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DP MASTER MFG CO LTD

Overview
  • Total Patents
    27
  • GoodIP Patent Rank
    92,006
  • Filing trend
    ⇩ 100.0%
About

DP MASTER MFG CO LTD has a total of 27 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets machine tools, civil engineering and measurement are ENVENTURE GLOBAL TECH INC, E2 TECH LTD and ENGTECH SA.

Patent filings in countries

World map showing DP MASTER MFG CO LTDs patent filings in countries
# Country Total Patents
#1 China 27

Patent filings per year

Chart showing DP MASTER MFG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zheng Yinliang 24
#2 Zheng Weiliang 13
#3 Fuqing Liu 3
#4 Yinliang Zheng 3
#5 Xiaoyi Han 3
#6 Tianpu Xiao 2
#7 Tianfu Xiao 1

Latest patents

Publication Filing date Title
CN108035683A Sulfur resistive heavy weight drill pipe
CN108049823A High antitorque, anti-rock drilling rod
CN108019156A The high-strength drill pipe of laced belt muff
CN107747476A Anti-shake drilling rod with antifriction band
CN107939303A High strength safe type drilling rod
CN104289601A Flanging shaping device for drill pipe protective casing
CN104228096A Production line of flanging type protective sleeve of drill rod
CN104226763A Drill pipe protective sleeve external flanging pressing device
CN104228095A Plate bending device for drill pipe protective jacket
CN104325242A Welding device after round coiling of drill rod protection sleeve
CN104226764A Drill pipe protective sleeve internal flanging pressing device
CN104228076A Production line of flanging type drill rod protective sleeve
CN104259863A Inner flanging type drill rod protective jacket production line
CN104249114A Internal flanging production line for internal flanging type drill rod protection sleeve
CN104226748A Drill pipe protective sleeve plate circularizing device
CN104308553A Board-to-round-tube production line for drill rod protection sleeve
CN104259254A Inner flanging and shaping device of drill rod protection cover
CN104289588A Plate punching device for drill pipe protective casing
CN104234642A Reinforced type drill rod inner-thread protection sleeve
CN104226520A Magnetic powder inspection sprinkling device