LocationPatentsSpan
Jinan, CN12021
New Taipei, TW12021