Inventor · Portland, OR, US

Mark Chapman

16Patents
7h-index
17Co-inventors
63Inventor score

Filing activity: Oct 25, 1988 → Mar 21, 2017

Most-cited inventions

PatentTitleAreaCited byStatus
US5259120A Calibration and measurement device Physics 110 Expired
US6837390B2 Hot-fillable, blow molded container Performing Operations; Transporting 57 Expired
US6473250B1 Beam deflector Physics 28 Expired
US5983433A Foot cleaning device Human Necessities 18 Expired
US5007006A Method of and apparatus for calibration of machines Physics 16 Expired
USD450588S Shoulder of a container General 14 Expired
USD453685S1 Container shoulder General 11 Expired
USD814286S1 Yoke collar General 6 Active
US6597505B1 Apparatus for producing and guiding a light beam Physics 4 Expired
US7315380B2 Laser interferometer for repeatable mounting on the wall of a vacuum chamber Physics 4 Expired
US6934641B2 Motion detection and analysis Physics 3 Expired
US7023550B2 Aligning optical components of an optical measuring system Physics 2 Expired
US8368887B2 Rotation detection kit Physics 2 Active
US7304815B2 Laser system Physics 1 Expired
US5638177A Laser interferometer for measuring object displacement over large distances Physics 1 Expired
US5720209A Mounting device for a telescopic transducer Emerging Cross-Sectional Technologies 1 Expired

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