Daqing Dannuo Petroleum Technology Development Co., Ltd.

City:

Daqing, Heilongjiang

Country:

China

Published Applications:

Last publication date:

2018-06-14

Patent Grants:

Last grant date:

2019-03-19

Top Inventors for applications by Daqing Dannuo Petroleum Technology Development Co., Ltd.

These are the the leading inventors for applications assigned to Daqing Dannuo Petroleum Technology Development Co., Ltd.:

Zhishen Su 2 Heilongjiang, China
Zhishen Su 2 Daqing, China

Recent patent applications by Daqing Dannuo Petroleum Technology Development Co., Ltd.

Daqing Dannuo Petroleum Technology Development Co., Ltd. based in Daqing, Heilongjiang, CN has been assigned the rights to these inventions. The list includes both Pending Applications and Patent Grants:

#1 | 2018-06-14 ✅ Patent 10,233,985 granted on 2019-03-19

US20180163798A1

Mechanical engineering

Hand brake system used on pumping unit without walking beam

#2 | 2018-06-14 ✅ Patent 10,378,531 granted on 2019-08-13

US20180163714A1

Mechanical engineering

Non-beam pumping unit driven by a motor reduction unit

AssigneeID:

552152 ⎘