Learn more

HUNAN VICTOR PETROTECH SERVICE CO LTD

Overview
  • Total Patents
    11
  • GoodIP Patent Rank
    172,372
  • Filing trend
    ⇧ 200.0%
About

HUNAN VICTOR PETROTECH SERVICE CO LTD has a total of 11 patent applications. It increased the IP activity by 200.0%. Its first patent ever was published in 2012. It filed its patents most often in China. Its main competitors in its focus markets civil engineering and measurement are EVENTURE GLOBAL TECHNOLOGY, BENTHIC GEOTECH PTY LTD and OURO NEGRO TECNOLOGIAS EM EQUIPAMENTOS IND S/A.

Patent filings in countries

World map showing HUNAN VICTOR PETROTECH SERVICE CO LTDs patent filings in countries
# Country Total Patents
#1 China 11

Patent filings per year

Chart showing HUNAN VICTOR PETROTECH SERVICE CO LTDs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Shi Yu 3
#2 Zhao Shicheng 3
#3 Xiao Yuanhong 3
#4 Zhong Lu 3
#5 Shi Bowen 3

Latest patents

Publication Filing date Title
CN109322639A A kind of oil/gas well screen casing shearing ball seat
CN108756815A A kind of hydraulic control sliding sleeve
CN108716996A A kind of down-hole liquid sampling instrument
CN107130936A A kind of multichannel Oil/gas Well production packer
CN105114021A Hanging sealer for installing velocity string in oil pipe and feeding and recovering tool of hanging sealer
CN104499994A Annular hydraulic control safety valve
CN103967467A Counting device and multistage all-diameter ball injection sliding sleeve device
CN103967468A Counting device and multi-stage full-drift-diameter injection ball sliding sleeve device
CN103982167A Staged fracturing apparatus with full-bore ball throwing sliding sleeve
CN102733786A Sliding sleeve for mining oil-gas well in layering manner
CN102720464A Subsurface safety valve