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David Cook, Raymond Odell, Ian T Petherbridge, Pierre Legare, Robert P Lapointe, Kenneth J Krepel, David M Blomberg, Derek S Baker, James R Betz, Thomas I Insley: Apparatus and method for breathing apparatus component coupling. 3M Innovative Properties Company, Karl G Hanson, James L Young, June 10, 2003: US06575165 (76 worldwide citation)

The present invention relates to a fan-forced positive pressure breathing apparatus commonly known as a Powered Air Purifying Respirators (PAPR) system, and specifically concerns the connecting of the breathing components of such equipment. The invention is a method and apparatus for rapid engagemen ...


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Kenneth J Krepel, Joseph A Hoffman, Anthony B Ferguson, Daniel J Severson, Keith K McLaughlin, Walter S Federation, Wayne M Wirth, Owen L Nelson, John E Potts, James E Steffen: Cassette for use in an electronic radiographic imaging system. Imation, William K Weimer, June 30, 1998: US05773839 (24 worldwide citation)

A cassette for use in an electronic radiographic imaging system having electronic components. The cassette includes a positioned photoreceptive medium, a light-tight frame, at least one power storage device, and an electronic interface structure for connection to electronic components within the rad ...


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James E Steffen, Jay A Esch, Robert J Mattila, Eric J Donaldson, Timothy S Vraa, Owen L Nelson, John E Potts, Jathan D Edwards, Kenneth J Krepel, Joseph A Hoffman: Radiographic image reader. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, William K Weimer, August 8, 1995: US05440146 (18 worldwide citation)

A radiographic image reader acquires electronic signals corresponding to a latent image of an object produced by radiation exposure of a photoreceptive medium within a cassette. The radiographic image reader comprises a light-tight enclosure with at least one access port for inserting and removing t ...


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Kenneth J Krepel, Brian S McGinley, Neal A Rakow, Paul A Sevcik, Cristina U Thomas: Determining compatibility of components for assembling approved personal protection configurations. 3M INNOVATIVE PROPERTIES COMPANY, February 6, 2018: US09886608

This disclosure relates generally to methods and systems for determining whether at least a first component and a second component of a personal protection (PP) configuration are compatible so as to be assembled into an approved PP configuration, responsive to being compared against at least one pre ...


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Jia Hu, Kenneth J Krepel, John M Pilgrim: Respirator waist belt. 3M Innovative Properties Company, Eric D Levinson, September 1, 2015: US09119975

A wearable belt for supporting a respiratory component is disclosed. The belt includes a first end portion, a second end portion, and an interface portion that includes an inner layer, an outer layer, and a rigid attachment element in contact with the inner layer and the outer layer. The rigid attac ...


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Kenneth J Krepel, Brian S McGinley, Neal A Rakow, Paul A Sevcik, Cristina U Thomas: Determining compatibility of components for assembling approved personal protection configurations. 3M Innovative Properties Company, 3m Innovative Properties Company, March 5, 2009: US20090058600-A1

This disclosure relates generally to methods and systems for determining whether at least a first component and a second component of a personal protection (PP) configuration are compatible so as to be assembled into an approved PP configuration, responsive to being compared against at least one pre ...