Inventor

Qi Zhang

Inventor

Beijing, CN

Overview

2→

Patents

2017–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 2 as inventor

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

B05Bprimary

B05BSpraying apparatus25%

B65BMachines, apparatus or devices for, or methods of, packaging articles or materials25%

B67CCleaning, filling with liquids or semiliquids, or emptying, of bottles, jars, cans, casks, barrels, or similar containers, not otherwise provided for25%

E21BEarth or rock drilling25%

PatentTitleYear

11,091,359Unitary dispensing nozzle for co-injection of two or more liquids and method of using same2021 9,850,744Method for extracting coalbed gas through water and coal dust drainage and a device thereof2017

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2017Patents assigned to SHENGLI LONGDI PETROLEUM TECH & EQUIPMENT CO LTD (1)· patent assignee history

2017Patents assigned to SHENGLI LONGDI PETROLEUM TECH & EQUPIMENT CO LTD (1)· patent assignee history

2017Based in Binzhou, CN· patent location history

2021Patents assigned to PROCTER & GAMBLE (1)· patent assignee history

2021Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PROCTER & GAMBLE	1	2021
SHENGLI LONGDI PETROLEUM TECH & EQUIPMENT CO LTD	1	2017
SHENGLI LONGDI PETROLEUM TECH & EQUPIMENT CO LTD	1	2017

Locations

Location	Patents	Span
Beijing, CN	1	2021
Binzhou, CN	1	2017