Inventor · Wittlich, DE

Friedhelm Schmitz

25Patents
11h-index
10Co-inventors
72Inventor score

Filing activity: Dec 1, 1981 → Oct 20, 2009

Most-cited inventions

PatentTitleAreaCited byStatus
US5154885A Highly corrosion and/or oxidation-resistant protective coating containing rhenium Emerging Cross-Sectional Technologies 36 Expired
US5401307A High temperature-resistant corrosion protection coating on a component, in particular a gas turbine component Emerging Cross-Sectional Technologies 27 Expired
US5273712A Highly corrosion and/or oxidation-resistant protective coating containing rhenium Chemistry; Metallurgy 24 Expired
US5499905A Metallic component of a gas turbine installation having protective coatings Emerging Cross-Sectional Technologies 23 Expired
US7798804B2 Split mold insert for a molding system Emerging Cross-Sectional Technologies 21 Active
US5582635A High temperature-resistant corrosion protection coating for a component in particular a gas turbine component Emerging Cross-Sectional Technologies 21 Expired
US5268238A Highly corrosion and/or oxidation-resistant protective coating containing rhenium applied to gas turbine component surface and method thereof Emerging Cross-Sectional Technologies 19 Expired
US4975128A Method for heat-treating straight bead welded pipes Chemistry; Metallurgy 15 Expired
US4468609A Control system for the detection of leaks in insulated pipes Physics 13 Expired
US5599385A High temperature-resistant corrosion protection coating for a component, in particular a gas turbine component Emerging Cross-Sectional Technologies 12 Expired
US5547769A Method and coating for protecting against corrosive and erosive attacks Emerging Cross-Sectional Technologies 12 Expired
US7575429B2 Compensating mold stack for use in a molding system Performing Operations; Transporting 11 Active
US6755613B1 Component and method for producing a protective coating on a component Mechanical Engineering; Lighting; Heating 5 Expired
US7758968B2 Component with thermal barrier coating and erosion-resistant layer Emerging Cross-Sectional Technologies 5 Active
US8047775B2 Layer system for a component comprising a thermal barrier coating and metallic erosion-resistant layer, production process and method for operating a steam turbine Emerging Cross-Sectional Technologies 5 Active
US7614849B2 Use of a thermal barrier coating for a housing of a steam turbine, and a steam turbine Mechanical Engineering; Lighting; Heating 4 Expired
US7597551B2 Compensating retaining member for use with a molding system Performing Operations; Transporting 3 Active
US7588439B2 Compensating core for use with a molding system Performing Operations; Transporting 3 Active
US8226362B2 Use of a thermal barrier coating for a housing of a steam turbine, and a steam turbine Mechanical Engineering; Lighting; Heating 3 Active
US8163401B2 Component having a coating system Emerging Cross-Sectional Technologies 1 Active
US7867624B2 Component having a coating system Emerging Cross-Sectional Technologies 1 Active
US7640969B2 Heat exchanger tube, heat exchanger and use Mechanical Engineering; Lighting; Heating 1 Expired
US8240364B2 Heat exchanger tube, heat exchanger and use Mechanical Engineering; Lighting; Heating 1 Active
US8137063B2 Component of a steam turbine plant, steam turbine plant, application, and production method Emerging Cross-Sectional Technologies 0 Active
US8215903B2 Use of a thermal barrier coating for a housing of a steam turbine, and a steam turbine Mechanical Engineering; Lighting; Heating 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.