Inventor · Stanton, CA

Perry Smith

22Patents
6h-index
31Co-inventors
69Inventor score

Filing activity: Jan 20, 1995 → Mar 30, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5666412A Secure access systems and methods utilizing two access cards Electricity 153 Expired
US6298441A Secure document access system Electricity 135 Expired
US5774546A Secure access system utilizing an access card having more than one embedded integrated circuit and/or plurality of security levels Electricity 104 Expired
US5878134A Secure access systems utilizing more than one IC card Electricity 103 Expired
US5774652A Restricted access computer system Physics 38 Expired
US6443660B1 Method and system for manipulating an object located underwater Performing Operations; Transporting 11 Expired
USD971149S1 Bladeless turbine impeller General 6 Active
USD918142S1 Bladeless turbine impeller General 3 Active
US7350835B1 Gate locking assembly Emerging Cross-Sectional Technologies 3 Active
US8254762B2 Management of dynamic program changes in DVB systems Electricity 2 Active
US8751821B2 Secure read-write storage device Physics 1 Active
US8355506B2 Digital video recorder anti-skip system Electricity 1 Active
US11063829B2 Secure collaborative data communications network Electricity 1 Active
US7540008B2 Secure clock Physics 1 Expired
US11105343B2 Fluid-foil impeller and method of use Emerging Cross-Sectional Technologies 0 Active
US9735956B2 Key ladder apparatus and method Electricity 0 Active
US9762687B2 Continuity of content Electricity 0 Active
US8791788B2 Electronic book security features Electricity 0 Active
US8417963B2 Secure read-write storage device Electricity 0 Active
US8243252B2 Movie copy protection Electricity 0 Active
US7810112B2 Secure time element Physics 0 Active
US7907248B2 Movie copy protection Electricity 0 Active

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