How many patents does
Dorf Ketal Chemicals have?
patents
492
families
30
granted
137
applications
355
US
44
CN
41
WO
38
KR
38
EP
38
JP
26
RoW
267
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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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Dorf Ketal Chemicals
Top ten assignees appearing on patents
Dorf Ketal Chemicals
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| amine based additive composition for control and inhibition of polymerization of styrene… 🛈 | 29 | 2011 |
| additive and method for removal of calcium from crude oils containing calcium naphthenate | 29 | 2011 |
| amine and nitroxide based additive composition for control and inhibition of polymerizat… 🛈 | 28 | 2011 |
| improved amine based additive composition for control and inhibition of polymerization o… 🛈 | 27 | 2011 |
| method of removing metals from hydrocarbon feedstock using esters of carboxylic acids | 26 | 2008 |
| improved additives composition for control and inhibition of polymerization of aromatic … 🛈 | 26 | 2011 |
| additive composition for control and inhibition of polymerization of styrene, and method… 🛈 | 26 | 2011 |
| additive composition and method for scavenging hydrogen sulfide in hydrocarbon streams | 25 | 2010 |
| method of scavenging hydrogen sulfide from hydrocarbon stream | 25 | 2009 |
| a new additive for inhibiting acid corrosion and method of using the new additive | 23 | 2008 |