Inventor · Chelsea, MI, US

John M. Check

13Patents
8h-index
12Co-inventors
69Inventor score

Filing activity: Feb 27, 1976 → Mar 16, 2000

Most-cited inventions

PatentTitleAreaCited byStatus
US4814573A Electrical discharge machining apparatus with exchangeable electrode refeed cartridge Emerging Cross-Sectional Technologies 30 Expired
US5940895A Heated toilet seat Emerging Cross-Sectional Technologies 30 Expired
US5498150A High thermal capacity mold assembly Performing Operations; Transporting 27 Expired
US4739145A System for positioning and transferring EDM electrodes Emerging Cross-Sectional Technologies 15 Expired
US4639568A Apparatus and method for finishing fuel injector spray tips using EDM Emerging Cross-Sectional Technologies 13 Expired
US4703142A Method of combining grinding and EDM operation for finishing fuel injector nozzle bodies Performing Operations; Transporting 10 Expired
US4191878A Electrode positioning gage for multiple electrode electrical discharge machining apparatus Performing Operations; Transporting 8 Expired
US4721839A Combined bore seat face grinding, EDM and lapping method for finishing fuel injector nozzle bodies Performing Operations; Transporting 8 Expired
US6425752B1 Bubbler tube with integral inlet pipe and bimetal core for injection molding tools and method of making the bubbler tube Emerging Cross-Sectional Technologies 7 Expired
US4044216A Multiple electrode electrical discharge machining Performing Operations; Transporting 7 Expired
US4782203A Wire guide for electric discharge machine Performing Operations; Transporting 6 Expired
US4195448A Two-point contact steady rest follower Performing Operations; Transporting 4 Expired
US4644125A D.C. motor driven EDM head Performing Operations; Transporting 1 Expired

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