Inventor · Krefeld, DE

Wilhelm Schulz

7Patents
4h-index
16Co-inventors
54Inventor score

Filing activity: Feb 24, 1977 → Oct 13, 2015

Most-cited inventions

PatentTitleAreaCited byStatus
USD679107S1 Office chair General 78 Active
US4121858A Flanged pipe joints Emerging Cross-Sectional Technologies 23 Expired
US4484771A Flange for connecting pipes Emerging Cross-Sectional Technologies 20 Expired
USD693139S1 Office chair General 16 Active
US4441365A Sight-glass mounting Mechanical Engineering; Lighting; Heating 4 Expired
US4521039A Connector for heated pipes Mechanical Engineering; Lighting; Heating 1 Expired
US10206508B2 Chair, in particular office chair Human Necessities 1 Active

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