Inventor · Yardley, PA, US

David Allen

38Patents
14h-index
14Co-inventors
78Inventor score

Filing activity: May 8, 1979 → Sep 7, 2017

Most-cited inventions

PatentTitleAreaCited byStatus
US7066628B2 Jacketed LED assemblies and light strings containing same Emerging Cross-Sectional Technologies 116 Expired
US6953260B1 Convertible flashlight-headlamp Mechanical Engineering; Lighting; Heating 78 Expired
USD375372S Pocket flashlight General 77 Expired
USD457670S1 X-light personal flashlight General 65 Expired
US7015654B1 Light emitting diode driver circuit and method Electricity 61 Expired
US7344275B2 LED assemblies and light strings containing same Emerging Cross-Sectional Technologies 56 Expired
US7220022B2 Jacketed LED assemblies and light strings containing same Emerging Cross-Sectional Technologies 47 Expired
US7250730B1 Unique lighting string rectification Emerging Cross-Sectional Technologies 31 Expired
US7276858B2 Decorative lighting string with stacked rectification Emerging Cross-Sectional Technologies 30 Expired
US7377802B2 Plug and cord connector set with integrated circuitry Electricity 21 Expired
US7679292B2 LED lights with matched AC voltage using rectified circuitry Mechanical Engineering; Lighting; Heating 20 Active
US4584616A Format for storing data on magnetic media Physics 19 Expired
US7649323B1 Rechargeable light-emitting diode driver circuit Emerging Cross-Sectional Technologies 18 Active
USD593238S1 Rex LED flashlight General 17 Expired
US4849834A Read channel architecture for processing read head signals Physics 14 Expired
US7265496B2 Junction circuit for LED lighting chain Electricity 12 Expired
US7199764B2 Maintenance platform for a rolling radar array Physics 11 Expired
US8783267B2 Hair trimming guide Human Necessities 10 Active
US4245264A Apparatus and method for digitally synchronizing the timing of a sequence of electrical output pulses in accordance with a selectable, permissably non-linear function of the timing of a sequence of electrical input pulses Physics 10 Expired
US7540644B1 LCD optic shutter Physics 9 Active
US4253022A Infrared detector array assembly with attached optical microphonics filter Physics 8 Expired
US6914051B1 Penetrating antibiotic gel for soft tissue diseases Human Necessities 8 Expired
US4991440A Method of ultrasonically measuring thickness and characteristics of zirconium liner coextruded with zirconium tube Physics 8 Expired
USD503702S1 Loudspeaker General 8 Expired
USD503397S1 Loud speaker cabinet General 7 Expired

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