How many patents does
Dolc have?

patents
1,564
families
1,339
granted
230
applications
1,334
CN
1,547
US
5
EP
4
WO
2
RoW
6

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The report contains ten-year analysis with the following sections

  • patent filing analysis
  • worldwide filing analysis
  • patent family analysis
  • application analysis
  • granted analysis
  • classification analysis
  • citation analysis

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Dolc
Top ten assignees appearing on patents

Dolc
The top ten patent families are

Title of patent family
(most common patent title)
Family
members
Filing
year
crown-shaped separation device for separating oil and water in well 10 2011
multiphase shock excitation sand remover and sand removing method of sand-containing flu… 🛈 9 2012
a corrugated settling cup and a multi-cup uniform flux gas anchor 7 2007
multi-phase cyclone desander and multi-phase cyclone desanding method 3 2013
single crank double stroke flexible rope beam-pumping unit 3 2005
quantitative test method for residual polymer in polymer flooding reservoir rocks 3 2010
multi-barrel cyclone desander and multi-barrel cyclone desanding method 3 2013
double-stroke flexible crank connecting device of pumping unit 2 2009
temperature difference type single well metering device 2 2009
industrial product of hexadecyl xylol sulfonate and production method thereof, surfactan… 🛈 2 2013