P

Inventor

CARMEIN DAVID E E

US9 patents
⚠️ This page may combine multiple inventors who share the name “CARMEIN DAVID E E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

(unassigned)

4 patents
US6152854ANov 28, 2000

Omni-directional treadmill

324 citations98
US5980256ANov 9, 1999

Virtual reality system with enhanced sensory apparatus

687 citations98
US5562572AOct 8, 1996

Omni-directional treadmill

242 citations97
US5490784AFeb 13, 1996

Virtual reality system with enhanced sensory apparatus

242 citations97

RECOVERY ENG INC

3 patents
US5106500AApr 21, 1992

Portable water purification system including a filter cleaning mechanism

RECOVERY ENG INC97 citations95
US4793153ADec 27, 1988

Energy recovery apparatus

RECOVERY ENG INC35 citations92
US4902207AFeb 20, 1990

Energy recovery apparatus

RECOVERY ENG INC18 citations73

CARMEIN DAVID E E

1 patent
US7780573B1Aug 24, 2010

Omni-directional treadmill with applications

CARMEIN DAVID E E155 citations96

SOLIDICA INC

1 patent
US6463349B2Oct 8, 2002

Ultrasonic object consolidation system and method

SOLIDICA INC74 citations95